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Duotone bay — asphalt brief on the left, yellow-folded service sheet on the right.
" Pyritization typically occurs in low-oxygen environments where the decay of organic matter is slow
They had a hard
pale blue color with a well-defined hexagonal crystal form
Colored by traces of nickel
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Dinosaur Bone Cross-Section - Fossil Specimen Utah dinosaur bone " Pyritization typically occurs inMined from: Morrison Formation, Utah, U. S. A. Era: Mesozoic Geological Age: 155148 mya Description: This one of a kind dinosaur bone cross section from Utah has a broad oval cut face with a preserved ring of porous bone texture around the edge and mineral filled structure through the center. The surface shows tan, cream, brown, rust, grey, and darker mineral areas, with the rough natural outer bone left visible along the sides. The quarter in the
US$ 80.00
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US$ 350.00