GRD010SS0

W64-18

Pisolitic Limestone

Precambrian
542.0 - 3850.0

1

Ritter 154 › Cabinet 18 › Drawer C

graded bedding

Pisolites becoming finer upward. Small grey sample. Original label: Pisolitic dolomite, Beck Spring formation, Pahrump Group, float in wash, April 1964.

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California
About 1 mile southeast of Saratoga Springs, Ibex Mountains, San Bernardino County
Latitude: 35.7°
Longitude: -116.4°

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Edge of a pisoid which borders dolomite rhombs in calcite

5.0

plane

Edge of a pisoid which borders dolomite rhombs in calcite

5.0

crossed

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scan

crossed

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scan

plane

GRD010ST0: Occasional ooids with faint internal structure. Rounded sparry calcite with nice cleavage in the center of some pisoids. Large patches of dolomite rhombs in calcite. Portions of the slide are micritic. (C. Eichler)

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