| GRD0001S0 |
Obsidian
|
Black, conchoidal fracture. Grey band. |
California |
2 |
Ritter 154, 15 M |
| GRD0002S0 |
Syenite
|
polished larvikite |
Norway |
1 |
Ritter 154, 15 C |
| GRD0003S0 |
Obsidian
|
|
California |
1 |
Ritter 154, 15 M |
| GRD0004S0 |
Pumice
|
|
Indonesia |
1 |
Ritter 154, 15 J |
| GRD0005S0 |
Obsidian
|
|
|
1 |
Ritter 154, 19 F |
| GRD0006S0 |
Granite
|
Fresh. Q, Kspar (microcline), Plag, Musc. About 1.6 Ga. |
South Dakota |
1 |
Ritter 154, 15 A |
| GRD0007S0 |
Granite
|
|
Colorado |
0 |
|
| GRD0008S0 |
Syenite
|
|
New York |
0 |
Ritter 154, 15 C |
| GRD0009S0 |
Granite
|
Eastern edge of Adirondacks (Grenville?). Original label: Graphite-bearing. |
New York |
1 |
Ritter 154, 15 A |
| GRD000AS0 |
Syenite
|
Garnet-bearing. Original description: syenitic anorthosite. |
New York |
0 |
Ritter 154, 15 C |
| GRD000BS0 |
Syenite
|
Original description: Hedenbergite granite. Probably part of Grenville fayalite-augite syenites of Wanakena. |
New York |
1 |
Ritter 154, 15 C |
| GRD000CS0 |
Peridotite
|
Ultramafic |
New Zealand |
0 |
Ritter 154, 16 K |
| GRD000DS0 |
Rhyolite
|
Pink. Quartz and K-spar rich. Original description: Miarolitic rhyolite porphyry. |
|
1 |
Ritter 154, 15 G |
| GRD000ES0 |
Peridotite
|
Original description: forsterite-spinel skarn. Thin section: metamorphosed Diopside?, Olivine, brown spinel, trace plag. |
California |
1 |
Ritter 154, 16 K |
| GRD000FS0 |
Quartzite
|
Fine-grained grey quartzite with a Fe-rich red crust. Original description: pyritiferous feldspathic quartzite. |
California |
1 |
Ritter 154, 14 L |
| GRD000GS0 |
Obsidian
|
Spherulitic Obsidian |
California |
1 |
Ritter 154, 15 M |
| GRD000HS0 |
Andesite
|
Amygduloidal basaltic andesite |
California |
0 |
Camp Elliott |
| GRD000IS0 |
Diorite
|
Original label: Porphyritic banded gabbro/diorite. Faint layering/banding. |
California |
1 |
Ritter 154, 15 P |
| GRD000JS0 |
Granodiorite
|
Original label: Granodiorite. |
California |
1 |
Ritter 154, 15 N |
| GRD000KS0 |
Diorite
|
Thin section only. Thin section is in Thin Section only case in RH 154. Coarse-grained, fresh. Original label: Tonalite. Missing |
California |
1 |
Ritter 154 |
| GRD000LS0 |
Granite
|
Original label: Granodiorite. |
California |
1 |
Ritter 154, 15 A |
| GRD000MS0 |
Granodiorite
|
Original label: Tonalite (Q diorite). |
California |
1 |
Ritter 154, 15 O |
| GRD000NS0 |
Granodiorite
|
Original label: (aplite) sill. |
California |
1 |
Ritter 154, 15 N |
| GRD000OS0 |
Granodiorite
|
Original label: Sphene bearing Q diorite. |
California |
1 |
Ritter 154, 15 N |
| GRD000PS0 |
Diorite
|
No hand sample. Thin section is in Thin Section only case in RH 154. Missing |
California |
1 |
Ritter 154 |
| GRD000QS0 |
Syenite
|
Presumably Grenville. Original label: syenite. |
New York |
1 |
Ritter 154, 15 C |
| GRD000RS0 |
Rhyolite
|
Original label: Rhyolite porphyry. |
Missouri |
1 |
Ritter 154, 15 F |
| GRD000SS0 |
Granite
|
No hand sample. Thin section is in Thin Section only case in RH 154. Missing |
|
1 |
Ritter 154 |
| GRD000TS0 |
Rhyolite
|
pink rhyolite with Q-Hb-Plag phenocrysts |
California |
0 |
Ritter 154, 15 F |
| GRD000US0 |
Dacite
|
fairly altered |
California |
1 |
Ritter 154, 15 Q |
