Formula: (Cu,Hg)11Sn4S16
Origin of name: for A.S. Velikyi (1913-1970), Russian geologist and well known investigator of the ore deposits of Central Asia.
Crystal system: Tetragonal
Crystal class: 4 2m
Twinning:
Unit cell: a = 5.555, c = 10.911
Colour: Dark gray, gray, greenish gray, light gray
Diaphaneity: Opaque
Luster: Metallic
Habit: Granular
Hardness: 4
Specific gravity: 5.59
Cleavage: None
Tenacity: Brittle, uneven fracture
Streak: Gray
Synonyms/varieties:
Comments:
| Back to Alphabetical list | Colour photos | Optical properties/Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |