| GRD028SS0 |
Basalt
|
Dark, fine-grained sparsely porphyritic basalt with occasional very small euhedral to subhedral crystals. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. |
Indian Ocean |
1 |
Ritter 154, 34 A |
| GRD028TS0 |
Basalt
|
Dark, fine-grained basalt. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. |
Indian Ocean |
2 |
Ritter 154, 34 A |
| GRD028US0 |
Basalt
|
Dark, fine-grained basalt with occasional euhedral to subhedral crystals. Fe-Mn crust on sample. Billet. Original label: 14 August, 1968. |
Indian Ocean |
1 |
Ritter 154, 34 A |
| GRD028XS0 |
Basalt
|
Large (~10x9x11 cm) sample; Dark, fine-grained porphyritic basalt; occasional euhedral to subhedral feldspar crystals and subhedral olivine crystals; Sample has had cores drilled in three places. |
Indian Ocean |
0 |
Ritter 154, 34 B |
| GRD029AS0 |
Basalt
|
Two very large cut samples (~21x11x7 cm and ~11x8x5 cm) with two smaller pieces. Black, porphyritic basalt with a glassy surface. White feldspar and green olivine crystals visible. Fe-stained bottom. Original label: 21 August, 1968. Basalt. SiO2 ~51.0, TiO2 ~1.10, Na2O ~2.76, K2O ~0.18, P2O5 ~0.10. |
Indian Ocean |
2 |
Ritter 154, 34 B |
| GRD029DS0 |
Basalt
|
Small cut sample of vesicular porphyritic basalt; feldspar and pyroxene crystals are visible in the sample. White rind on sample. Billet and billet pieces. Original label: 21 August, 1968. |
Indian Ocean |
1 |
Ritter 154, 34 B |
| GRD029ES0 |
Basalt
|
Small (~7.5x8x6 cm from the cut face) sample of vesicular porphyritic basalt; feldspar crystals are visible in the sample. Glassy top with white rind. Billet piece. Original label: 21 August, 1968. |
Indian Ocean |
1 |
Ritter 154, 34 B |
| GRD029FS0 |
Basalt
|
Large (~14x8x8 cm from the cut face) sample of vesicular porphyritic basalt; feldspar and olivine crystals are visible in the sample. Small glassy top. Billet and billet pieces. Thin section missing. Original label: 21 August, 1968. |
Indian Ocean |
0 |
Ritter 154, 34 B |
| GRD029GS0 |
Basalt
|
Large (~7x6x6.5 cm from the cut face) sample of vesicular porphyritic basalt; feldspar and pyroxene crystals are visible in the sample. Glassy top surface with some Fe-staining. White rind on the sides. Billet and billet pieces. Thin section missing. Original label: 21 August, 1968. |
Indian Ocean |
1 |
Ritter 154, 34 B |
| GRD029HS0 |
Basalt
|
Very large (~11x12x8.5 cm from the cut face) sample of vesicular porphyritic basalt. Occasional feldspar crystals are visible in the sample. Thick Fe-Mn crust on the sample. A few chips in the Fe-Mn crust reveal a glassy surface on the top of the sample. Billet. Billet pieces. |
Indian Ocean |
0 |
Ritter 154, 34 B |
| GRD029IS0 |
Basalt
|
Large (~5.5x6x4 cm from the cut face) sample of vesicular basalt. Vesicles are small. Fe-Mn crust on the sample. Billet. Billet pieces. |
Indian Ocean |
1 |
Ritter 154, 34 B |
| GRD02AGS0 |
Basalt
|
Basalt with glassy crust and plagioclase phenocrysts. Most of the glassy crust has been chipped away. 1983-03-19. Ship: Thomas Washingotn. |
Pacific Ocean |
0 |
Ritter 154, 19 K |
| GRD02J2S0 |
Basalt
|
plag phyric diabase, probably a part of the Nipissing dikes; phenocrysts up to 2cm |
Canada |
0 |
Ritter 154, 15 I |
| GRD02J2S1 |
Basalt
|
plag phyric diabase, probably a part of the Nipissing dikes; phenocrysts up to 2cm |
Canada |
0 |
Ritter 154, 16 H |
| GRD02N3S0 |
Obsidian
|
Small sample of black perlite with white feldspar phenocrysts |
California |
1 |
Ritter 154, 15 M |
| GRD02N6S0 |
Rhyolite
|
Two pieces of Bishop Tuff. Quartz and brown fiamme in pink groundmass. Original description: Rhyolitic Tuff - Bishop Tuff. Chalky white alteration crust. |
California |
5 |
Ritter 154, 3 F |
| GRD02N7S0 |
Andesite
|
Amphibole-Plagioclase-phyric, speckled black and gray, massive seriate Andesite. Sub/Euhedral prismatic Amphibole (1-3 mm), sub/euhedral plagioclase (1-5 mm). Original Description: Andesite bearing large feldspar and amphibole crystals. 6/7 thin sections present |
California |
7 |
Ritter 154, 3 F |
| GRD02NIS0 |
Basalt
|
Small weathered sample of basalt. Patches of more coarsely grained basalt? |
California |
0 |
Camp Elliott |
| GRD02NUS0 |
Basalt
|
Amphibole phryic basalt. Original label: Basalt dike - cutting granodiorite. |
California |
0 |
Ritter 154, 20 E |
| GRD02PAS0 |
Obsidian
|
Red obsidian with scoriaceous pockets. Original label: Melted rock. Obsidian. Monterey Formation. 1988 Fall Field Trip. |
California |
2 |
Ritter 154, 15 M |
| GRD02PES0 |
Basalt
|
Basalt capped by coarsely crystalline amphibole (?). Billets. Original label: Ophiolite. Mafic dike cutting Calif 1103 and 1104. |
California |
2 |
Ritter 154, 29 F |
| GRD02PXS0 |
Basalt
|
Vesicular basalt. Slightly stretched vesicles. Original label: Layered? gabbro. |
California |
2 |
Camp Elliott |
| GRD02PYS0 |
Andesite
|
Porphyritic Andesite. Large plagioclase and small amphibole crystals in grey groundmass. Original label: Hypabyssal actually phyre. Vitrophyre. |
California |
2 |
Ritter 154, 16 B |
| GRD02PZS0 |
Basalt
|
Small green sample of a fine-grained dike rock.Plagioclase and Olivine phenocrysts with groundmass containing Epidote(?). Original label Point Sal dike chill margin (on card). |
California |
2 |
Ritter 154, 29 F |
| GRD02QHS0 |
Obsidian
|
Obsidian Salton domes(obsidian butte), Salton Sea |
California |
1 |
Ritter 154, 15 M |
| GRD02QMS0 |
Rhyolite
|
Flow banded rhyolite |
California |
0 |
Ritter 154, 15 L |
| GRD02QSS0 |
Dacite
|
Likely from avalanche deposit. Has biotite and amphibole. |
|
0 |
Ritter 154, 15 Q |
| GRD02QUS0 |
Dacite
|
Very fresh phenocrysts. Plag-euhedral, Quartz is rounded. |
California |
1 |
Ritter 154, 15 Q |
| GRD02QVS0 |
Andesite
|
Plag-hornblend phyric andesite |
California |
1 |
Ritter 154, 16 B |
| GRD02QWS0 |
Andesite
|
Plag porphorite Andesites |
5 Lakes Trail at road to Alpine Meadows ski area Rte 89 |
1 |
Ritter 154, 16 B |
