Marcasite Quartz Calcite Cluster from Russia Herkimer The reddish-brown rock consists of

The reddish-brown rock consists of sandy crystals of barite (barium sulphate) in petal-like clusters that resemble a rose in full bloom

5" x 2" and weighs 3

5" and weighs 5

375” x 1

Marcasite Quartz Calcite Cluster from Russia Herkimer The reddish-brown rock consists ofThis beautiful cluster from Russia features shimmering marcasite, quartz, and calcite that fluoresces under UV light. Marcasite is made of iron sulfide, with the same chemical formula as pyrite, though it forms in a different crystal structure. It typically appears metallic and pale bronze with a bright reflective luster. This item is 2. 5 x 2 and weighs 2. 8 oz