Whiteite-(CaFeMg)
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Whiteite-(CaFeMg)
Formula:
{Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O
Colour:
Pink-brown, light brown
Hardness:
3 - 4
Specific Gravity:
2.58
Crystal System:
Monoclinic
Member of:
Name:
Named after John Sampson White, Jr. (30 September 1933, Monessen, Pennsylvania, USA -), associate curator of minerals, Smithsonian Institution; founder, editor, and publisher (1970-1982) of the Mineralogical Record. It was named at the same time as whiteite-(MnFeMg), where the suffixes indicate the dominant cations in the X, M(1), and M(2) structural positions.
Type Locality:
Unique Identifiers
Mindat ID:
4277
Long-form identifier:
mindat:1:1:4277:8
Similar Names
| Wadeite | A valid IMA mineral species - grandfathered | K2Zr(Si3O9) |
| Whiteit | A synonym of 'Whiteite' | |
| Whiteite | A synonym of Whiteite Subgroup | |
| Whiteite-(CaMgMg) | A valid IMA mineral species | CaMg3Al2(PO4)4(OH)2 · 8H2O |
| Whiteite-(CaMnFe) | A valid IMA mineral species | CaMnFe2Al2(PO4)4(OH)2 · 8H2O |
| Whiteite-(CaMnMg) | A valid IMA mineral species | {Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
| Whiteite-(CaMnMn) | A valid IMA mineral species | {Ca}{Mn2+}{Mn2}{Al2}(PO4)4(OH)2 · 8H2O |
| Whiteite-(MnFeMg) | A valid IMA mineral species | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
| Whiteite-(MnMnMg) | A valid IMA mineral species | MnMnMg2Al2(PO4)4(OH)2 · 8H2O |
| Whiteite-(MnMnMn) | A valid IMA mineral species | Mn2+Mn2+Mn22+Al2(PO4)4(OH)2 · 8H2O |
| Wittite | A valid IMA mineral species - grandfathered - questionable | Pb9Bi12(S,Se)27 |
Classification of Whiteite-(CaFeMg)
IMA Classification of Whiteite-(CaFeMg)
Approved
IMA Formula:
CaFe2+Mg2Al2(PO4)4(OH)2·8H2O
Approval year:
1975
First published:
1978
Approval history:
Approved as a new species by IMA in 1975.
Type description reference:
8.DH.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1
42.11.3.1
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
19.12.60
19 : Phosphates
12 : Phosphates of Mn
19 : Phosphates
12 : Phosphates of Mn
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Wt-CaFeMg | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Whiteite-(CaFeMg)
Transparency:
Translucent
Colour:
Pink-brown, light brown
Hardness:
3 - 4 on Mohs scale
Cleavage:
Perfect
Good to perfect, {001}
Good to perfect, {001}
Density:
2.58(1) g/cm3 (Measured) 2.51 g/cm3 (Calculated)
Optical Data of Whiteite-(CaFeMg)
Type:
Biaxial (+)
RI values:
nα = 1.58 nβ = 1.585 nγ = 1.59
2V:
Measured: 40° to 50°, Calculated: 88°
Max. Birefringence:
δ = 0.010
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
none
Chemistry of Whiteite-(CaFeMg)
Mindat Formula:
{Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O
Element Weights:
Crystallography of Whiteite-(CaFeMg)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 14.87(2) Å, b = 6.95(3) Å, c = 10.13 Å
β = 112.8(3)°
β = 112.8(3)°
Ratio:
a:b:c = 2.14 : 1 : 1.458
Unit Cell V:
965.10 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Warped crystals showing the forms c{001}and n{111}.
Twinning:
Twinned by reflection on {001}, imparting a pseudo-orthorhombic appearance to the composite.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.304 Å | (100) |
| 2.789 Å | (65) |
| 4.660 Å | (30) |
| 4.849 Å | (20) |
| 2.946 Å | (20) |
| 2.542 Å | (20) |
| 1.936 Å | (20) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Whiteite-(CaFeMg)
General Appearance of Type Material:
Pale tan to brown bunched aggregates of small (1-5 mm) tabular crystals to large (up to 2 cm) thick tabular canoe-shaped individuals.
Place of Conservation of Type Material:
National School of Mines, Paris, France.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 123013.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 123013.
Geological Setting of Type Material:
Granite pegmatite
Associated Minerals at Type Locality:
Synonyms of Whiteite-(CaFeMg)
Other Language Names for Whiteite-(CaFeMg)
Dutch:Whiteiet-(CaFeMg)
German:Whiteit-(CaFeMg)
Relationship of Whiteite-(CaFeMg) to other Species
Member of:
Other Members of Whiteite Subgroup:
| Rittmannite | {(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
| Whiteite-(CaMgMg) | CaMg3Al2(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
| Whiteite-(CaMnFe) | CaMnFe2Al2(PO4)4(OH)2 · 8H2O | Mon. 2/m |
| Whiteite-(CaMnMg) | {Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O | Mon. 2/m |
| Whiteite-(CaMnMn) | {Ca}{Mn2+}{Mn2}{Al2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
| Whiteite-(MnFeMg) | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O | Mon. 2/m : P21/b |
| Whiteite-(MnMnMg) | MnMnMg2Al2(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
| Whiteite-(MnMnMn) | Mn2+Mn2+Mn2+2Al2(PO4)4(OH)2 · 8H2O | Mon. 2/m : P2/b |
Common Associates
Associations Based on Photo Data:
| 84 photos of Whiteite-(CaFeMg) associated with Lazulite | MgAl2(PO4)2(OH)2 |
| 64 photos of Whiteite-(CaFeMg) associated with Quartz | SiO2 |
| 11 photos of Whiteite-(CaFeMg) associated with Siderite | FeCO3 |
| 4 photos of Whiteite-(CaFeMg) associated with Whitlockite | Ca9Mg(PO4)6(PO3OH) |
| 4 photos of Whiteite-(CaFeMg) associated with Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 |
| 3 photos of Whiteite-(CaFeMg) associated with Messelite | Ca2Fe2+(PO4)2 · 2H2O |
| 2 photos of Whiteite-(CaFeMg) associated with Gormanite | (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O |
| 2 photos of Whiteite-(CaFeMg) associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 2 photos of Whiteite-(CaFeMg) associated with Whiteite-(MnFeMg) | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
| 1 photo of Whiteite-(CaFeMg) associated with Arrojadite-(KFe) | (KNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 8.DH. | Thebaite-(NH4) | (NH4)3Al(C2O4)(PO3OH)2(H2O) |
| 8.DH. | Whiteite-(MnMnMn) | Mn2+Mn2+Mn2+2Al2(PO4)4(OH)2 · 8H2O |
| 8.DH. | Ammoniotinsleyite | (NH4)Al2(PO4)2(OH) · 2H2O |
| 8.DH. | Bergbauerite | (H2O)2Mn2(Fe2Ti)(PO4)4(OH)2(H2O)10 · 4H2O |
| 8.DH. | Dendoraite-(NH4) | (NH4)2NaAl(C2O4)(PO3OH)2(H2O)2 |
| 8.DH. | Rowleyite | [Na(NH4,K)9Cl4][V5+,4+2(P,As)O8]6 · n[H2O,Na,NH4,K,Cl] |
| 8.DH. | Hochleitnerite | Mn2Ti3(PO4)4O2(H2O)2 · 14H2O |
| 8.DH. | Whiteite-(CaMnFe) | CaMnFe2Al2(PO4)4(OH)2 · 8H2O |
| 8.DH.05 | Minyulite | KAl2(PO4)2F · 4H2O |
| 8.DH.10 | Leucophosphite | KFe3+2(PO4)2(OH) · 2H2O |
| 8.DH.10 | Tinsleyite | KAl2(PO4)2(OH) · 2H2O |
| 8.DH.10 | Spheniscidite | (NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2O |
| 8.DH.15 | Jahnsite-(CaMnFe) | {Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(NaMnMn) | {Na}{Mn2+}{(Mn2+,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(CaMnMg) | {Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(CaMnMn) | {Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Whiteite-(MnMnMg) | MnMnMg2Al2(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(CaMnZn) | {Ca}{Mn2+}{Zn2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(MnMnMg) | {Mn2+}{Mn2+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(MnMnFe) | {Mn2+}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | 'Jahnsite-(CaFeFe)' | {Ca}{Fe2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Rittmannite | {(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Keckite | CaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2O |
| 8.DH.15 | Jahnsite-(NaMnMg) | {(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | 'Jahnsite-(CaMgMg)' | {Ca}{Mg}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(MnMnZn) | {Mn2+}{Mn2+}{Zn2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Whiteite-(CaMgMg) | CaMg3Al2(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Whiteite-(CaMnMg) | {Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Whiteite-(MnFeMg) | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(MnMnMn) | {Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | 'Kaluginite' | (Mn2+,Ca)MgFe3+(PO4)2(OH) · 4H2O |
| 8.DH.15 | Jahnsite-(CaFeMg) | {Ca}{Fe2+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Whiteite-(CaMnMn) | {Ca}{Mn2+}{Mn2}{Al2}(PO4)4(OH)2 · 8H2O |
| 8.DH.15 | Jahnsite-(NaFeMg) | {Na}{Fe3+}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O |
| 8.DH.20 | Segelerite | Ca2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2O |
| 8.DH.20 | Lun'okite | (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2OH · 4H2O |
| 8.DH.20 | Manganosegelerite | (Mn2+,Ca)(Mn2+,Fe2+,Mg)Fe3+(PO4)2(OH) · 4H2O |
| 8.DH.20 | Wilhelmvierlingite | CaMnFe3+(PO4)2(OH) · 2H2O |
| 8.DH.20 | Juonniite | CaMgSc(PO4)2(OH) · 4H2O |
| 8.DH.20 | Overite | CaMgAl(PO4)2(OH) · 4H2O |
| 8.DH.25 | Calcioferrite | Ca4MgFe3+4(PO4)6(OH)4 · 12H2O |
| 8.DH.25 | Zodacite | Ca4Mn2+Fe3+4(PO4)6(OH)4 · 12H2O |
| 8.DH.25 | Fanfaniite | Ca4Mn2+Al4(PO4)6(OH)4 · 12H2O |
| 8.DH.25 | Kingsmountite | Ca3Mn2+FeAl4(PO4)6(OH)4 · 12H2O |
| 8.DH.25 | Montgomeryite | Ca4MgAl4(PO4)6(OH)4 · 12H2O |
| 8.DH.30 | Pararobertsite | Ca2Mn3+3(PO4)3O2 · 3H2O |
| 8.DH.30 | Robertsite | Ca2Mn3+3(PO4)3O2 · 3H2O |
| 8.DH.30 | Arseniosiderite | Ca2Fe3+3(AsO4)3O2 · 3H2O |
| 8.DH.30 | Sailaufite | (Ca,Na,◻)2Mn3+3(AsO4)2(CO3)O2 · 3H2O |
| 8.DH.30 | Mitridatite | Ca2Fe3+3(PO4)3O2 · 3H2O |
| 8.DH.30 | Kolfanite | Ca2Fe3+3O2(AsO4)3 · 2H2O |
| 8.DH.35 | Mantienneite | KMg2Al2Ti(PO4)4(OH)3 · 15H2O |
| 8.DH.35 | Sperlingite | (H2O)K(Mn2+Fe3+)(Al2Ti)(PO4)4[O(OH)] [(H2O)9(OH)] · 4H2O |
| 8.DH.35 | Paulkerrite | K(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2O |
| 8.DH.35 | Hydroxylbenyacarite | (H2O)2Mn2(Ti2Fe)(PO4)4[O(OH)](H2O)10 · 4H2O |
| 8.DH.35 | Macraeite | K(H2O)Mn2(Fe2Ti)(PO4)4[O(OH)](H2O)10 · 4H2O |
| 8.DH.35 | Benyacarite | (H2O)2Mn2Ti2Fe3+(PO4)4(OF)(H2O)10 · 4H2O |
| 8.DH.35 | Fluormacraeite | [(H2O)K]Mn2(Fe2Ti)(PO4)4(OF)(H2O)10 · 4H2O |
| 8.DH.40 | Xanthoxenite | Ca4Fe3+2(PO4)4(OH)2 · 3H2O |
| 8.DH.45 | Mahnertite | NaCu3(AsO4)2Cl · 5H2O |
| 8.DH.50 | Andyrobertsite | KCdCu5(AsO4)4(H2AsO4) · 2H2O |
| 8.DH.50 | Calcioandyrobertsite | KCaCu5(AsO4)4(H2AsO4) · 2H2O |
| 8.DH.55 | Englishite | K3Na2Ca10Al15(PO4)21(OH)7 · 26H2O |
| 8.DH.60 | Bouazzerite | Bi6(Mg,Co)11Fe3+14(AsO4)18(OH)4O12 · 86H2O |
| 8.DH.65 | Galliskiite | Ca4Al2(PO4)2F8 · 5H2O |
| 8.DH.70 | Joteite | Ca2CuAl(AsO4)[AsO3(OH)]2(OH)2 · 5H2O |
| 8.DH.75 | Kampelite | Ba6Mg3Sc8(PO4)12(OH)6 · 7H2O |
| 8.DH.80 | Kapundaite | NaCaFe4(PO4)4(OH)3 · 5H2O |
| 8.DH.85 | Vaniniite | Ca2Mn2+3Mn3+2O2(AsO4)4 · 2H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Whiteite-(CaFeMg)
mindat.org URL:
https://www.mindat.org/min-4277.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Whiteite-(CaFeMg)
Reference List:
Moore, Paul Brian, Ito, Jun (1978) I. Whiteite, a new species, and a proposed nomenclature for the jahnsite-whiteite complex series. II. New data on xanthoxenite. III. Salmonsite discredited. Mineralogical Magazine, 42 (323) 309-323 doi:10.1180/minmag.1978.042.323.01
Localities for Whiteite-(CaFeMg)
Showing 13 localities.
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Austria | |
| Kolitsch et al. (2011) +2 other references |
Brazil | |
| Sergio Varvello collection |
| Cassedanne et al. (1981) |
| Sergio Varvello collection |
| Moore et al. (1978) |
Canada | |
| Pavel Kartashov Analysis |
| Robinson et al. (1992) | |
| Capitelli et al. (2011) |
| Robinson et al. (1992) | |
| Robinson et al. (1992) | |
Germany | |
| ... |
| Witzke et al. (1998) |
Spain | |
| Garate-Olave et al. (2020) |
Quick NavTopAbout Whiteite-(CaFeMg)Unique IdentifiersSimilar NamesClassification IMA Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List






symbol to view information about a locality.
The
Rapid Creek, Dawson mining district, Yukon, Canada