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3 Cards in this Set
- Front
- Back
Jet is what |
A form of fossilized wood. Buried in muddy sediment on see floor or stagnate swaps. At increased temperature in oxygen depleted conditions. Some times the wood structure can be seen |
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What Whitby jet |
I comes from the a relative of monkey puzzle tree (araucaria araucana) |
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Imitations |
Glass and plastic Vulcanized rubber Coal anthracite Bog oak more brown than black |