GRD001XS0 - Geological Teaching Collection at Scripps

Record #15 of 220
GRD001TS0 GRD001YS0

IGSN:

GRD001XS0

Sample ID:

I-72

Sample Type:

Syenite

Sample Age:

Precambrian › Proterozoic
542.0 - 2500.0

Number TS:

Storage:

Ritter 154 › Cabinet 15 › Drawer C

Modifiers:

Euhedral sphene,coarse grained

Notes:

Ancillary Data Notes:

See T Theodore (2007) USGS bulletin 2160, indicates both proterozoic and mesozoic intrusions present in Old Dad Mountains

Series:

Old Dad Mtns

Location:

California
Old Dad Mtns, Amboy
Latitude: 35.2°
Longitude: -115.9°

Photos:

Notes:

Micrographs:

Notes:

Altered potassium feldspar

Mag:

2.5

Polarized:

plane

Notes:

Mag:

2.5

Polarized:

crossed

Notes:

Mag:

scan

Polarized:

crossed

Thin Sections:

GRD001XT0: Microcline (altered) K-spar, amphibole, trace plag, minor amounts of biotite, some with zircon inclusions, minor amount of opaques. (C. Eichler)

Documents:

N/A

References:

N/A

Geological Teaching Collection

Geological Teaching Collection

IGSN: GRD001XS0 Sample ID: I-72 Permalink