Superb specimen of twinned Marcasite decorated with Calcite from Linwood Mine, Scott Co., Iowa, USA. It displays sharp, metallic Marcasite crystals with strong luster. They are symmetrically twinned. In addition the Marcasites are crystallized in a cluster forming beautiful spears. It is iridescent. Small white Calcite crystals grow above. In excellent condition – some small nicks and contacts. On acrylic base.

Marvelous!