Mineralogy Enquires - Amber. A fossilised natural plant resin. Hence it canot be precisely described as most minerals, and but for its gemmological uses, would probably not be classified as a mineral at all. Widely distributed through the World. It may also be transported and redeposited, e.g. Baltic amber found on the Norfolk coast of England.
Smaller amounts occur in various coal deposits world wide.
In England amber has also been found in small amounts in the London clay and possibly the chalk of the south coast. Siberian amber has been dated at between 78 - 115Ma. The famous Baltic amber blue earth zone is thought to be late Eocene to to early Oligocene, ie 35 - 40 million years old. Mexican amber from Chiapashas been dated at 22 - 26 million yearsold. Sicilian amber is thought to be 30 million years old, and Romanian 30 -40.