GRD00I3S0 - Geological Teaching Collection at Scripps

Record #17 of 70
GRD00HZS0 GRD00I7S0

IGSN:

GRD00I3S0

Sample ID:

I-736

Sample Type:

Diorite

Sample Age:

Paleozoic › Devonian
359.0 - 416.0

Number TS:

Storage:

Ritter 154 › Cabinet 15 › Drawer P

Modifiers:

Notes:

diorite (Pl-Px/Amph-Bi); probably the 390 Ma Salem gabbro-diorite

Ancillary Data Notes:

Series:

Location:

Massachusetts
Salem
Latitude: 42.5°
Longitude: -70.9°

Photos:

Notes:

Micrographs:

Notes:

Acicular crystals in quartz, orthopyroxene, biotite, and opaque oxides. Slight alteration

Mag:

5.0

Polarized:

plane

Notes:

Acicular crystals in quartz, orthopyroxene, biotite, and opaque oxides. Slight alteration.

Mag:

5.0

Polarized:

crossed

Notes:

Mag:

scan

Polarized:

crossed

Thin Sections:

GRD00I3T0: Plagioclase, biotite, orthopyroxene, sanidine, quartz, opaque oxides. Resorption and slight alteration. (C. Eichler)

Documents:

N/A

References:

N/A

Geological Teaching Collection