Fossiilikiteitä
Fossiilikiteitä, sometimes referred to as fossil gems or ancient crystals, are naturally occurring mineral formations that have undergone a process of fossilization. This means that organic material, such as bone or shell, has been replaced over geological time by minerals, often silica or calcite, in a process called permineralization. The original structure of the organic material is preserved, but it is now composed of inorganic crystalline material.
These formations can occur in various environments where rapid burial and mineral-rich groundwater are present. Common
The appearance of fossiilikiteitä can vary greatly depending on the original organic material and the minerals