Pharmacolite

A variety of Minerals

Pharmacolite specimen - rock identification

What is Pharmacolite?

Pharmacolite is an uncommon calcium arsenate mineral with formula CaHAsO4·2(H2O). It occurs as soft, white clusters of fibrous crystals and encrustations which crystallize in the monoclinic system. It is the arsenate analogue of the sulfate gypsum and the phosphate brushite.

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Pharmacolite Localities Map

See where Pharmacolite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

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North ZoneCentral RidgeSouth Basin

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More Images

Pharmacolite specimen 2
© Ji-Elle

Quick Facts

Physical Properties

Color
White or colorless, grayish white; colorless in transmitted light.
Hardness (Mohs)
2 - 2.5
Density
2.73 g/cm³
Streak
White

Chemical Properties

Chemical Formula
Ca(HAsO4) · 2H2O
Elements
As, Ca, H, O

Also Known As

PharmacoliteArsenicite
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