Schorl
Chamber's Twientieth Century Dictionary · 1908 · p. 94
shorl, n. black tourmaline—also Shorl .— adjs. Schorlā′ceo us , Schor′lous , Schor′ly . [Ger. schörl , prob. from Sw. skör , brittle.]
Bu kavram başka kaynaklarda da geçiyor
Adair's New Encyclopedia (1923)
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
Dictionary of Science, Literature and Art (1854)
Dictionary of Science, Literature and Art (1842)
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