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Granodiorite Nodules
Field Collector: Esper Signius Larsen Jr.
Place Collected:San Luis Rey Quadrangle, Southern California
Object number: ROC21766
DescriptionRust and black flecked fine-grained plutonic igneous rock that has been formed into quail-egg sized ovoids, perhaps a fault-realted feature. They are likely composed of plagioclase, quartz, a little K-feldspar, and biotite.
In Collection(s)