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GeoWorld Group
known for their fibrous or bladed crystal habits and rich chemical makeup primarily composed of calcium
After several weeks the total amount of good quality specimens collected was about 200-300
well-defined aquamarine crystal set prominently across a feldspar-rich matrix
Which causes their appearance to differ from those of other fossilized specimens
Belemnite - Fossil yooperlites GeoWorld GroupMined from: Buttenheim Clay Pit, Franconia (Bavaria), Germany Era: Jurassic Period (Lower Jurassic, Toarcian Stage) Geological Age: Approximately 180190 million years old Description: Belemnites are the fossilized internal guards of extinct squid like cephalopods that lived in ancient seas during the Jurassic. Specimens from the Buttenheim Clay Pit in Franconia are particularly well known for their preservation within fine grained marine sediments,
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