Arseniosiderite is a rare
arsenate mineral
Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO4)3โ anion group and, more rarely, other arsenates with anions like AsO3(OH)2โ (also written HAsO42โ) (example: pharmacolite Ca(AsO3OH).2H2O) or (v ...
formed by the oxidation of other arsenic-containing minerals, such as
scorodite
Scorodite is a common hydrated iron arsenate mineral, with the chemical formula FeAsO4ยท2H2O. It is found in hydrothermal deposits and as a secondary mineral in gossans worldwide. Scorodite weathers to limonite.
Scorodite was discovered in the S ...
or
arsenopyrite
Arsenopyrite ( IMA symbol: Apy) is an iron arsenic sulfide (FeAsS). It is a hard ( Mohs 5.5-6) metallic, opaque, steel grey to silver white mineral with a relatively high specific gravity of 6.1. When dissolved in nitric acid, it releases eleme ...
. It occurs in association with beudantite, carminite, dussertite, pharmacolite, pitticite, adamite and erythrite. The name arseniosiderite reflects two major elements of the mineral, arsenic and iron (Greek ''sideros'' means iron).
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References
Arsenate minerals
Monoclinic minerals
Minerals in space group 15
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