(redirected from cassiterites)
Also found in: Thesaurus, Encyclopedia.


A light yellow, red-brown, or black mineral, SnO2, that is an important tin ore. Also called tinstone.

[French cassitérite, from Greek kassiteros, tin.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) 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
[C19: from Greek kassiteros tin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(kəˈsɪt əˌraɪt)

a brown or black mineral, tin dioxide, SnO2, usu. found as fibrous masses or placer deposits; the chief ore of tin.
[1855–60; < Greek kassíter(os) tin + -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cassiterite - a hard heavy dark mineral that is the chief source of tin
atomic number 50, Sn, tin - a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The specimen photos, by about 25 people, are predictably excellent; many, of course, have been published before, but who can complain about seeing, all over again, such magnificent things as the 3.6-cm Oruro andorite/stannite on page 26; the 9.2-cm Tasna bismuthinite on page 45; the 3.1-cm spherical Llallagua vauxite on page 50; the thumbnail-size Colquechaca canfieldite on page 67; the surprising 8.2-cm Corocoro copper on page 79; the stunning cassiterites, ferberites, wavellites and apatites on several pages; and of course the great phosphophyl-lites, including Andy Seibel's breathtaking 5.2-cm matrix specimen on the front cover?
The place in question is an entirely landlocked, mountainous, somewhat mysterious-seeming country which boasts a long mining history and has a secure reputation for turning out world-class specimens of--oh, let's see--metallic species (andorite, pyrarygrite, stannite, franckeite, cylindrite), other primary ores (cassiterite, ferberite), and glamorous phosphates (phosphophyl-lite, paravauxite, vivianite, ludlamite) such as we have long admired and lusted after.
Cassiterite crystals found in miarolitic cavities differ markedly in habit from other cassiterites found in the adjacent stanniferous, zoned pegmatites and in the Krantzberg mine (see Table 2).
While Jack loves the high luster on his stibnites, cassiterites and especially his golds, he is accepting of the satiny luster on his benitoites, barites and rhodonites.
China was still churning out minerals, the newest being lustrous black cassiterites from Ximeng, Yunnan Province.
Liu of AAA Liu's Minerals (Franz[ddot{o}] Allee 24, 72072 T[ddot{u}]bingen, Germany), had still more transparent cassiterites from Yunnan, as well as some major large Lushi mine stibnite groups; sharp black stannite crystals to 1 cm with arsenopyrite; and a lot more Chinese stuff.
Herzenberg's catalog lists 46 specimens from Cerro Rico de Potosi, including one alunite, 27 cassiterites, two sphalerites, ten stannites, two jamesonites and two wolframites (but no phosphophyllite, which was not recognized at Potosi until a year after his death).
There were 197 cuprites (including 48 single crystals); 311 cassiterites (including 154 single crystals), many from Cornwall; 500 cerussites (including 345 single crystals), obtained, he says, from mineral dealers such as Mawe, Forster, Fichtel and Mohr, from localities in Derbyshire, the Hungarian Bannat and Siberia; no less than 246 wulfenites (of which 197 were single crystals); 117 specimens of crocoite, probably Russian (including 91 single crystals); and 54 specimens of bournonite, which Bournon discovered and had called endellionite until Robert Jameson formally named the new species after him.
He sent 19 specimens of pyrite, 19 of copper minerals, 20 cassiterites, four lead minerals, three iron ores, 12 quartz crystals, four examples of steatite and two of actinolite.
For example, the native gold specimens were accompanied by an entire suite of minerals from Upper and Lower Hungary, and the good cassiterites were followed by a general Cornish suite.
The UN Panel had limited time at its disposal, and "given the high number of natural resources found in Congo", it concentrated on a few minerals - primarily coltan, diamonds, gold, cassiterite, and forest and agricultural products such as timber, coffee, ivory, wildlife and other forms of wealth, primarily taxes.
Finally, I was very impressed by some cassiterite from Xu Bao Diang, Piugwu, Sichuan.