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Gneiss
Field Collector: Esper Signius Larsen Jr.
Place Collected:Near Rubidoux Mountain, Elsinore Quadrangle, Southern California
Object number: El 38-260
DescriptionBlack and white foliated rock. Foliations are ~1-2 mm wide. White regions are composed of plagioclase and quartz, black regions are composed of hornblende, chlorite, and lesser amounts of epidote and clinopyroxene.
In Collection(s)