Rhodochrosite with manganese oxides

Uchucchacua Mine, Oyón Province, Lima Department  Peru

Specimen size: 5.4 × 5.1 × 5.8 cm = 2.13” × 2.01” × 2.28”
Main crystal size: 1.7 × 0.7 cm = 0.67” × 0.28”