This Specimen has been sold.
2.4" Fascinating Cave Calcite Mushroom Stalactite - Wenshan Mine
This is a fascinating cave calcite stalactite formation with a mushroom-like appearance. It is part of a new find at the Wenshan zinc mines in the Yunnan Province of China. The base of the specimen has been cut flat for aesthetic presentation.
Cave calcite is not actually calcite but is formed from aragonite crystals. Calcite and aragonite are both carbonates with the same chemical formula (CaCO3), but different crystal structures and symmetries. Cave calcite forms underground due to groundwater deposition. While it often forms stalactites and stalagmites it can also form unique, branching, tree-like structures. These beautiful formations are sometimes known as ‘floss ferri’ (flowers of iron) and frostwork.