GRD00TNS0 - Geological Teaching Collection at Scripps

Record #25 of 229
GRD00TMS0 GRD00TOS0

IGSN:

GRD00TNS0

Sample ID:

S-74

Sample Type:

Porcellanite

Sample Age:

Cenozoic › Neogene › Miocene
5.3 - 23.0

Number TS:

Storage:

Ritter 154 › Cabinet 18 › Drawer N

Modifiers:

finely laminated

Notes:

Monterey Fm., small fracture with offset

Ancillary Data Notes:

Series:

Location:

California
Berkeley Hills
Latitude: 37.89°
Longitude: -122.27°

Photos:

Notes:

Micrographs:

Notes:

Cluster of quartz and opaques in brown cryptocrystalline quartz

Mag:

5.0

Polarized:

plane

Notes:

Cluster of quartz and opaques in brown cryptocrystalline quartz

Mag:

5.0

Polarized:

crossed

Notes:

Mag:

scan

Polarized:

crossed

Notes:

Mag:

scan

Polarized:

plane

Thin Sections:

GRD00TNT0: Very small amount of sample on the slide. Laminated, brown, cryptocrystalline quartz. Occasional quartz grains and clusters of fine-grained quartz and opaques. Some quartz exhibits undulose extinction. Dark brown fractures. (C. Eichler)

Documents:

N/A

References:

N/A

Geological Teaching Collection

Geological Teaching Collection

IGSN: GRD00TNS0 Sample ID: S-74 Permalink