GRD0406S0
19-54
Granodiorite
Precambrian › Proterozoic › Paleoproterozoic › Statherian
1600.0
-
1800.0
0
Ritter 154 › Cabinet 29 › Drawer J
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Boulder Creek Granodiorite. Somewhat foliated. Very low K-spar content, Tonalite composition. Hornblende bearing, with minor Epidote, Sphene, Apatite. Trace Allanite and Zircon.
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Boulder Creek Batholith
Colorado
about 3/4 mile W of Sunnyside on 119
Latitude: 40.0023°
Longitude: -105.3929°
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N/A
N/A
USGSProfPaper1101.pdf
(15.2 MB)
Specimen 106 - Modal analysis table 1, p14. Chem analysis table 10 p 42.