Digenite
Cu_1.80S

     Digenite occurs rarely at MSH. It cannot be visually distinguished from djurleite.

PHYSICAL CHARACTERISTICS:

Color is usually black.
Luster is sub-metallic.
Diaphaneity is opaque.
Crystal System is isometric; Fm3m.
Crystal Habits include very small grains.
Cleavage {111} present.
Fracture is conchoidal.
Hardness is 2.5 - 3.
Specific Gravity is approximately 5.6 g/cm³.
Streak is black.
Associated Minerals include (??).
Distinguishing Features: Crystal habits.
Origin: Named in 1844 from the Greek digenes, of two kinds,
   because it was thought to be a mixture of two sulfides.

CLASSIFICATION:

REFERENCES:
Dana 8:47-48 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

Legend