Non-silicates
Brucite thin section
For Archibald Bruce (1777-1818), American mineralogist, who first described the species.
Formula: Mg(OH)2
System: Trigonal
Color: White, light greenish, etc.
Lustre: Vitreous, Waxy, Pearly
Hardness: 2½–3
Density: 2.39
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