Asisite (Picture size 4 mm) Fundort: Kombat Mine, Kombat, Namibia. Orange asisite in hausmannite . Collection and foto Thomas Witzke. — Photo: Thomas Witzke · CC BY-SA 3.0 de
Asisite
A yellow tetragonal lead silicate-chloride from Namibia's Kombat mine, named for the farm where the mine sits.
Intro adapted from Wikipedia (CC BY-SA).
Asisite is an IMA-recognized mineral species in the silicate class, with the chemical formula Pb₇SiO₈Cl₂.
It crystallizes in the tetragonal crystal system (space group I4/mmm). It is a member of the Asisite structural group.
Key properties: specific gravity 8.041; Light yellow to white streak; Adamantine luster; optically uniaxial.
IMA symbol Ass, IMA status: approved, named in 1987.
Found in manganese silicate lenses nearby a sulfide ore body.
It is found associated with Hematophanite, barite, jacobsite, hematite, copper, molybdophyllite, chlorite.
The name refers to the Asis Farm, location of the Kombat mine, which in the Nama language means drinking place.