Formula: (NH4)2SiF6
Origin of name: After locality; Bararee colliery, Barari Bengal, India
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: White
Diaphaneity:
Luster: Vitreous
Habit: Crystals tabular; crusts, mammillary, arborescent
Hardness: 2.5
Specific gravity: 2.152
Cleavage: 1; {0001}perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Dimorphous with cryptohalite
| 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 |