Marcasite Quartz Calcite Cluster from Russia $100-$150 dendritic fossils look like plants

dendritic fossils look like plants but are actually deposits of manganese oxide on limestone that has crystallized into a branch pattern that looks similar to a plant

Stromatolites are layered colonial sedimentary structures predominantly formed by photosynthetic microorganisms

Once associated with lead and zinc mining

This item is 2“ x 1

Marcasite Quartz Calcite Cluster from Russia $100-$150 dendritic fossils look like plantsThis 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. 25 and weighs 3. 65 oz