Minerals identify

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Picropharmacolite

Arsenate mineral

Picropharmacolite, Ca4Mg(AsO3OH)2(AsO4)2·11H2O, is a rare arsenate mineral. It was named in 1819 from the Greek for bitter, in allusion to its magnesium content, and its chemical similarity to pharmacolite , Ca4Mg(AsO3OH)2(AsO4)2·4H2O, has the same composition as picropharmacolite, except that it has only four water molecules per formula unit, instead of eleven. It may be formed by the dehydration of picropharmacolite.

Identification

Color of mineral

White

Mohs scale ( mineral hardness )

1

Density ( specific gravity )

1.631
1.632
1.64
1.557
1.566
1.577

Luster ( interacts light )

Silky
Pearly

Crystal ( diaphaneity )

Triclinic

Fluorescent

Fluorescent