Formula: (Co,Fe)AsS
Origin of name: From Greek glaukos = bluish green and giver
Crystal system: Orthorhombic, pseudocubic
Crystal class: 2/m 2/m 2/m
Twinning: On {012}, penetration, cruciform
Unit cell: a = 6.64 Ǻ, b = 28.39 Ǻ, c = 5.64 Ǻ
Colour: Grayish tin-white to reddish silver-white
Diaphaneity:
Luster: Metallic
Habit: Crystals short prismatic, striated in the prism zone; massive
Hardness: 5
Specific gravity: 6.06
Cleavage: 2; {010} perfect {101} distinct
Tenacity: Uneven; brittle
Streak: Black
Synonyms/varieties:
Comments: Dimorphous with alloclasite
| 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 |