GRD02QZS0
Calif 1276
Dacite
Unknown
None
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1
Ritter 154 › Cabinet 29 › Drawer D
Porphyritic rhyodacite
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Collected 9/20/99
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California
Lassen, chaos crags.
Latitude: 40.52°
Longitude: -121.52°
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N/A
GRD02QZT0: Red-brown amphibole, quartz, plagioclase, biotite, opaques. Amphibole phenocrysts rimmed by opaques. Plag>Hb>Bi>Q, 30% phenocrysts
N/A
N/A