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Dumortierite
Field Collector: Esper Signius Larsen Jr.
Place Collected:Temescal Wash Corona Quadrangle, Southern California
Object number: ROC21726
DescriptionLight grey plutonic coarse-grained (>5 mm) igneous rock consisting mostly of light-grey-white quartz and plagioclase with accessory amounts of pink and needle-like black tourmaline.
In Collection(s)