Bunker Hill Mine, Waneta-Nelway British Columbia, Canada S-89-166 — Photo: Pacific Museum of Earth from Canada · CC BY-SA 2.0
Joséite-A
Joséite-A is an IMA-recognized mineral species in the sulfide class, with the chemical formula Bi₄TeS₂.
It is a member of the Tetradymite structural group.
Key properties: Mohs hardness 2; specific gravity 8.18; High metallic, tarnishing lead-gray, iridescent, steel-blue to iron-black luster.
IMA symbol Js-A, IMA status: questionable, named in 1853.
Found in bismuth-rich hydrothermal deposits.
It is found associated with Gold, bismuth, bismuthinite, galenobismutite, hessite, cosalite, laitakarite, tetradymite, joséite-B.
The name is derived from the locality at San José in Brazil.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more J minerals or help write this entry.