Schorl (noun) Definition, Meaning & Examples

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noun
  1. a black tourmaline.
noun
  1. a black tourmaline consisting of a borosilicate of sodium, iron, and aluminium. Formula: NaFe 3 B 3 Al 3 (Al 3 Si 6 O 27)(OH) 4
Schorl (noun) Definition, Meaning & Examples

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