GRD021GS0
M-103
Layered Gneiss
Precambrian › Proterozoic
542.0
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2500.0
0
Camp Elliott
fine-grained
Medium-sized sample of fine to medium-grained gneiss composed of biotite-quartz-plagioclase. Thick bands of biotite and amphibole with thin continuous and discontinuous bands of quartz and plagioclase (minor). Some green mineral (vesuvianite?) in the leucocratic layers.
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California
Boullion Mountains, 8 miles south of Amboy
Latitude: 34.429°
Longitude: -115.776°
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