Marcasite on Calcite Crystal⛏️🍁 This is a rare piece from one of the largest iron mines in Ontario, collecting is not permitted and can only be done through registered trips that happen once a decade! Weight: 325g Origin: Marmora Iron Mine, Ontario, Canada Size: 100 x 60 x 40mm Matrix Calcite>Dolostone 📦Secuerly Shipped from Ontario Canada 🍁