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Listvenite |
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Listvenite
a metasomatic rock consisting of carbonates (most often ankerite), quartz, and muscovite or fuchsite, with an admixture of various minerals (talc, chlorite, actinolite, albite, tourmaline, rutile, sphene). Listvenites are bright green (owing to the fuchsite) or gray (when they contain colorless muscovite). They are formed as a result of the process of listvenitization of serpentinites and other ultrabasic and basic rock. Listvenites usually occur in the form of lenses or veinlike bodies in sheeted and slightly calcified rock, and they can form selvages around gold-bearing quartz veins. Listvenites were first discovered in the Urals and described by the German geologist G. Rose (1842). Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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