Category:Gneiss
From Wikimedia Commons, the free media repository
日本語: 片麻岩
한국어: 편마암
Gneiss is a medium to coarse-grained banded rock formed as a result of high grade regional metamorphism. It is characterised by a layered appearance caused by the minerals from quartzo-feldspathic minerals in discontinuous layers. The ferromagnesian minerals are commonly biotite and/or hornblende with pyroxene being less common. Garnet is often present as an accessory mineral. A good example is Gneiss from Stainz, Austria.
Media in category "Gneiss"
The following 46 files are in this category, out of 46 total.
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