Boscardinite
Boscardinite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula TlPb₄(Sb₇As₂)Σ₌₉S₁₈.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Sartorite structural group.
Key properties: specific gravity 5.355; Black streak; Metallic. Anisotropism: Distinct, shades of gray luster.
IMA symbol Bcd, IMA status: approved, named in 2010.
Found in a quartz vein cutting dolostone, in association with a barite-pyrite-iron oxide deposit in regionally metamorphosed rocks.
It is found associated with Zinkenite, dolomite (Italy); stibnite and smithite (France).
The mineral was named to honor Matteo Boscardin (b. 1939) for his contribution to the knowledge of the regional mineralogy of Italy.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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