Formula: CoSe2
Origin of name: For P. F. Hast, German mining engineer
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Light brownish red to dark reddish violet
Diaphaneity:
Luster:
Habit: Crystals idiomorphic and radiating
Hardness: ~ 6
Specific gravity: 7.22
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Dimorphous with trogtalite
| Back to Alphabetical list | Colour photos | Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |