Formula: KAlSiO4
Origin of name: From composition and from Greek for friend
Crystal system: Hexagonal
Crystal class: 6
Twinning:
Unit cell:
Colour: Colourless
Diaphaneity: Transparent
Luster: Vitreous
Habit: Crystals thick prismatic or acicular
Hardness: 6
Specific gravity: 2.49 to 2.67
Cleavage: 2; {0001} indistinct
Tenacity:
Streak:
Synonyms/varieties:
Comments: Polymorphous with kalsilite, panunzite and trikalsilite
| 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 |