The arsenateion is AsO43-. An ion is an elementary particle or system of elementary particles with a net electric charge. ...
An arsenate (compound) is some compound that contains this ion.
See category for a list.
Arsenate is much like phosphate. In acid conditions we have arsenic acid, H3AsO4; in weakly acid conditions we have the dihydrogen arsenate ion, H2AsO4-; in weakly basic conditions we have hydrogen arsenate ion HAsO42-; and finally, in basic conditions, the arsenate ion AsO43-. In chemistry, a phosphate is a polyatomic ion or radical consisting of one phosphorus atom and four oxygen. ... Arsenic acid, H3AsO4, is the acid form of arsenate ion, AsO43+. Categories: Chemistry stubs | Arsenates | Acids ...
Although the number of arsenate, arsenite, phosphate, and vanadate species is second only to that of the silicates, specimens are for the most part rare, and many exceedingly so.
These species are almost entirely arsenates except magnussonite, nelenite, and schallerite, which are vein-filling arsenites; pyrobelonite and descloizite, which are the only known local vanadate minerals; and three anomalous and aberrant phosphates, meta-ankoleite, newberyite, and niahite.
The preponderance of the Sterling Hill arsenates are associated with zincite-bearing ore, the red-willemite ore of Parker and Troy (1982), in which no arsenic-bearing primary mineral is found; arsenic may have been introduced to this ore from the fl- willemite zone, the enclosing marble, or some other source.
The Arsenate, Vanadate and Antimonate Subclasses of the Phosphate Class of Minerals
The Arsenate subclass, and to a lesser extent the Vanadate Subclass, of the Phosphate Class almost perfectly mirrors the true phosphates in many ways including structure, diversity and properties.
The only major difference is the arsenate or vanadate ion replacing the phosphate ion.
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