Formula: Mg(OH)2
Origin of name: For A. Bruce, American mineralogist
Crystal system: Hexagonal
Crystal class: -3 2/m
Unit cell: a = 3.15 Ǻ, b = 4.77 Ǻ
Colour: White, pale green, gray, gray-blue, blue
Diaphaneity:
Luster: Pearly, waxy, vitreous
Habit: Crystals broad tabular; acicular; foliated massive, scaly, fine granular
Hardness: 2.5
Specific gravity: 2.39
Cleavage: 1; {0001} perfect
Tenacity: Plates separable and flexible
Streak: White
Synonyms/varieties: Texalite, shepardite, nemalite (fibrous variety)
Comments:
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