http://resource.geosciml.org/classifier/cgi/lithology/quartz_alkali_feldspar_syenite
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definition | Alkali feldspar syenitic rock that contains 5 to 20 percent quartz and no feldspathoid in the QAPF fraction. QAPF field 6*. | ||||||
source | LeMaitre et al. 2002 | ||||||
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in scheme | simplelithology original |