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It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Dicker Willem (Dicker Wilhelm; Garubberg), ǃNamiǂNûs Constituency, ǁKaras Region, Namibiai
Regional Level Types
Dicker Willem (Dicker Wilhelm; Garubberg)Intrusion
ǃNamiǂNûs ConstituencyConstituency
ǁKaras RegionRegion
NamibiaCountry

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Latitude & Longitude (WGS84):
26° 28' South , 16° 1' East
Latitude & Longitude (decimal):
-26.46667,16.01667
GRN:
S18E11
Type:
Intrusion
Köppen climate type:
BWk : Cold desert climate
Mindat Locality ID:
56495
Long-form identifier:
mindat:1:2:56495:4
GUID (UUID V4):
0
Other/historical names associated with this locality:
Dicker Willem Complex


Carbonatite intrusion in SW portion of country.

A 3 km diameter "Inselberg" known as Dicker Wilhelm (also spelt Willem), also known as Garubberg. A mountain rising 600 m in the Namib Desert west of Aus.

Approx circular carbonatite intrusion is emplaced in gneisses of the Namaqualand Metamorphic Complex. There are 2 carbonatite centres both of which have steeply dipping concentric structures defined by flow banding, as well as cone sheets and dikes in the basement gneisses.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


19 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Alkali pyroxene'
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Andradite var. Melanite
Formula: Ca3Fe3+2(SiO4)3
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Baryte
Formula: BaSO4
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Calcite
Formula: CaCO3
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Cancrinite
Formula: (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ⓘ Dolomite
Formula: CaMg(CO3)2
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Feldspar Group'
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Fluorite
Formula: CaF2
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Goethite
Formula: Fe3+O(OH)
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'K Feldspar'
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Mica Group'
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Reid, D. L., & Cooper, A. F. (1998, April). Carbonatite and silicate magmas at Dicker Willem, southern Namibia: their origin and source region characteristics. In International Kimberlite Conference: Extended Abstracts (Vol. 7, No. 1, pp. 727-729).
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Quartz
Formula: SiO2
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Sanidine
Formula: K(AlSi3O8)
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ 'Sodic amphibole'
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Tainiolite
Formula: KLiMg2(Si4O10)F2
ⓘ Tetraferriphlogopite
Formula: KMg3(Fe3+Si3O10)(OH,F)2
References:
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Titanite
Formula: CaTi(SiO4)O
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Wollastonite
Formula: Ca3(Si3O9)
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
ⓘ Zircon
Formula: Zr(SiO4)
References:
Jour Pet 39:2123-2136.
Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Woldegabriel, Giday, Aronson, James L., Walter, Robert C. (1990) Geology, geochronology, and rift basin development in the central sector of the Main Ethiopia Rift. Geological Society of America Bulletin, 102 (4) 439-458 doi:10.1130/0016-7606(1990)102<0439:ggarbd>2.3.co;2
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘ'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 9 - Silicates
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘvar. Melanite9.AD.25Ca3Fe3+2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘAegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘTainiolite9.EC.15KLiMg2(Si4O10)F2
ⓘTetraferriphlogopite9.EC.20KMg3(Fe3+Si3O10)(OH,F)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘCancrinite9.FB.05(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Feldspar Group'-
ⓘ'Mica Group'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Sodic amphibole'-
ⓘ'Alkali pyroxene'-

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Hⓘ GoethiteFe3+O(OH)
Hⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Hⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
LiLithium
Liⓘ TainioliteKLiMg2(Si4O10)F2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BaryteBaSO4
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Oⓘ DolomiteCaMg(CO3)2
Oⓘ GoethiteFe3+O(OH)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
Oⓘ QuartzSiO2
Oⓘ SanidineK(AlSi3O8)
Oⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ ZirconZr(SiO4)
Oⓘ TainioliteKLiMg2(Si4O10)F2
Oⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ FluoriteCaF2
Fⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Fⓘ TainioliteKLiMg2(Si4O10)F2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Mgⓘ TainioliteKLiMg2(Si4O10)F2
AlAluminium
Alⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ SanidineK(AlSi3O8)
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ QuartzSiO2
Siⓘ SanidineK(AlSi3O8)
Siⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ ZirconZr(SiO4)
Siⓘ TainioliteKLiMg2(Si4O10)F2
Siⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ BaryteBaSO4
Sⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ SanidineK(AlSi3O8)
Kⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Kⓘ TainioliteKLiMg2(Si4O10)F2
CaCalcium
Caⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ Cancrinite(Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Caⓘ DolomiteCaMg(CO3)2
Caⓘ FluoriteCaF2
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ GoethiteFe3+O(OH)
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
Feⓘ Andradite var. MelaniteCa3Fe23+(SiO4)3
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Pyrochlore GroupA2Nb2(O,OH)6Z
BaBarium
Baⓘ BaryteBaSO4
TaTantalum
Taⓘ Microlite GroupA2-mTa2X6-wZ-n

Geochronology

Mineralization age: Eocene : 49.8 ± 0.8 Ma to 48 ± 2 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Eocene
ⓘ Biotite (youngest age)48 ± 2 Ma
ⓘ Biotite (oldest age)49.8 ± 0.8 Ma

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
Namibia

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Jackson, M.P.A. 1976. High-grade metamorphism and migmatization of the Namaqua metamorphic complex around Aus in the southern Namib Desert, South West Africa. Bulletin, University of Cape Town, Department of Geology, Chamber of Mines Precambrian Research Unit, 18.
Communications of the Geological Survey South West Africa/Namibia, 4, 3-13.
Cooper, A. F. (1988). Geology of Dicker Willem, a subvolcanic carbonatite complex in South-West Africa.
Reid, D. L., Cooper, A. F., Rex, D. C., Harmer, R. E. (1990) Timing of post–Karoo alkaline volcanism in southern Namibia. Geological Magazine, 127 (5) 427-433 doi:10.1017/s001675680001517x
Cooper, A. F., Reid, D. L. (1991) Textural evidence for calcite carbonatite magmas, Dicker Willem, southwest Namibia. Geology, 19 (12). 1193-1196 doi:10.1130/0091-7613(1991)019<1193:tefccm>2.3.co;2
Reid, David L., Cooper, Alan F. (1992) Oxygen and carbon isotope patterns in the Dicker Willem carbonatite complex, southern Namibia. Chemical Geology: Isotope Geoscience section, 94 (4). 293-305 doi:10.1016/0168-9622(92)90004-t
Cooper, A. F., Reid, D. L. (1998) Nepheline Sovites as Parental Magmas in Carbonatite Complexes: Evidence from Dicker Willem, Southwest Namibia. Journal of Petrology, 39 (11) 2123-2136 doi:10.1093/petroj/39.11-12.2123
Cooper, A. F., Reid, D. L. (2000) The association of potassic trachytes and carbonatites at the Dicker Willem Complex, southwest Namibia: coexisting, immiscible, but not cogenetic magmas. Contributions to Mineralogy and Petrology, 139 (5) 570-583 doi:10.1007/s004100000157
Woolley, A. R. (2001) Alkaline Rocks and Carbonatites of the World, Part 3: Africa - Alkaline Rocks and Carbonatites of the World. The Geological Society of London.p.215
von Bezing, Ludi (2007) Namibia - Minerals and Localities (1st ed.). Bode Verlag GmbH.
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