| GRD02R5S0 |
Gabbro
|
Amphibole plag banding, medium grained. Plag and hornblend approximately one cm in size. Moderate weathering. Opx, possibly some olivine |
California |
0 |
Ritter 154, 16 D |
| GRD02R6S0 |
Obsidian
|
Spherulitic devitrification of obsidian. Large radiating spherulites |
|
0 |
Ritter 154, 15 M |
| GRD02R7S0 |
Granodiorite
|
10 Kspar, 40 plag, 5 amphibole, 40 quartz, 5 biotite + sphene |
|
0 |
Ritter 154, 15 N |
| GRD02R8S0 |
Aa
|
Olivine bearing basalt. aa flow. Vesicular. |
Hawaii |
0 |
Ritter 154, 16 H |
| GRD02R9S0 |
Pahoehoe
|
Two large pieces. Smooth interior, indicative of a lava tube or a cast |
|
0 |
Ritter 154, 16 I |
| GRD02RAS0 |
Ankaramite
|
From University aix-marselle III, Faculte de Sciences et techniques de Saint-Jerome-Laboratorie de Petrologie |
Alabama |
0 |
Ritter 154, 16 J |
| GRD02RBS0 |
Greenschist
|
Orocopia Schist. Two green schist samples. Quartz-Muscovite-Chlorite-Staurolite-Cordierite(minor) |
|
4 |
Ritter 154, 3 H |
| GRD02RCS0 |
Ga-bearing Schist
|
Garnet mica schist, well foliated. Muscovite-Quartz-Garnet-Chlorite-Biotite. |
|
1 |
Ritter 154, 3 H |
| GRD02RDS0 |
Layered Gneiss
|
Banded Gneiss, Amphibolite Facies Quartzo-Feldspathic Protolith |
|
5 |
Ritter 154, 3 H |
| GRD02RES0 |
Ga-bearing Schist
|
Large rotated garnet porphyroblasts, approximately 1cm. Garnet-Biotite-Muscovite-Quartz |
|
4 |
Ritter 154, 3 H |
| GRD02RFS0 |
Phyllite
|
Phyllite with epidote. |
California |
3 |
Ritter 154, 3 G |
| GRD02RGS0 |
Greenschist
|
Sheared greenschist assemblage |
California |
6 |
Ritter 154, 3 G |
| GRD02RHS0 |
Schist
|
Meta-graywacke phase |
California |
1 |
Ritter 154, 3 G |
| GRD02RIS0 |
Layered Gneiss
|
Feldspar-Quartz-Biotite Large feldspars approximately 1-2cm. |
|
9 |
Ritter 154, 3 G |
| GRD02RJS0 |
Basalt
|
Dark aphanitic massive vessicular, Plagioclase, Olivine. |
|
4 |
Ritter 154, 3 F |
| GRD02RKS0 |
Basalt
|
Massive Amygdaloidal Aphanitic rock containing secondary Calcite. |
|
4 |
Ritter 154, 3 F |
| GRD02RLS0 |
Granite
|
Cummulate Tourmaline(Schorlite) bearing pegmatite. Off-white subhedral Plagioclase(1-2 cm) forming cumulate band in rock. Gray vitreous anhedral Quartz(0.5-2 cm). Light pink/yellow subhedral K-spar (1-5 mm). Black sub/euhedral Schorlite (1 mm - 1 cm) forming cummulate band adjacent to Plagioclase band. |
|
4 |
Ritter 154, 3 F |
| GRD02RMS0 |
Ankaramite
|
Ankaramite with olivine(1-5 mm), cpx(1-8 mm), and plag, black groundmass |
Sao Miguel, Azores |
4 |
Ritter 154, 3 F |
| GRD02RNS0 |
Komatiite
|
Komatiite showing diagnostic spinifex texture. Olivine, Cpx, Serpentine, Magnetite. |
|
5 |
Ritter 154, 3 F |
| GRD02ROS0 |
Rhyolite
|
Aphanitic texture. |
Mexico |
2 |
Ritter 154, 3 E |
| GRD02RPS0 |
Basalt
|
Pyroxene and Feldspar bearing Basalt. Vesicles remnant from approx 2-3 mm gas bubbles |
Washington |
3 |
Ritter 154, 3 E |
| GRD02RQS0 |
Basalt
|
Two billets. Visible feldspars. |
|
2 |
Ritter 154, 3 E |
| GRD02RRS0 |
Basalt
|
Xenolith in basalt. Two thin sections-1801-2, 1801-5. |
Hawaii |
2 |
Ritter 154, 3 E |
| GRD02RSS0 |
Diorite
|
One 1cm thick slab. Coarse grained, weathered, Plagioclase, Quartz, Hornblende, Biotite, trace K-spar apatite and sphene, minor chlorite |
Point Reyes CA, from N end of point, from the Salinian block. |
4 |
Ritter 154, 3 E |
| GRD02RTS0 |
Mafic Extrusive
|
Plagioclase and pyroxene bearing |
Oregon |
3 |
Ritter 154, 3 E |
| GRD02RUS0 |
Monzonite
|
Two hand samples and two billets |
California |
3 |
Ritter 154, 3 E |
| GRD02RVS0 |
Dacite
|
Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered |
Dacite Porphyry, Morro Bay, San Luis Obispo |
3 |
Ritter 154, 3 E |
| GRD02RVS1 |
Dacite
|
Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered |
California |
3 |
Ritter 154, 15 Q |
| GRD02RWS0 |
Basalt
|
Vesicular (~2-3 cm) Pahoehoe Basalt. One broken thin section |
Hawaii |
1 |
Ritter 154, 3 E |
| GRD02RXS0 |
Gabbronorite
|
Fine grained massive Gabbronorite. Plagioclase, Hornblende, Pyroxene. |
|
2 |
Ritter 154, 3 E |
