Formula: Cu5(SiO3)4(OH)2
Origin of name: after locality Shattuck mine, Bisbee, Arizona, USA
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 9.88 Å, b = 19.82 Å, c = 5.39 Å
Colour: blue to dark blue
Diaphaneity:
Luster: vitreous to silky
Habit: crystals slender prismatic, 1 to 2 mm, radiating spherulic aggregates, massive, compact, granular, fibrous
Hardness: 3.5
Specific gravity: 4.11
Cleavage: 2; {010} and {100} excellent
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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