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Trithioarsenite, also called sulfarsenite, is the trianion . It is a pyramidal anion, as is typical of other compounds. It is generated by treatment of with a
sulfide Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive. ''Sulfide'' also refers to chemical compounds lar ...
: : Thioarsenites are components of many
sulfosalt minerals Sulfosalt minerals are sulfide minerals with the general formula , where *A represents a metal such as copper, lead, silver, iron, and rarely mercury (element), mercury, zinc, vanadium *B usually represents semi-metal such as arsenic, antimony, b ...
. An example is relatively common mineral
proustite Proustite is a sulfosalt mineral consisting of silver sulfarsenide, Ag3 As S3, known also as light red silver or ruby silver ore, and an important source of the metal. It is closely allied to the corresponding sulfantimonide, pyrargyrite, from whi ...
, ,Trevelyan B. 1969: The electro-optic effect in proustite. Optical and Quantum Electronics, 1(1), pp. 1969

/ref> which is
silver Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, whi ...
(I) trithioarsenite.


References

Sulfosalt minerals {{mineral-stub