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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

What Whitby jet

I comes from the a relative of monkey puzzle tree (araucaria araucana)

Imitations

Glass and plastic


Vulcanized rubber


Coal anthracite


Bog oak more brown than black