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Formula: Pb4MnSb6S14
Sulphosalt, forms a series with jamesonite,
manganese- and antimony- bearing mineral
Crystal System: Monoclinic
Specific gravity: 5.60 calculated
Hardness: 2½
Streak: Brown-grey
Colour: Lead grey
Common impurities: Cu,Zn,Bi
Environments:
Benavidesite occurs in metamorphosed iron sulfide deposits, associated with
bismuth,
freibergite, galena,
gudmundite, spessartine and
sphalerite
(Mindat).
Localities
At Dachang, Nandan County, Hechi, Guangxi, China, benavidesite is associated with pyrite and
calcite
(HOM).
There are two co-type localities, the Uchucchacua mine, Oyon Province, Lima, Peru and the Sätra mine, Doverstorp ore field,
Finspång, Östergötland county, Sweden. Benavidesite forms in very reducing conditions.
At the Uchucchacua mine, Peru, benavidesite occurs in polymetallic mineralisation associated with
dacite intrusions, and associated with galena,
manganoan sphalerite, pyrite,
pyrrhotite, alabandite,
uchucchacuaite, quartz,
bustamite, rhodonite and
calcite
(HOM).
At the Sätra mine, Sweden, benavidesite occurs in a metamorphosed iron sulphide deposit
associated with
galena, freibergite,
gudmundite, manganoan sphalerite,
bismuth and spessartine
(HOM).
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