tas·​ma·​nite | \ ˈtarzməˌnīt\
plural -s

Definition of tasmanite

1 : a compound of carbon, hydrogen, oxygen, and sulfur in minute reddish brown scales in shale
2 : a light-colored shaly coal that is composed largely of the compound tasmanite and yields a large quantity of petroleum on dry distillation

called also combustible shale

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History and Etymology for tasmanite

Tasmania, its locality + English -ite

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irregularly rounded

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