GRD01VTS0
M-434
Ga-bearing Schist
Precambrian
542.0
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3850.0
0
Ritter 154 › Cabinet 24 › Drawer D
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Slight slaty cleavage. Fine- to medium-grained grey phyllosilicates, garnet porphyroblasts, and trace amounts of muscovite and quartz.
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South Dakota
Keystone
Latitude: 43.9°
Longitude: -103.4°
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