Item talk:Q41649
From geokb
Mindat Description
A gabbroid composed of 10-90% Ca-dominant plagioclase and >5% clinopyroxene
Geoscience Ontology Description
Gabbroic rock that contains between 0 and 5 percent quartz and no feldspathoid mineral in the QAPF fraction. Includes rocks defined modally in QAPF Field 10 as gabbro. Note that this category includes gabbro (sensu stricto) of LeMaitre et al. 2002, but is broader, including the other rock types defined by orthopyroxene-clinopyroxene-olivine-hornblende mineral ratios.
