http://resource.geosciml.org/classifier/cgi/lithology/tonalite
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| definition | Granitoid consisting of quartz and intermediate plagioclase, usually with biotite and amphibole. Includes rocks defined modally in QAPF field 5; ratio of plagioclase to total feldspar is greater than 0.9. | ||||||
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| source | LeMaitre et al. 2002 | ||||||
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| in scheme | simplelithology original | ||||||