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crookesite

[ krook-sahyt ]

noun

  1. a rare mineral, selenide of copper, thallium, and silver, (Cu, Tl, Ag) 2 Se, occurring in steel-gray, compact masses.

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Word History and Origins

Origin of crookesite1

1865–70; after Sir W. Crookes; -ite 1

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Crookes dark spaceCrookes lens

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