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Glass inclusion in andesite plug
Field Collector: Esper Signius Larsen Jr.
Place Collected:Near Calaveras Quarry, San Luis Rey Quadrangle, Southern Calfornia
Object number: SLR 38-33
DescriptionBlack vitreous rock mostly composed of glass caused by the melting of a granodiorite inclusion in an andesite volcanic plug according to Larsen (1948) and Larsen and Switzer (1939).
In Collection(s)