Tennantite

Tennantite

Infobox mineral
name = Tennantite
category = Mineral: sulfosalt
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caption = A sample of tennantite
formula = Cu12As4S13
molweight = 1,471.40 gm
color = Steel gray to iron-gray
habit = massive to well formed crystals
system = Cubic
twinning =
cleavage = None
fracture = Hackly
tenacity =
mohs = 3½ - 4
luster = Metallic
streak = reddish gray
polish =
refractive =
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dispersion =
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absorption =
gravity =
density = 4.65
melt =
fusibility =
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solubility =
diaphaneity = Opaque
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references =

Tennantite is a copper arsenic sulfosalt mineral. Its chemical formula is Cu12As4S13. It is found in hydrothermal veins and contact metamorphic deposits. It is grey-black, steel-gray, iron-gray or black in color. A closely related mineral, tetrahedrite (Cu12Sb4S13) has antimony substituting for arsenic and the two form a solid solution series. The two have very similar properties and is often difficult to distinguish between tennantite and tetrahedrite. Iron, zinc, and silver substitute up to about 15% for the copper site.

The mineral was named after the English chemist Smithson Tennant (1761-1815).

ee also

*Bornite
*Cuprite
*Tetrahedrite
*List of minerals
*List of minerals named after people

References

* [http://mineral.galleries.com/minerals/sulfides/tennanti/tennanti.htm Min. galleries]
* [http://www.mindat.org/min-3911.html Mindat.org]


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Look at other dictionaries:

  • Tennantite — Catégorie II : sulfures et sulfosels[1] Tennantite Mine de Tsumeb Namibie (7x7cm) …   Wikipédia en Français

  • Tennantite — Ten nant*ite, n. [Named after Smithson Tennant, an English chemist.] (Min.) A blackish lead gray mineral, closely related to tetrahedrite. It is essentially a sulphide of arsenic and copper. [1913 Webster] …   The Collaborative International Dictionary of English

  • tennantite — ● tennantite nom féminin (de S. Tennant, nom propre) Arséniosulfure naturel de cuivre et de fer, ou cuivre gris arsenical, cubique …   Encyclopédie Universelle

  • tennantite — tenantitas statusas T sritis chemija apibrėžtis Mineralas. formulė (Cu,Fe)₁₂As₄S₁₃ atitikmenys: angl. tennantite rus. теннантит …   Chemijos terminų aiškinamasis žodynas

  • tennantite — /ten euhn tuyt /, n. a mineral, copper arsenic sulfide, approximately Cu3AsS3: a copper ore and an end member of a series of solid solutions into which antimony enters to form tetrahedrite. [1830 40; after S. TENNANT; see ITE1] * * * …   Universalium

  • tennantite — noun A sulfide mineral of iron, copper and arsenic that is an ore of copper …   Wiktionary

  • tennantite — ten·nant·ite …   English syllables

  • tennantite — /ˈtɛnəntaɪt/ (say tenuhntuyt) noun a mineral, copper arsenic sulphide, Cu3AsS3, usually containing some antimony and grading into tetrahedrite; an ore of copper. {named after Smithson Tennant, 1761–1815, English chemist. See ite1} …  

  • tennantite — ˈtenən.ˌtīt noun ( s) Etymology: Smithson Tennant died 1815 English chemist + English ite : a mineral (Cu,Fe)12As4S13 that consists of a blackish lead gray sulfide of iron, copper, arsenic, and sulfur and is isomorphous with tetrahedrite …   Useful english dictionary

  • Annivite — Tennantite Tennantite Catégorie II : sulfures et sulfosels Tennantite Tsumeb Mine (Région d Oshikoto), Namibie (7x7cm) …   Wikipédia en Français

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