Thalcusite
Thalcusite is an IMA-recognized mineral species in the sulfide class, with the chemical formula (Cu,Fe)₄Tl₂S₄.
It crystallizes in the tetragonal crystal system (space group I4/mmm). It is a member of the Bukovite structural group.
Key properties: specific gravity 6.15; Metallic luster.
IMA symbol Thl, IMA status: approved, named in 1975.
Found in base-metal sulfide deposits and hyperalkalic massifs.
It is found associated with Platinum and palladium minerals, altaite, galena, sphalerite, djerfisherite, pentlandite, cubanite, chalcopyrite (Majak mine, Russia); chalcopyrite.
The name refers to the constituents THALlium; CUprum, copper; and Sulfur.
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 T minerals or help write this entry.