They lived during the Jurassic and Cretaceous periods and are fairly common fossils found throughout the world
especially the northern mountain regions
often appearing as an attractive secondary mineral on Quartz in hydrothermal vein deposits
ruby-bearing corundum is also found in various regions
before the creation of synthetic pigments
Mercedes Calcite (Chalcopyrite on Calcite) - Specimen root chakra jasper They lived during the JurassicMined from: Daye Mine, Huangshi, Hubei Province, China Description: This one of a kind Mercedes Calcite with Chalcopyrite mineral specimen from Hubei, China features a striking cluster of pale champagne to icy white calcite crystals with bold dark metallic striping across several crystal faces. The specimen has a sculptural, multi directional formation, with broad blocky calcite points, angled terminations, and frosted white crystalline growths across