GRD00W5S0
W64-19
Dolostone
Precambrian › Proterozoic › Neoproterozoic
542.0
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1000.0
1
Ritter 154 › Cabinet 18 › Drawer C
pisolite,pisoids
Medium-sized pisoids composed of dark grey dolomite. W64-19 is distinct from W64-19a. Original label: Pisolite dolomite. Beck Spring Fm., Pahrump Group. Late Precambrian. Float from wash. April 1964.
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California
1 mile southeast of Saratoga Springs, San Bernardino County
Latitude: 40.2°
Longitude: -111.5°
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Pisoid with sparrite core
2.5
plane
Pisoid with sparrite core
2.5
crossed
-
scan
crossed
-
scan
plane
GRD00W5T0: Medium-sized pisoids composed of dark grey dolomite. Sparrite matrix with nice cleavage. Some broken pisoids. Some with sparrite cores. Most are circular. Thin sparrite veins. Some recrystallization. (C. Eichler)
N/A
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