GRD01ABS0
W79-97
Authigenic Minerals
Mesozoic › Jurassic
145.5
-
201.6
1
Ritter 154 › Cabinet 18 › Drawer O
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Gray chert; Two generations of dolomite crystals in thin-section.
Samples W79-87 through W79-99 see Winterer 1979 notebook, pages 42 through 46
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Italy
Approximately 2 km from Pignola
Latitude: 40.57°
Longitude: 15.78°
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Small brown prismatic dolomite surrounded by rounded larger dolomite.
5.0
plane
Small brown prismatic dolomite surrounded by rounded larger dolomite.
5.0
crossed
-
scan
crossed
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scan
plane
GRD01ABT0: Three populations of dolomite. One population is composed of large, rounded dark brown dolomite rhombs in cryptocrystalline quartz. The second population is composed of small, dark, prismatic rhombs. Another population of small rhombs are clear and prismatic (calcite?). (C. Eichler)
N/A
N/A