Minerals

PHARMACOSIDERITE (KFe4(AsO4)3(OH)4.6-7(H2O))
Class: phosphate
Rarity: Very Rare Crystal:  crystal with a granular habit Magnetic after heating
Colour: green brown yellow;   Streak: green brown yellow;   Lustre: adamantine greasy;   Transparency: subtransparent subtranslucent;
Tenacity: sectile;   Cleavage: imperfect;   Fracture: uneven;  
Hardness - between 2.5 and: 2.5;   Density - between 2.9 and: 3
Dana number: 731




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