Formula: Na21(SO4)7F6Cl
Origin of name: for John Schairer, American chemist
Crystal system: hexagonal
Crystal class: 3m
Twinning: common on {0001}
Unit cell: a = 12.17 Å, c = 19.29 Å
Colour: colourless
Diaphaneity: transparent
Luster: vitreous
Habit: crystals trigonal habit, minute
Hardness: 3.5
Specific gravity: 2.62
Cleavage:
Tenacity:
Streak:
Synonyms/varieties:
Comments:
| 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 |