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Arsenate minerals usually refer to the naturally occurring orthoarsenates, possessing the (AsO 4) 3− anion group and, more rarely, other arsenates with anions like AsO 3 (OH) 2− (also written HAsO 4 2−) (example: pharmacolite Ca(AsO 3 OH). 2H 2 O) or (very rarely) [AsO 2 (OH) 2] − (example: andyrobertsite). Arsenite minerals are much ...
Arsenate minerals are those minerals containing the arsenate (AsO 4 3−) anion group. Both the Dana [1] and the Strunz [2] mineral classifications place the arsenates in with the phosphate minerals .
Arsenate readily reacts with metals to form arsenate metal compounds. [2] [3] Arsenate is a moderate oxidizer and an electron acceptor, with an electrode potential of +0.56 V for its reduction to arsenite. [4] Due to arsenic having the same valency and similar atomic radius to phosphorus, arsenate shares similar geometry and reactivity with ...
Erythrite, also known as red cobalt, previously cobalt ochre [5]: 172 is a secondary hydrated cobalt arsenate mineral with the formula Co 3 (AsO 4) 2 •8H 2 O. Erythrite and annabergite, chemical formula Ni 3 (AsO 4) 2 •8H 2 O, or nickel arsenate form a complete series with the general formula (Co,Ni) 3 (AsO 4) 2 •8H 2 O. Erythrite crystals
Olivenite is a copper arsenate mineral, formula Cu 2 As O 4 OH.It crystallizes in the monoclinic system (pseudo-orthorhombic), [2] and is sometimes found in small brilliant crystals of simple prismatic habit terminated by domal faces.
Arsenate minerals (101 P) Arsenide minerals (2 C, 16 P) Pages in category "Arsenic minerals" The following 56 pages are in this category, out of 56 total.
Arsenate minerals (101 P) Pages in category "Arsenates" The following 26 pages are in this category, out of 26 total. This list may not reflect recent changes. ...
Eveite is a manganese arsenate mineral in the olivenite group. Its chemical formula is Mn 2 AsO 4 OH. It is found only in Långban, Filipstad, Värmland, Sweden and at the Sterling Mine in New Jersey, United States. It is a dimorph of sarkinite and is isostructural with adamite.