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Anloua, Adamaoua Region, Camerooni
Regional Level Types
Anloua- not defined -
Adamaoua RegionRegion
CameroonCountry

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Key
Latitude & Longitude (WGS84):
7° 25' North , 13° 29' East
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Ngaoundéré231,357 (2013)14.9km


Located near Ngaoundéré (capital of Adamaoua Region).

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

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

The sand lenses that contains the mantienneite are composed of quartz, feldpaths, volcanic glass, chromspinel, 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 aggreagates were in excess of 2 metres in diameter with individual crystals to 1.35 metres.

The vivianite locality is essentially swamp land.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


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

Detailed Mineral List:

Anatase
Formula: TiO2
Reference: P. Oustrière : "Etude géologique et géochimique du bassin lacustre d'Anloua (Cameroun) : Application à la compréhension de la genèse de la vivianite", Doctorate Thesis, Orléans University, 1984.
Beraunite
Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Reference: F. Pillard : "Contribution à l'étude de l'altération de la vivianite : cas de la vivianite d'Anloua (Cameroun)", Doctorate Thesis, Orléans University, 1984.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Fransolet, A.-M., Oustriere, P., Fontan, F. & Pillard, F. (1984): La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744
'Kertschenite'
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Lipscombite
Formula: Fe2+Fe3+2(PO4)2(OH)2
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Mantienneite (TL)
Formula: KMg2Al2Ti(PO4)4(OH)3 · 15H2O
Type Locality:
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Metavivianite
Formula: Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Phosphosiderite
Formula: FePO4 · 2H2O
Reference: F. Pillard : "Contribution à l'étude de l'altération de la vivianite : cas de la vivianite d'Anloua (Cameroun)", Doctorate Thesis, Orléans University, 1984.
Quartz
Formula: SiO2
Reference: Fransolet, A.-M., Oustriere, P., Fontan, F. & Pillard, F. (1984): La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744
Santabarbaraite
Formula: Fe3+3(PO4)2(OH)3 · 5H2O
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Siderite
Formula: FeCO3
Reference: Fransolet, A.-M., Oustriere, P., Fontan, F. & Pillard, F. (1984): La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744
Strengite
Formula: FePO4 · 2H2O
Reference: F. Pillard : "Contribution à l'étude de l'altération de la vivianite : cas de la vivianite d'Anloua (Cameroun)", Doctorate Thesis, Orléans University, 1984.
Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: F. Pillard : "Contribution à l'étude de l'altération de la vivianite : cas de la vivianite d'Anloua (Cameroun)", Doctorate Thesis, Orléans University, 1984.
Vivianite
Formula: Fe2+3(PO4)2 · 8H2O
Reference: FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.

List of minerals arranged by Strunz 10th Edition classification

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

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Anatase4.4.4.1TiO2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
A3(XO4)2·xH2O
Vivianite40.3.6.1Fe2+3(PO4)2 · 8H2O
(AB)5(XO4)2·xH2O
Phosphosiderite40.4.3.2FePO4 · 2H2O
Strengite40.4.1.2FePO4 · 2H2O
Metavivianite40.11.9.4Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)3(XO4)2Zq
Lipscombite41.10.2.1Fe2+Fe3+2(PO4)2(OH)2
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)3(XO4)2Zq·xH2O
Beraunite42.11.16.1Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Mantienneite (TL)42.11.21.2KMg2Al2Ti(PO4)4(OH)3 · 15H2O
Strunzite42.11.9.1Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Miscellaneous
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Kaolinite-Al2(Si2O5)(OH)4
'Kertschenite'-
Santabarbaraite-Fe3+3(PO4)2(OH)3 · 5H2O

List of minerals for each chemical element

HHydrogen
H MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
H VivianiteFe32+(PO4)2 · 8H2O
H MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
H LipscombiteFe2+Fe23+(PO4)2(OH)2
H BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
H SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
H StrengiteFePO4 · 2H2O
H PhosphosideriteFePO4 · 2H2O
H StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H KaoliniteAl2(Si2O5)(OH)4
CCarbon
C SideriteFeCO3
OOxygen
O MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
O VivianiteFe32+(PO4)2 · 8H2O
O MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
O LipscombiteFe2+Fe23+(PO4)2(OH)2
O BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
O SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
O StrengiteFePO4 · 2H2O
O PhosphosideriteFePO4 · 2H2O
O StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O AnataseTiO2
O QuartzSiO2
O SideriteFeCO3
O KaoliniteAl2(Si2O5)(OH)4
MgMagnesium
Mg MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
AlAluminium
Al MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
Al CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si QuartzSiO2
Si KaoliniteAl2(Si2O5)(OH)4
PPhosphorus
P MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
P VivianiteFe32+(PO4)2 · 8H2O
P MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
P LipscombiteFe2+Fe23+(PO4)2(OH)2
P BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
P SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
P StrengiteFePO4 · 2H2O
P PhosphosideriteFePO4 · 2H2O
P StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
P CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
KPotassium
K MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
TiTitanium
Ti MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2O
Ti AnataseTiO2
MnManganese
Mn StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
FeIron
Fe VivianiteFe32+(PO4)2 · 8H2O
Fe MetavivianiteFe2+Fe23+(PO4)2(OH)2 · 6H2O
Fe LipscombiteFe2+Fe23+(PO4)2(OH)2
Fe BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
Fe SantabarbaraiteFe33+(PO4)2(OH)3 · 5H2O
Fe StrengiteFePO4 · 2H2O
Fe PhosphosideriteFePO4 · 2H2O
Fe StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe SideriteFeCO3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Fransolet, A.-M., Oustriere, P., Fontan, F. & Pillard, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
Oustrière, P. (1984) Etude géologique et géochimique du bassin lacustre d'Anloua (Cameroun): Application à la compréhension de la genèse de la vivianite, Doctorate Thesis, Orléans University, 1984.
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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