GRD019AS0
W79-66
Chert
Mesozoic › Jurassic
145.5
-
201.6
1
Ritter 154 › Cabinet 18 › Drawer O
laminated,radiolarians,styolite
Dark gray chert (silicified mudstone) with white calcite veins. Laminated.
Samples W79-54 through W79-89 south of Lagonegro, Italy; all samples within the Jurassic Scisti silicei formation; see Winterer 1979 notebook, pages 34 through 41
-
Italy
south of Lagonegro
Latitude: 40.12°
Longitude: 15.77°
-
Styolite
2.5
plane
Styolite
2.5
crossed
Note the texture of the calcite in the vein as well as the texture of the quartz long the vein wall.
2.5
plane
Note the texture of the calcite in the vein as well as the texture of the quartz long the vein wall.
2.5
crossed
-
scan
crossed
-
scan
plane
GRD019AT0: Silicified mudstone containing radiolarians and opaques (organics?). Small styolite running across the thin section. Large calcite (fluid-flow?) vein cross-cutting the laminations. Quartz is slightly more coarse-grained along the edge of the vein. (C. Eichler)
N/A
N/A