GRD001VS0
I-70
Rhyolite
Unknown
None
-
2
Ritter 154 › Cabinet 15 › Drawer F
fine grained
Thin sections look very different from one another.
-
Granite Mtns
California
Granite Mtns, Amboy
Latitude: 35.5°
Longitude: -116.7°
-
Photo of GRD001VT0. Large plagioclase.
2.5
crossed
Photo of GRD001VT1. Fine grained feldspar, quartz, amphibole, and sphene.
2.5
crossed
Scan of GRD001VT1
scan
crossed
Scan of GRD001VT0
scan
crossed
GRD001VT0: Plagioclase (albite and polysynthetic twinning), K-spar (mottled extinction), small cluster of cubic oxides. (C. Eichler)
GRD001VT1: Plagioclase (albite and polysynthetic twinning), K-spar (microcline twinning), quartz (undulatory extinction), amphibole, sphene. Dark patches are amphibole and oxide-rich deposits. (C. Eichler)
N/A
N/A