Advanced Search
Chloritized Gabbro
Field Collector: Esper Signius Larsen Jr.
Place Collected:San Luis Rey Quadrangle, Southern California
Object number: ROC21776
DescriptionFine grained (grains < 3 mm) dark grey rock consisting mostly of plagioclase and lesser amounts of quartz in a black matrix consisting of hornblende and lesser biotite.
In Collection(s)