Simple Lithology
gneiss
http://resource.geosciml.org/classifier/cgi/lithology/gneiss
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definition | Foliated metamorphic rock with bands or lenticles rich in granular minerals alternating with bands or lenticles rich in minerals with a flaky or elongate prismatic habit. Mylonitic foliation or well developed, continuous schistosity (greater than 50 percent of the rock consists of grains participate in a planar or linear fabric) precludes classification with this concept. |  |
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source | Neuendorf et al. 2005 | |
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in scheme | simplelithology | |||||||||
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is primary topic of | gneiss& properties=isPrimaryTopicOf | |||||||||