Pyrrhotite with Magnesite

Morro Velho Mine, Nova Lima, Belo Horizonte, Minas Gerais  Brazil

Specimen size: 2.9 × 2.6 × 1.7 cm = 1.14” × 1.02” × 0.67”
Main crystal size: 1.2 × 1.1 cm = 0.47” × 0.43”