This Specimen has been sold.
7.9" Calcite & Aragonite Stalactite Formation - Morocco
This is a truly incredible specimen of calcite and white aragonite stalactitic formations. The calcite and aragonite look to have coated iron rich mineral projections from the sloped ceiling of a cave, leaving the crystal coated matrix with a web-like appearance. Aragonite can be found seemingly bursting from the side of the specimen as well.
Stalactites form when water that seeps through rock, reaches an opening such as a cave or tunnel. Once this mineral rich water (calcite in this case) precipitates out of the rock wall/ceiling, it leaves behind a crystal as the precipitate builds with each drop of water. Stalagmites are likely to form from this process, for the drops from the ceiling will still contain high mineral content, typically depositing a precipitate that will continue to build as long as water continues to flow in this location.