Rhodochrosite with manganese oxides

Uchucchacua Mine, Oyón Province, Lima Department  Peru

Specimen size: 5.3 × 5.1 × 3.8 cm = 2.09” × 2.01” × 1.50”
Main crystal size: 0.7 × 0.5 cm = 0.28” × 0.20”