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Pharmacosiderite

#56793

Pharmacosiderite

#56793
Availability
Sold
Size
3.5 x 2.5 x 2.5 cm - Miniature 
Formula
KFe3+4(AsO4)3(OH)4·6-7H2O (RRUFF)
Locality
Pendarves mine, Camborne, Cornwall, England
Tagged
arsenate

Apple green cubic crystals to about 0.75mm and less. They photograph brown but are really green!

Pharmacosiderite

Formula
KFe3+4(AsO4)3(OH)4·6-7H2
Crystal System
Isometric 
Crystal Habit
Blocky, Crystalline - Coarse, Earthy 
Cleavage
Indistinct, None, None 
Luster
Adamantine - Resinous 
Color
olive green, emerald green, reddish brown, yellowish brown, honey yellow 
Streak
yellowish green 
Class
Isometric - Hextetrahedral 
Fracture
Brittle - Sectile 
Hardness
2.5 

Data courtesy of Webmineral.

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