cassiterite

Noun

Open English WordNet

Noun (1)

  1. a hard heavy dark mineral that is the chief source of tinType of mineralMade of tin, Sn
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Webster's Dictionary (1913)

Cas·sit′er·ite noun

Origin: Gr. … tin.

Mineralogy Native tin dioxide; tin stone; a mineral occurring in tetragonal crystals of reddish brown color, and brilliant adamantine luster; also massive, sometimes in compact forms with concentric fibrous structure resembling wood (wood tin), also in rolled fragments or pebbly (Stream tin). It is the chief source of metallic tin. See Black tin, under Black.

Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54

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