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Formula: PbSnS3
Sulphide, tin-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 5.54 to 5.88 measured, 5.619 calculated
Hardness: 2½ to 3
Streak: Dark grey
Colour: Greyish black
Environments
Although suredaite was approved as long ago as 1997, to date (July 2023) it has been reported only
from the type locality.
Localities
At the type locality, the Oploca Vein System, Pirquitas Ag-Sn Deposit, Mina Pirquitas, Rinconada Department, Jujuy
Province, Argentina, suredaite was observed in symmetrically banded veins, associated with
sphalerite, arsenopyrite,
pyrite-marcasite,
cassiterite, cylindrite,
franckeite, hocartite,
rhodostannite and various
silver-antimony and
silver-bismuth sulphosalts in minor
amounts. Suredaite occurs in layers up to 1 cm in thickness as aggregates of radially arranged
tabular-prismatic crystals
(AM 85.1066-1075).
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