1) An ore of tin 2) Copper mineral 3) Mineral 4) Tin mineral 5) Tin pyrites
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1) Tin ore
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https://www.crosswordclues.com/clue/stannite
Stannite is a mineral, a sulfide of copper, iron, and tin. The chemical formula Cu2FeSnS4. Zinc commonly occurs with the iron and trace germanium may be present. Stannite is used as an ore of tin, consisting of approximately 28% tin, 13% iron, 30% copper, 30% sulfur by mass. It is found in tin-bearing, hydrothermal vein deposits occurring with cha...
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http://en.wikipedia.org/wiki/Stannite
[ion] The stannite ion is Sn(OH)3−, or similar. There are stannite compounds, for example, sodium stannite, Na2SnO2. Stannite ion can be formed by adding strong base to stannous hydroxide. Stannite ion is a strong reducing agent; also, it may disproportionate to tin metal plus stannate ion. ...
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http://en.wikipedia.org/wiki/Stannite_(ion)
• (n.) A mineral of a steel-gray or iron-black color; tin pyrites. It is a sulphide of tin, copper, and iron.
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http://thinkexist.com/dictionary/meaning/stannite/
a sulfide mineral, chemical formula Cu2FeSnS4, that is an ore of tin. It is ordinarily found associated with other sulfide minerals in tin veins, as ...
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http://www.britannica.com/eb/a-z/s/153
Stannite or tin pyrites is a sulphostannate of copper and iron found in tin deposits in Cornwall.
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http://www.probertencyclopaedia.com/browse/HS.HTM
[
n] - a dark gray mineral with a metallic luster that is a source of tin
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http://www.webdictionary.co.uk/definition.php?query=stannite
tin pyrites noun a dark grey mineral with a metallic luster that is a source of tin
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https://www.encyclo.co.uk/local/20974
a mineral, iron-black to steel-gray in color, with a metallic luster, copper iron tin sulfide, CuFeSnS: an ore of tin. Also called
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https://www.infoplease.com/dictionary/stannite
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