File:2020-02-25-0013 macro restite leucogranite.jpg

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Captions

Captions

Macroscopic rock leucogranite (white) and restite (black) due to continental partial melting, Limousin, Dampniat, France

Summary

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Description
Français : Echantillon macroscopique de leucogranite (blanc) et de restite (noir) suite à une fusion partielle continentale, en profondeur, un gneiss, roche métamorphique fond partiellement, les minéraux blancs qui le composent fondent (Quartz, feldspaths alcalins et plagioclases) pour donner naissance à un magma local très riche en silice qui recristallise en leucrogranite. Les minéraux noirs comme le mica noir biotite restent solides et s'accumulent les uns avec les autres pour former les "boules" noires de restite.
Date
Source Own work
Author Laurentb64
Camera location45° 10′ 34.68″ N, 1° 37′ 31.22″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current14:44, 25 February 2020Thumbnail for version as of 14:44, 25 February 20203,848 × 2,504 (5.53 MB)Laurentb64 (talk | contribs)User created page with UploadWizard

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