Pyrrhotite

A naturally etched, vuggy and somewhat spiky matrix of grey and cream Calcite with clustered groupings of well formed bronze Pyrrhotite crystals, from Samson mine in the St. Andreasberg mining district of Lower Saxony, Germany. The crystals form thin hexagonal plates in stacked groups, the largest crystal attaining 4 mm. Hexagonal habits include gently rounded edges to sharp, perfect hexagons, all having a dull, yet slightly silky sub-metallic lustre.