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Formula: Sb2O3
Simple oxide, paramorph of
senarmontite, antimony
mineral
Specific gravity: 5.76
Hardness: 2½ to 3
Streak: White
Colour: Colourless, white, light gray, light yellow
Solubility: Soluble in hydrochloric acid; easily fusible in a closed tube
(Dana)
Common impurities: As
Environments:
Valentinite is an oxidation product of various antimony minerals in the oxidised
zone of hydrothermal antimony deposits
(Webmin, HOM).
Associated minerals include stibnite,
antimony, stibiconite,
cervantite, kermesite and
tetrahedrite
(HOM, Mindat).
At Příbram, Central Bohemian Region, Czech Republic, valentinite occurs in galena
(Dana).
At the type locality, Les Chalanches Mine, Isère, Auvergne-Rhône-Alpes, France, valentinite occurs as an oxidation product
of antimony and stibarsen
(Dana).
At the Picahotes mine, San Benito county, California, USA, valentinite occurs with
stibnite
(Dana).
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