Brucite
ID: 133
Brucite
Chemical Formula
Mg(OH)2
Hardness (Mohs)
2.5 - 3
Crystal System
Trigonal
Streak
White
Luster
Vitreous, Waxy, Pearly
Diaphaneity
Transparent, Translucent
Color
White, light greenish, grayish, bluish; honey-yellow, brownish red deep brown (manganoan varieties).
Crystal Habit / Mode of Occurrence
Tabular crystals, foliated masses, fibrous, massive.
Fun Facts
Brucite is notable for its perfect basal cleavage, allowing it to be peeled into thin sheets.