Formula: (Mg, Fe)9(SiO4)4(F,OH)2
Origin of name: From monoclinic and humite
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Yellow, brown, white
Diaphaneity: Transparent to translucent
Luster: Vitreous
Habit: Crystals varied, highly modified; lamellar
Hardness: 6
Specific gravity: 3.17 to 3.35
Cleavage: 1; {100} indistinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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