Pyrrhotite

Nikolaevski Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Far-Eastern Region  Russia

Specimen size: 2.8 × 2.3 × 2.5 cm = 1.10” × 0.91” × 0.98”
Main crystal size: 2 × 1.9 cm = 0.79” × 0.75”