XM240GF: Chalcopyrite with Sphalerite - French Creek Mines, Pennsylvania USA
Chalcopyrite with Sphalerite

French Creek Mines, St. Peters, Warwick Township, Chester County, Pennsylvania  USA

Specimen size: 8.1 × 5.6 × 3.1 cm = 3.19” × 2.20” × 1.22”
Main crystal size: 2 × 1.3 cm = 0.79” × 0.51”

specimens/s_fastAM2/XM240GF-label.jpg