Stibiconite

Stibiconite is an antimony oxide mineral with formula: Sb3O6(OH). Its name originates from Greek stíbi (στίβι), 'antimony' and kónis, 'powder', alluding to its composition and habit. It is a member of the pyrochlore super group.

Discovery and occurrence
It was first described in 1862 for an occurrence in the Brandholz – Goldkronach District, Fichtel Mountains, Bavaria, Germany.

It occurs as a secondary alteration product of other hydrothermal antimony minerals such as stibnite. It occurs in association with cervantite, valentinite, kermesite, native antimony and stibnite.