Biagioniite

biagioniite

aurostibite

stibarsen

gold

Images

Formula: Tl₂SbS₂
Sulphosalt, thallium- and antimony- bearing mineral
Crystal System: Monoclinic
Specific gravity: 6.192 calculated
Hardness: 3
Streak: Black
Colour: Black
Environments

Hydrothermal environments

Biagioniite is a relatively new mineral, found in a museum sample, approved in 2019 and to date (February 2023) reported only from the type locality.

Localities

At the type locality, the Hemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, Canada, biagioniite occurs as very rare opaque, black, anhedral crystals with a metallic lustre up to 65 μm across. Associated minerals include aurostibite, stibarsen and native gold in a calcite matrix (MM 84.390-397).

Back to Minerals