View source for Mcbirneyite

{{Infobox mineral
| name        = Mcbirneyite
| category    = [[Vanadate mineral]]s
| boxwidth    =
| boxbgcolor  =
| image       =
|   imagesize   =
|   alt         =
|   caption     =
| formula     = Cu<sub>3</sub>(VO<sub>4</sub>)<sub>2</sub>
| strunz      = 08.AB.35
| dana        = 38.3.10.1
| symmetry    = <u style="text-decoration:overline">1</u> - Triclinic
| Z           = 1
| molweight   = 420.52 g/mol
| color       = dark grey or black
| habit       = 
| system      = [[Triclinic crystal system|Triclinic]]
| cleavage    = 
| mohs        = 1½
| luster      = metallic
| streak      = greyish black
| diaphaneity = opaque
| density     = 4.47 g/cm<sup>3</sup>
| refractive  = 
| birefringence = 
| 2V          = 
| solubility  = 
| alteration  = 
| references  = <ref name="WebMineral">{{WebMineral-ref | name = Mcbirneyite | url = http://webmineral.com/data/Mcbirneyite.shtml | accessdate = 2009-12-02}}.</ref><ref name="Mindat">{{MinDat-ref | name = Mcbirneyite | id = 2611 | accessdate = 2009-12-02}}.</ref><ref>{{citation | last = Coing-Boyat | first = J. | year = 1982 | title = Structure de la variété ordinaire, triclinique, de l'orthovanadate de cuivre(II), Cu<sub>3</sub>(VO<sub>4</sub>)<sub>2</sub> | journal = Acta Crystallogr., Sect. B: Struct. Sci. | volume = B38 | issue = 5 | pages = 1546–48 | doi = 10.1107/S0567740882006323}}.</ref>
}}

'''Mcbirneyite''' is a [[vanadate mineral]], a [[Mixed oxide|mixed]] [[vanadium]] and [[copper]] [[oxide]], with formula Cu<sub>3</sub>(VO<sub>4</sub>)<sub>2</sub>.

The [[type specimen]] was discovered at the Izalco volcano ({{coord|13.813|N|89.633|W|type:mountain|alt={{nowrap|13°&thinsp;48′&thinsp;47″&thinsp;N}}, {{nowrap|89°&thinsp;37′&thinsp;59″&thinsp;W}}}}), [[El Salvador]], in 1984.<ref name="WebMineral"/><ref name="Mindat"/> It has also been found at the Tolbachik volcano ({{coord|55.830|N|160.330|E|type:mountain|alt={{nowrap|55°&thinsp;49′&thinsp;48″&thinsp;N}}, {{nowrap|160°&thinsp;19′&thinsp;48″&thinsp;E}}}}) in Kamchatka in the [[Russia]]n Far East.<ref name="Mindat"/>

Mcbirneyite is named after Alexander Robert McBirney (born 1924), a vulcanologist at the University of Oregon.<ref name="WebMineral"/>

==References==
{{reflist}}

[[Category:Copper minerals]]
[[Category:Four-coordinate vanadate minerals]]

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