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Anloua, Martap, Vina, Adamawa Region, Camerooni
Regional Level Types
AnlouaOccurrence
MartapCommune
VinaDepartment
Adamawa RegionRegion
CameroonCountry

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PhotosMapsSearch
07263200017272081297233.jpg
Vivianite

Anloua, Martap, Vina, Adamawa Region, Cameroon
08345150017272081327314.jpg
Mantienneite

Anloua, Martap, Vina, Adamawa Region, Cameroon
02190410017272081341825.jpg
Mantienneite

Anloua, Martap, Vina, Adamawa Region, Cameroon
07263200017272081297233.jpg
Vivianite

Anloua, Martap, Vina, Adamawa Region, Cameroon
08345150017272081327314.jpg
Mantienneite

Anloua, Martap, Vina, Adamawa Region, Cameroon
02849420017271924874143.jpg
Mantienneite

Anloua, Martap, Vina, Adamawa Region, Cameroon
06537760017272081365728.jpg
Vivianite

Anloua, Martap, Vina, Adamawa Region, Cameroon
08345150017272081327314.jpg
Mantienneite

Anloua, Martap, Vina, Adamawa Region, Cameroon
Latitude & Longitude (WGS84):
7° 25' North , 13° 26' East
Latitude & Longitude (decimal):
7.41667,13.43333
GRN:
N05E10
Type:
Occurrence
Köppen climate type:
Aw : Tropical savanna, wet
Nearest Settlements:
PlacePopulationDistance
Ngaoundéré231,357 (2013)19.4km
Mindat Locality ID:
55149
Long-form identifier:
mindat:1:2:55149:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Anlona


Located near Ngaoundéré (the capital of the Adamaoua Region).

Lacustrine late Tertiary to Quaternary sedimentary (sands and clays) basin in a depression of a basaltic plateau.

Black varved argillites that contained large vivianite crystals are essentially composed of kaolinite, siderite, quartz, organic matter, fluorapatite, and crandallite.

The sand lenses that contain the mantienneite are composed of quartz, feldspars, volcanic glass, and chrome spinel in a mantienneite, kaolinite, chlorite-montmorillonite mixed-layer and siderite cement.

Worldwide unique occurrence for the size of vivianite crystals abundant in black argillites (http://www.musee.ensmp.fr/gm/60.html). Some of these vivianite crystal aggregates were over 2 metres in diameter with individual crystals to 1.35 metres.

The vivianite locality is essentially swampland.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


14 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

ⓘ Anatase
Formula: TiO2
ⓘ Beraunite
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
ⓘ Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'Kertschenite'
ⓘ Lipscombite
Formula: Fe2+Fe3+2(PO4)2(OH)2
ⓘ Mantienneite (TL)
Formula: KMg2Al2Ti(PO4)4(OH)3 · 15H2O
Type Locality:
ⓘ Metavivianite
Formula: Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
ⓘ Phosphosiderite
Formula: FePO4 · 2H2O
ⓘ Quartz
Formula: SiO2
ⓘ Santabarbaraite
Formula: Fe3+3(PO4)2(OH)3 · 5H2O
ⓘ Siderite
Formula: FeCO3
ⓘ Strengite
Formula: FePO4 · 2H2O
ⓘ Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
✪ Vivianite
Formula: Fe2+Fe2+2(PO4)2 · 8H2O

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘAnatase4.DD.05TiO2
Group 5 - Nitrates and Carbonates
ⓘSiderite5.AB.05FeCO3
Group 8 - Phosphates, Arsenates and Vanadates
ⓘLipscombite8.BB.90Fe2+Fe3+2(PO4)2(OH)2
ⓘPhosphosiderite8.CD.05FePO4 · 2H2O
ⓘStrengite8.CD.10FePO4 · 2H2O
ⓘVivianite8.CE.40Fe2+Fe2+2(PO4)2 · 8H2O
ⓘSantabarbaraite8.CE.80Fe3+3(PO4)2(OH)3 · 5H2O
ⓘMetavivianite8.DC.25Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
ⓘStrunzite8.DC.25Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
ⓘBeraunite8.DC.27Fe3+6(PO4)4O(OH)4 · 6H2O
ⓘCacoxenite8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
ⓘMantienneite (TL)8.DH.35KMg2Al2Ti(PO4)4(OH)3 · 15H2O
Group 9 - Silicates
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
ⓘ'Kertschenite'-

List of minerals for each chemical element

HHydrogen
Hⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Hⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ LipscombiteFe2+Fe23+(PO4)2(OH)2
Hⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
Hⓘ MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
Hⓘ PhosphosideriteFePO4 · 2H2O
Hⓘ StrengiteFePO4 · 2H2O
Hⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Hⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Hⓘ SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
CCarbon
Cⓘ SideriteFeCO3
OOxygen
Oⓘ AnataseTiO2
Oⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Oⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ LipscombiteFe2+Fe23+(PO4)2(OH)2
Oⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
Oⓘ MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
Oⓘ PhosphosideriteFePO4 · 2H2O
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
Oⓘ StrengiteFePO4 · 2H2O
Oⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Oⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Oⓘ SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
MgMagnesium
Mgⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
AlAluminium
Alⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
SiSilicon
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ QuartzSiO2
PPhosphorus
Pⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Pⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Pⓘ LipscombiteFe2+Fe23+(PO4)2(OH)2
Pⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
Pⓘ MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
Pⓘ PhosphosideriteFePO4 · 2H2O
Pⓘ StrengiteFePO4 · 2H2O
Pⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Pⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Pⓘ SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
KPotassium
Kⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
TiTitanium
Tiⓘ AnataseTiO2
Tiⓘ MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
MnManganese
Mnⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
FeIron
Feⓘ BerauniteFe63+(PO4)4O(OH)4 · 6H2O
Feⓘ CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Feⓘ LipscombiteFe2+Fe23+(PO4)2(OH)2
Feⓘ MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
Feⓘ PhosphosideriteFePO4 · 2H2O
Feⓘ SideriteFeCO3
Feⓘ StrengiteFePO4 · 2H2O
Feⓘ StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Feⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Feⓘ SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

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

www.persee.fr (n.d.) https://www.persee.fr/docAsPDF/bulmi_0180-9210_1984_num_107_6_7815.pdf
Fransolet, André-Mathieu, Oustrière, Pascal, Fontan, François, Pillard, François (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie, 107 (6) 737-744 doi:10.3406/bulmi.1984.7815
Oustrière, P. (1984) Étude géologique et géochimique du bassin lacustre d'Anloua (Cameroun): Application à la compréhension de la genèse de la vivianite. Doctorate Thesis, Orléans University.
Hanzel, D., Meisel, W., Gütlich, P. (1990) Conversion electron Mössbauer study of vacuum and thermally treated vivianite. Hyperfine Interactions: 57: 2201-2208 [Vivianite from Anloua used in this study].
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