GRD0070S0
I-262
Dacite
Cenozoic › Quaternary
0.01
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2.6
0
Ritter 154 › Cabinet 15 › Drawer Q
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Hb-Plag-Bi(Phlog) Two samples with same number that may be related. Dacite and Granodiorite. One is pumiceous while the other is more crystal-rich.
Age of 28.3 +/- 2.7 ka from Lassen peak (nearby) from Turin et all 1998, GSA bulletin Vol 110
Lassen
California
Lassen, Manzanita Lake
Latitude: 40.5°
Longitude: -121.6°
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