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cassiterite

[kuh-sit-uh-rahyt] /kəˈsɪt əˌraɪt/
noun
1.
a brown or black mineral, tin dioxide, SnO 2 , that crystallizes in the tetragonal system; tinstone: the principal ore of tin.
Origin of cassiterite
1855-1860
1855-60; < Greek kassíter(os) tin + -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for cassiterite

cassiterite

/kəˈsɪtəˌraɪt/
noun
1.
a black or brown mineral, found in igneous rocks and hydrothermal veins. It is a source of tin. Composition: tin oxide. Formula: SnO2. Crystal structure: tetragonal Also called tinstone
Word Origin
C19: from Greek kassiteros tin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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