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Aplitic Granodiorite
Field Collector: Esper Signius Larsen Jr.
Place Collected:Close to Elsinore, Elisnore Quadrangle, Southern California
Object number: ROC21685
DescriptionPlutonic, fine-grained (majority of grains ≤ 1 mm), light grey rock consisting of 40% plagioclase (<1-5 mm), 30% light-grey quartz (<1 mm), 20% light brown K-feldspar (< 1 mm), 7% black biotite (<1 mm), and 3% black hornblende (< 1-3 mm).
In Collection(s)