What are arsenate minerals?

Arsenate Minerals

Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO4)3- anion group and, more rarely, other arsenates with anions like AsO3(OH)2- (also written HAsO42-) (example: pharmacolite Ca(AsO3OH).2H2O) or (very rarely) - (example: andyrobertsite). Arsenite minerals are much less common. Both the Dana and the Strunz mineral classifications place the arsenates in with the phosphate minerals.

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