Simple Lithology

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alkali feldspar trachyte

http://resource.geosciml.org/classifier/cgi/lithology/alkali_feldspar_trachyte

definition

Trachytoid that has a plagioclase to total feldspar ratio less than 0.1, between 0 and 5 percent quartz in the QAPF fraction, and no feldspathoid minerals. QAPF field 6.

source

LeMaitre et al. 2002

type

Resource
Concept

broader

alkali feldspar trachytic rock

narrower	alkali feldspar trachyte

in scheme

simplelithology

is primary topic of

alkali feldspar trachyte