Category:Gneiss

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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 Stainzer Hartgneis, Austria.

Subcategories

This category has the following 4 subcategories, out of 4 total.

L

[×] Lewisian Gneiss‎ (63 F)

P

[+] Peninsular Gneiss‎ (1 C, 3 F)

S

[×] Gneiss samples‎ (39 F)
[×] Stébelnatá rula‎ (7 F)

Media in category "Gneiss"

The following 121 files are in this category, out of 121 total.

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Metamorphic rocks