Teallite

minerals

Formula: PbSnS2
Sulphide, forms a series with herzenbergite
Specific gravity: 6.36
Hardness: 1½ to 2
Streak: Black
Colour: Silvery grey, lead-grey to iron-grey; tarnishes dull or iridescent
Environments

Hydrothermal

Teallite is a hydrothermal mineral found in tin veins, associated with cassiterite, stannite, franckeite, cylindrite, galena, sphalerite, wurtzite and pyrite (HOM).

At the type locality, the Santa Rosa vein, El Salvador Mines, Monserrat-Antequera mining district, Pazña, Poopó Province, Oruro, Bolivia, teallite is associated with wurtzite and greenockite (Mindat).

Common impurities: Fe

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