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Formula: VS4
Sulphide of vanadium
Crystal System: Monoclinic
Specific gravity: 2.82 measured, 2.834 calculated
Hardness: 2
Streak: Black
Colour: Lead-grey on fresh surface, grey-black on exposed surface
Environments
Sedimentary environments
Hydrothermal environments
Patrónite is commonly associated with bravoite,
dwornikite, lignite,
minasragrite, pyrite,
quartz, stanleyite and
sulphur
(Mindat).
Localities
At the type locality, the Ragra Mine, Huayllay District, Pasco Province, Pasco, Peru, patrónite occurs as
an interstitial filling in the core of a porous 2.5 m layer of admixed vanadium
bearing minerals. The minerals are in
fissures that cut red shale. Associated minerals include
sulphur, bravoite,
pyrite, minasragrite,
stanleyite, dwornikite,
quartz, vanadian
lignite and natural coke
(HOM).
Patrónite was a major ore mineral in what was the world's richest
vanadium deposit
(Webmin).
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