Formula: (Ba,Pb,Ca,K)6(B,Si,Al)2(Si,Be)10O28(F,Cl)
Origin of name: From Greek for glass and to melt
Crystal system: Triclinic, pseudomonoclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: White, gray
Diaphaneity: Translucent
Luster: Vitreous
Habit: Massive, coarsely crystalline
Hardness: 5 to 5.5
Specific gravity: 3.82
Cleavage: 2; Two at 90°
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 |