Cu₄(SO₄)(OH)₆

Brochantite is relatively rare at MSH.

PHYSICAL CHARACTERISTICS:

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.

CLASSIFICATION:

REFERENCES:
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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