Hauchecornite Locality: Friedrich Mine, Schönstein, Wissen , Siegerland , Rhineland-Palatinate , Germany ( Locality at mindat.org ) Picture width 3 mm. Collection and photograph Christian Rewitzer — Photo: Christian Rewitzer · CC BY-SA 3.0
Hauchecornite
Hauchecornite is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Ni₉BiSbS₈.
It crystallizes in the tetragonal crystal system (space group P4/mmm). It is a member of the hauchecornite structural group.
Key properties: Mohs hardness 5; specific gravity 6.35–6.47; Gray- black streak; Lively metallic on fresh break luster.
IMA symbol Hau, IMA status: approved, named in 1893.
Hydrothermal in origin.
It is found associated with Millerite, bismuthian-arsenian ullmannite, antimonian gersdorffite, siegenite, bismuthinite, gold, galena, sphalerite, quartz.
The mineral was named to honor William Hauchecorn (1828–1900), Director of the Geological Survey and the Mining Academy, Berlin, Germany.