Formula: KLi2AlSi4O10(F,OH)2
Origin of name: from Greek for many and from lithium
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 5.19 Å, b = 8.97 Å, c = 10.03 Å, b = 100.4°
Colour: white, pink, cream, greenish, bluish
Diaphaneity:
Luster: pearly
Habit: crystals tabular, hexahedral, to 5 cm, scaly aggregates, massive, cryptocrystalline, pseudomorphs of monoclinic natrolite
Hardness: 2 to 3
Specific gravity: 2.58 to 2.76
Cleavage: 1; {001} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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