| 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 |
| GRD02N8S0 |
Granite
|
Small cut sample of granite. Original description: Block from road cut. |
California |
1 |
Ritter 154, 15 B |
| GRD02N9S0 |
Granite
|
Weathered sample of granite. Contains amphibole and biotite. Original description: Talus at foot of Washington column. |
California |
3 |
Ritter 154, 15 B |
| GRD02NAS0 |
Granite
|
Granite. Original description: Pendant of layered quartzite and shale in granites. (original description likely for different sample)at Lake Ellery and Tioga Pass Road |
California |
0 |
Ritter 154, 19 B |
| GRD02NBS0 |
Monzonite
|
Large sample of quartz monzonite. Original description: El Capitan Quartz Monzonite. Large slab on roadside. Quartz orthoclase plagioclase with minor sphene and nice zoning, biotite(some altering to chlorite). |
California |
5 |
Ritter 154, 3 F |
| GRD02NCS0 |
Granodiorite
|
2.5 cm aplite dike cutting granodiorite. Original description: Aplite dike cutting weakly foliated granodiorite atp(?) Also mafic hornfels inclusions and streamers. |
California |
0 |
Ritter 154, 16 Q |
| GRD02NDS0 |
Pumice
|
Sparsely porphyritic pumice. Trace biotite. Original description: Perlitic Pumice. |
California |
0 |
Camp Elliott |
| GRD02NHS0 |
Gabbro
|
Fine-grained green gabbro. Carbonate crust and veins in sample. |
California |
1 |
Camp Elliott |
| GRD02NIS0 |
Basalt
|
Small weathered sample of basalt. Patches of more coarsely grained basalt? |
California |
0 |
Camp Elliott |
| GRD02NJS0 |
Gabbro
|
Fine-grained green gabbro. Carbonate spots and veins in sample. |
California |
0 |
Camp Elliott |
| GRD02NKS0 |
Gabbro
|
Coarse-grained green gabbro. Pyroxene. Nice hand sample. |
California |
1 |
Ritter 154, 16 C |
| GRD02NMS0 |
Gabbro
|
Sample of coarse-grained green gabbro. |
California |
0 |
Camp Elliott |
| GRD02NNS0 |
Ash
|
Sample of pink very fine-grained ash tuff. Veins and lenses of calcite. Spots of Fe-stains. |
California |
0 |
Ritter 154, 22 H |
| GRD02NOS0 |
Gabbro
|
Small sample of coarse-grained gabbro. Fair amount of metallic oxides. |
California |
0 |
Camp Elliott |
| GRD02NPS0 |
Gabbro
|
Two small samples of coarse-grained gabbro. One sample could be made into a billet. |
California |
0 |
Camp Elliott |
| GRD02NQS0 |
Anorthosite
|
Anorthosite. 95% orthoclase. Trace oxides. |
California |
0 |
Ritter 154, 20 D |
| GRD02NRS0 |
Gabbro
|
Small sample of medium grained gabbro. 50% orthoclase - 50% amphibole. |
California |
0 |
Camp Elliott |
| GRD02NSS0 |
Gabbro
|
Small sample of coarse grained gabbro. 50% orthoclase - 50% amphibole. |
California |
0 |
Ritter 154, 16 D |
| GRD02NUS0 |
Basalt
|
Amphibole phryic basalt. Original label: Basalt dike - cutting granodiorite. |
California |
0 |
Ritter 154, 20 E |
| GRD02NWS0 |
Gabbro
|
Plagioclase-rich gabbro with Fe-stained crust on sample. Original label: Gabbro. Plagioclase (An55), Hypersthene (many with pyroxene overgrowths), opaques form a lattice-like pattern. A few apatite crystals. Numerous complex twins amo(?)-orthopyroxene-clinopyroxene-olivine-hornblende-spinel. |
California |
4 |
Ritter 154, 3 E |
| GRD02O6S0 |
Granodiorite
|
Medium-grained granodiorite. Orthoclase-quartz-amphibole-biotite |
California |
2 |
Ritter 154, 15 N |
| GRD02O9S0 |
Diorite
|
Original description: Hornblende diorite. 3/4 thin sections |
California |
4 |
Ritter 154, 3 E |
| GRD02OCS0 |
Welded Ignimbrite
|
Bishop Tuff. Dark brown fiamme mantled by black rims with rounded quartz crystals in pink groundmass. Quartz and garnet-rich xenolith. |
California |
2 |
Ritter 154, 3 E |
| GRD02ODS0 |
Welded Ignimbrite
|
Bishop Tuff. Dark brown fiamme mantled by black rims with rounded quartz crystals in pink groundmass. Hypocrystalline. |
California |
5 |
Ritter 154, 3 F |
| GRD02OES0 |
Diorite
|
Plagioclase-biotite-quartz-oxide diorite. Missing TS box |
California |
4 |
Ritter 154, 15 P |
| GRD02OFS0 |
Granodiorite
|
Coarse-grained Granodiorite containing Plagioclase, K-spar, Quartz, Hornblende, Biotite, trace Sphene and other Opaques. Original Description (Eichler?): El Capitan Granite. Pale, coarse-grained granite. |
California |
4 |
Ritter 154, 3 F |
| GRD02OGS0 |
Granodiorite
|
Medium grain light colored granite with Biotite (2-3 mm), Plagioclase (1-10 mm), Quartz (1-3 mm), K-spar (1-10 mm). Color Index: 5. Original Description: Two samples (one is a cut slab) of light colored, coarse-grained granite. |
California |
0 |
Ritter 154, 3 E |
| GRD02OGS1 |
Granodiorite
|
Medium grain light colored granite with Biotite (2-3 mm), Plagioclase (1-10 mm), Quartz (1-3 mm), K-spar (1-10 mm). Color Index: 5. Original Description: Two samples (one is a cut slab) of light colored, coarse-grained granite. Thin sections with S0 sample. |
California |
0 |
Ritter 154, 15 I |
| GRD02OHS0 |
Diorite
|
One cut slab of fine-grained diorite |
California |
4 |
Ritter 154, 15 P |
