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stannite

 
Dictionary: stan·nite   (stăn'īt') pronunciation
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n.
A gray to black mineral, Cu2FeSnS4, having a metallic luster. Also called tin pyrites.

[Late Latin stannum, tin; see stannic + -ITE1.]


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Chemistry Dictionary: stannate
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A compound formed by reaction of tin oxides (or hydroxides) with alkali. Tin oxides are amphoteric (weakly acidic) and react to give stannate ions. Tin(IV) oxide with molten alkali gives the stannate(IV) ion

SnO2+2OH− → SnO3 2−+H2O
In fact, there are various ions present in which the tin is bound to hydroxide groups, the main one being the hexahydroxostannate(IV) ion, Sn(OH)6 2−. This is the negative ion present in crystalline 'trihydrates' of the type K2Sn2O3.3H2O. Tin(II) oxide gives the trihydroxostannate(II) ion in alkaline solutions
SnO(s)+OH−(aq)+H2O(l) → Sn(OH)3 −(aq)
Stannate(IV) compounds were formerly referred to as orthostannates (SnO4 4−) or metastannates (SnO3 2−). Stannate(II) compounds were called stannites.


WordNet: stannite
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Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: a dark gray mineral with a metallic luster that is a source of tin
  Synonym: tin pyrites

Wikipedia: Stannite
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Stannite (unknown scale)

Stannite is a mineral, a sulfide of copper, iron, and tin. The chemical formula Cu2FeSnS4. Stannite is used as an ore of tin, consisting of approximately 28% tin, 13% iron, 30% copper, 30% sulfur by weight. It is found in tin-bearing, hydrothermal vein deposits. Also known as bell metal ore. Colored blue to various shades of grey.

The name comes from the Latin for tin: stannum.

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bell metal
stannine
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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Chemistry Dictionary. A Dictionary of Chemistry. Sixth Edition. Copyright © Market House Books Ltd, 2008. All rights reserved.  Read more
WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Stannite".  Read more