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Archiu:Quarzporphyr.jpg

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Summary

Description
English: Rhyolite or quartzporphyry ; Löbejün near Halle (Saale); Permian
Français : Rhyolite de Löbejün près de Halle (Saale). Quartz (sombre car transparent) et feldspath (rose clair) visibles. Permien
Deutsch: Rhyolith oder Quarzporphyr; Löbejün bei Halle (Saale)

Alter: Perm

Man erkennt die feinkörnige rötliche Grundmasse. Darin befinden sich Einsprenglinge aus Kalifeldspat (rosa) und aus Quarz. Letztere erscheinen wegen der umgebenden Grundmasse dunkel, sind aber eigentlich farblos.
Date 7/03/ 2006 (CET)
Source de:wikipedia
Author Gescanntes Handstück von Grabenstedt

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GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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This licensing tag was added to this file as part of the GFDL licensing update.

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actual23:32 15 gin 2022Miniatura de la versió de 23:32 15 gin 2022878 × 594 (134 kB)wikimediacommons>Ulfbastelscale orient. and dim. fixed

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