Simple Lithology
tephritoid
http://resource.geosciml.org/classifier/cgi/lithology/tephritoid
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definition | Fine grained igneous rock than contains less than 90 percent mafic minerals, between 10 and 60 percent feldspathoid mineral in the QAPF fraction and has a plagioclase to total feldspar ratio greater than 0.5. Includes rocks classified in QAPF field 13 and 14 or chemically in TAS field U1 as basanite or tephrite. |  |
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narrower |
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source | LeMaitre et al. 2002 | |
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broader |
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in scheme | simplelithology | |||||||||||||||||
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is primary topic of | tephritoid& properties=type,definition,isPrimaryTopicOf | |||||||||||||||||