• synonyms


  1. a brown or black mineral, tin dioxide, SnO2, that crystallizes in the tetragonal system; tinstone: the principal ore of tin.
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Origin of cassiterite

1855–60; < Greek kassíter(os) tin + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for cassiterite

Historical Examples

  • Cassiterite, the principal tin ore, would have to be roasted.

    The A B C of Mining

    Charles A. Bramble

  • Our new ledge is a jim-dandy; and seem' as I cheated the woman out of her cassiterite, I'm bound to make it good in yellow gold.

    The Trail of a Sourdough

    May Kellogg Sullivan

  • The original home of cassiterite is in veins closely related to granitic rocks.

  • Cassiterite is practically insoluble and is very resistant to decomposition by weathering.

  • Stannite probably alters to "wood tin," a fibrous variety of cassiterite.

British Dictionary definitions for cassiterite


  1. a black or brown mineral, found in igneous rocks and hydrothermal veins. It is a source of tin. Composition: tin oxide. Formula: SnO 2 . Crystal structure: tetragonalAlso called: tinstone
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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