Chalcocite - M'Passa Mines, Congo, Republic of the - 3.7 x 2.9 x 2.2 cm.

Mineral: Chalcocite
Locality: M'Passa Mines, Mindouli District, Pool Department, Republic of the Congo
Dimensions: 3.7 x 2.9 x 2.2 cm.

Description: An aggregate of relatively sharp bluish-black pseudo-hexagonal twinned chalcocite crystals.