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

[French cassitérite, from Greek kassiteros, tin.]


(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]


(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]
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
References in periodicals archive ?
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.
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.
55-kg meteorite from Aigle in France, almost certainly obtained directly from Jean-Baptiste Biot, who had written his famous report on the first recorded fall of a meteorite in 1806; suites of silvers, calcites, cassiterites and fluorites etc.
They would be top-class cassiterites if their edges were not conspicuously abraded from their many years of adventures.
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).
Chinese cassiterites have become instant classics in recent years, and several localities are already known, the latest being Xianghuapu, Hunan, reported by Jeff Scovil in the Mineralogical Record (vol.
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.