Brochantite is relatively rare at MSH.
Color is usually red.
Luster is dull.
Diaphaneity is opaque.
Crystal System is monoclinic; P21/a.
Crystal Habits include altered red masses.
Cleavage not observed.
Fracture is uneven to conchoidal.
Hardness is 3.5 – 4.
Specific Gravity is approximately 3.97 g/cm3.
Streak is pale green.
Associated Minerals include (??).
Distinguishing Features: Crystal habit and color.
Origins: Named in 1824 after A. J. M. Brochant de Villiers (1772-1840),
French geologist and mineralogist.
Dana 8:623-624 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH PE AP MX SS MC HF BR SX FR
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