Formula: CaCu5(AsO4)2(CO3)(OH)4.6H2O
Origin of name: after locality Tyrol, Austria
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 10.21 Å, b = 55.51 Å, c = 5.602 Å
Colour: pale apple-green to greenish blue to sky-blue
Diaphaneity:
Luster: vitreous, pearly on cleavage
Habit: crystals lath-like, rare, drusy crusts, flatted scales, fan-shaped aggregates, reniform masses
Hardness: about 2
Specific gravity: 3.18
Cleavage: 1; {001} perfect
Tenacity: thin laminae flexible, sectile
Streak:
Synonyms/varieties:
Comments:
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