GRD00AFS0
I-396
Andesite
Cenozoic
0.01
-
65.5
0
Ritter 154 › Cabinet 16 › Drawer B
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Porphyritic. Abundant feldspar laths in dense brown matrix. Original label: Volcaniclastic?
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California
Sonora Pass Road
Latitude: 38.3°
Longitude: -119.6°