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These are easily split along the layers to expose the fossils
Origin: Pfungstadt
Additional information: In 1905
This single crinoid specimen is a snapshot to study and appreciate the beauty and scientific significance of these ancient crinoids
The petrification process takes place underground when a tree is buried under sediment and can take millions of years
SOLD | Aragonit-Schale | Mexiko Fine minerals These are easily split alongOrigin: Mexico Size: H10cm L73. 5cm W42. 5cm Weight: 8. 3kg Description: An aragonite bowl consisting of a variety of beige and cream tones. Additional information: Aragonite, widely distributed mineral, the stable form of calcium carbonate (CaCO3) at high pressure. It differs from calcite, the more common form of calcium carbonate, in its greater hardness and higher specific gravity. Aragonite is always found in deposits formed near the earth's
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