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Formula: Pb3Cu3Bi7S15
Sulphosalt, forms a series with aikinite,
bismuth-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 7.01 measured, 7.03 calculated
Hardness: 3 to 3½
Streak: Black
Colour: Lead-grey
Environments
Lindströmite is of hydrothermal origin. Associated minerals include
krupkaite, other
aikinite–bismuthinite series
members and bismuth
(HOM).
Localities
At the Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada, the major ore minerals in the deposit
are native silver and skutterudite,
with minor chalcopyrite,
sphalerite, galena,
pyrite and nickeline hosted in
systems of calcite veins. Lindströmite is associated with laths of
native bismuth and, in some cases, with minor amounts of
chalcopyrite in mineralised veins a few mm thick in a
graywacke matrix. The mineral textures are consistent with
crystallisation at temperatures below the melting point of bismuth (below 270°C)
(CM.36.1139-1148).
At the type locality, the Gladhammar mines, Västervik, Kalmar County, Sweden, lindströmite occurs on
quartz in crystals 1 cm long and several mm thick
(AM 10.157). The type crystal contains a small amount of exsolved
krupkaite
(CM 15.527-535).
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