Xanthiosite

 Xanthiosite is an arsenate mineral first discovered in Germany in 1858; it may also be found in Greece. It is not radioactive.

Xanthiosite
Xanthiosite and aerugite
General
Category	Arsenate mineral
Formula (repeating unit)	Ni3(AsO4)2
Strunz classification	8.AB.25
Crystal system	Monoclinic
Crystal class	Prismatic (2/m) (same H-M symbol)
Space group	P21/a
Identification
Formula mass	453.91 g/mol
Color	Golden yellow
Mohs scale hardness	4
Diaphaneity	Translucent
Specific gravity	5.37 - 5.47
References

This article uses material from the Wikipedia article  Metasyntactic variable, which is released under the  Creative Commons Attribution-ShareAlike 3.0 Unported License.