This Pyrite cube in Matrix is from Navajún, Spain. These are natural pyrite minerals and are famous all around the world for their incredible formation. Originally discovered in 1965, the mine has been continually worked to this day. The chemical formula for pyrite is FeS2.
This features one cube measuring 2.7 cm x 2.5 cm x 2.7 cm in its original matrix, approximately 8 cm long.
You will receive the exact mineral specimen pictured.