# Fenite

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> Markdown URL: https://mediated.wiki/source/Fenite.md
> Source: https://en.wikipedia.org/wiki/Fenite
> Source revision: 1254297160
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

thumb|Fenite from Russia
'''Fenite''' is a [metasomatic](/source/metasomatism) alteration associated particularly with [carbonatite](/source/carbonatite) intrusions and created, very rarely, by advanced [carbon dioxide](/source/carbon_dioxide) alteration (carbonation) of [felsic](/source/felsic) and [mafic](/source/mafic) rocks. It is characterised by the presence of alkali feldspar, sodic pyroxene and sodic amphibole. Fenite alteration is known, but restricted in distribution, around high-temperature metamorphic [talc carbonate](/source/talc_carbonate)s, generally in the form of an aureole around [ultramafic rock](/source/ultramafic_rock)s. Such examples include [biotite](/source/biotite)-rich zones, [amphibolite](/source/amphibolite)-[calcite](/source/calcite)-[scapolite](/source/scapolite) alteration and other unusual [skarn](/source/skarn) assemblages. The process is called '''fenitization'''. 

The [type locality](/source/Type_locality_(geology)) for fenite is the [Fen Complex](/source/Fen_Complex) (Norwegian: Fensfeltet) in [Nome](/source/Nome%2C_Norway), [Telemark](/source/Telemark), [Norway](/source/Norway).<ref>{{cite web |title=Fen Complex, Nome, Telemark, Norway |url=http://www.mindat.org/loc-14357.html |work=Mindat |accessdate=10 June 2013}}</ref>

== References ==
{{Reflist}}

==External links==
* [https://web.archive.org/web/20131202221253/http://www.umanitoba.ca/science/geological_sciences/faculty/arc/fenite.html University of Manitoba - Fenite]

Category:Metamorphic rocks

{{Metamorphic-rock-stub}}

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