Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Pharmacosiderite from
Thier des Carrières, Cahay, Vielsalm, Luxembourg, Wallonia, Belgium


Locality type:Quarry
Classification
Species:Pharmacosiderite
Formula:KFe43+(AsO4)3(OH)4 · 6-7H2O
Comments:Associated with arsenopyrite. Chemical analysis shows the presence of low quantities of Al replacing Fe3+.
Habit:coatings consisting of cubic or tetrahedral microcrystals up to 100µm showing {100} and {111}
Colour:yellowish, pale green, brownish
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pharmacosiderite data
Locality Data:Click here to view Thier des Carrières, Cahay, Vielsalm, Luxembourg, Wallonia, Belgium
Data Identifiers
Mindat Occurrence Record ID:70427
Long-form Identifier:1:3:70427:6
GUID (UUID V4):0
Nearest other occurrences of Pharmacosiderite
3.2km (2.0 miles) ⓘHourt quarry, Grand-Halleux, Vielsalm, Luxembourg, Wallonia, Belgium
References
Hatert, F., Blondiau, M., Dehove, J., Fransolet, A-M. (1998) Les minéraux secondaires en relation avec les sulfures de la region de Vielsalm, Belgique. Bulletin de la Société Royal des Sciences de Liège, 67(6), 281-289.
Hatert, F., Deliens, M., Fransolet, A.-M., Van Der Meersche, E. (2002) Les minéraux de Belgique (2nd ed.) Muséum des Sciences Naturelles, Bruxelles.
 
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