# Rickardite

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> Markdown URL: https://mediated.wiki/source/Rickardite.md
> Source: https://en.wikipedia.org/wiki/Rickardite
> Source revision: 1140730389
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{{Infobox mineral
| name        = Rickardite
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| image       = Rickardite-D10104b.jpg
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| caption     = Rickardite on tellurium
| category    = [Telluride mineral](/source/Telluride_mineral)
| formula     = Cu<sub>7</sub>Te<sub>5</sub>
| IMAsymbol   = Rkd<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3 |pages=291–320|doi=10.1180/mgm.2021.43 |bibcode=2021MinM...85..291W |s2cid=235729616 |doi-access=free}}</ref>
| molweight   = 
| strunz      = 2.BA.30
| system      = [Orthorhombic](/source/Orthorhombic)
| class       = Dipyramidal (mmm) <br/>[H-M symbol](/source/H-M_symbol): (2/m 2/m 2/m)
| symmetry    = ''Pmmn''
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| color       = Red-violet (fresh), darkens
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| mohs        = {{frac|3|1|2}}
| luster      = Metallic
| streak      = Red
| diaphaneity = Opaque
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}}

'''Rickardite''' is a [telluride mineral](/source/telluride_mineral), a copper telluride (Cu<sub>7</sub>Te<sub>5</sub>)<ref name=Mindat>[http://www.mindat.org/min-3417.html Mindat]</ref> or Cu<sub>3-x (x = 0 to 0.36)</sub>Te<sub>2</sub>.<ref name=HBM>[http://rruff.geo.arizona.edu/doclib/hom/rickardite.pdf Handbook of Mineralogy]</ref> It was first described for an occurrence in the Good Hope Mine, Vulcan district, [Gunnison County, Colorado](/source/Gunnison_County%2C_Colorado), US,<ref name=Webmin>[http://www.webmineral.com/data/Rickardite.shtml Webmineral]</ref> and named for mining engineer [Thomas Arthur Rickard](/source/Thomas_Arthur_Rickard) (1864–1953).<ref name=Mindat/>  It is a low temperature hydrothermal mineral that occurs associated with [vulcanite](/source/vulcanite), [native tellurium](/source/Tellurium), [cameronite](/source/cameronite), [petzite](/source/petzite), [sylvanite](/source/sylvanite), [berthierite](/source/berthierite), [pyrite](/source/pyrite), [arsenopyrite](/source/arsenopyrite) and [bornite](/source/bornite).<ref name=HBM/>

==See also==
* [List of minerals](/source/List_of_minerals)

==References==
{{Reflist}}
*D. M. Chizhikov and V. P. Shchastlivyi, 1966, ''Tellurium and Tellurides'', [Nauka Publishing](/source/Nauka_(publisher)), Moscow 

Category:Copper(I,II) minerals
Category:Telluride minerals
Category:Orthorhombic minerals
Category:Minerals in space group 59
Category:Minerals described in 1903

{{mineral-stub}}

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Adapted from the Wikipedia article [Rickardite](https://en.wikipedia.org/wiki/Rickardite) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Rickardite?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.