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Crossword clue: a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite

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thorite 7 letters wn-def

a radioactive mineral consisting of thorium silicate; it is a source of thorium that is found in coarse granite

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A mineral of a brown to black color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium.