Chalcopyrite
CuFeS₂

     Chalcopyrite is a rare mineral at Mont Saint-Hilaire.

PHYSICAL CHARACTERISTICS:

Color is brass-yellow, sometimes with iridescence.
Luster is metallic.
Diaphaneity is opaque.
Crystal System is tetragonal; I42d.
Crystal Habits include sharp disphenoids to 2 - 3mm and as
    embedded masses.
Cleavage {011} is distinct.
Fracture is uneven.
Hardness is 3.5 - 4.
Specific Gravity is approximately 4.2 g/cm³.
Streak is green black.
Associated Minerals include biotite, galena, pyrite, pyrrhotite
   and sphalerite.
Distinguishing Features: Crystal habit.
Origin: Named in 1747 from the Greek chalkos, copper, plus pyrite.

CLASSIFICATION:

REFERENCES:
MinRec 21:303 (1990), Dana 8:87-88 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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