| GRD01XSS0 |
Blueschist
|
Blueschist composed of magnesioreibeckite(?)-Fe-oxides-quartz-Cu-mineralization. Small sample is friable. Some quartz banding in the larger sample. Franciscan? |
|
1 |
Ritter 154, 24 C |
| GRD01XSS1 |
Blueschist
|
Blueschist composed of magnesioreibeckite(?)-Fe-oxides-quartz-Cu-mineralization. Small sample is friable. Some quartz banding in the larger sample. Franciscan? |
|
1 |
Ritter 154, 14 C |
| GRD01XTS0 |
Blueschist
|
Medium-sized sample of poorly foliated blueschist. Glaucophane with large calcite band. |
|
0 |
Ritter 154, 24 C |
| GRD01XXS0 |
Greenschist
|
Small sample of greenschist, composed of amphibole-quartz-chlorite-biotite-calcite/carbonate. Poorly foliated and medium- to coarse-grained. |
|
1 |
Ritter 154, 14 C |
| GRD01Y4S0 |
Impure Marble
|
Coarse-grained calcite with small metallic oxide crystals; some oxides have a rust halo while others do not. Perhaps the latter is molybdenite?. See also M-59 and M-211 |
|
0 |
Ritter 154, 14 J |
| GRD01Y5S0 |
Impure Marble
|
Coarse-grained calcite with small metallic oxide crystals. Some oxides have a rust halo while others do not. Perhaps the latter is molybdenite?. See also M-58 and M-211. Original description: calcitic marble. |
New York |
0 |
Ritter 154, 14 J |
| GRD01Y6S0 |
Dolomite Marble
|
Pink-peach dolomite marble. Original description: dolomitic marble. |
New York |
0 |
Ritter 154, 14 J |
| GRD01Y8S0 |
Calcite Marble
|
Fine-grained grey marble with a few thin layers of Fe-staining. Two billets. |
California |
0 |
Ritter 154, 14 J |
| GRD01Y9S0 |
Calcite Marble
|
White, medium-grained marble. Some cleavage faces visible using a hand-lense. |
|
0 |
Ritter 154, 14 J |
| GRD01YAS0 |
Calcite Marble
|
White, medium-grained marble. Some cleavage faces visible using hand-lense. See also M-385. |
|
0 |
Ritter 154, 24 E |
| GRD01YAS1 |
Calcite Marble
|
White, medium-grained marble. Some cleavage faces visible using hand-lense. See also M-385. |
|
0 |
Ritter 154, 24 E |
| GRD01YAS2 |
Calcite Marble
|
White, medium-grained marble. Some cleavage faces visible using hand-lense. See also M-385. |
|
0 |
Ritter 154, 24 E |
| GRD01YCS0 |
Dolomite Marble
|
Mottled red-pink, fine-grained dolomite marble. One clear vein crosses the sample. Billet. |
|
0 |
Ritter 154, 24 E |
| GRD01YDS0 |
Impure Marble
|
Large slabby, fine-grained, foliated sample. Perhaps some relict bedding (low-grade metamorphism). Possibly from an impure limestone (marl?). Mylonite?. Original label: Penn Limestone. |
California |
0 |
Ritter 154, 14 J |
| GRD01YFS0 |
Calcite Marble
|
Coarse-grained layers of white, grey, and pink calcite. Grey layers contain small metallic flecks. Pink layers are pink due to staining. |
|
0 |
Ritter 154, 14 J |
| GRD01YGS0 |
Calcite Marble
|
Layering (relict bedding?) in coarse-grained marble. Granular (weathered). Minor amount of red and green mineralization. |
|
0 |
Ritter 154, 14 J |
| GRD01YIS0 |
Quartzite
|
Mariposite Marble. Quartzite with green mineralization and large white veins. Original description: fuchsite- and mariposite- bearing rock. Billet. See also M-363. |
California |
0 |
Ritter 154, 14 L |
| GRD01YIS1 |
Quartzite
|
Mariposite Marble. Quartzite with green mineralization and large white veins. Original description: fuchsite- and mariposite- bearing rock. Billet. See also M-363. |
California |
0 |
Ritter 154, 24 F |
| GRD01YJS0 |
Quartzite
|
Mariposite Marble. Quartzite with green mineralization and large white veins. Original description: fuchsite- and mariposite- bearing rock. Billet. See also M-418. |
California |
0 |
Ritter 154, 24 F |
| GRD01YKS0 |
Calcite Marble
|
Contact between coarse-grained light and dark marbles. Light marble becomes more fine-grained closer to dark marble. Rust blebs in dark marble. |
Arizona |
1 |
Ritter 154, 14 J |
| GRD01YLS0 |
Calcite Marble
|
Fine-grained marble cut by veinlets. Impure limestone protolith (?). |
Arizona |
1 |
Ritter 154, 14 J |
| GRD01YMS0 |
Impure Marble
|
Small sample of a coarse-grained marble. Nice cleavage faces on calcite and muscovite. Books of muscovite and small metallic flecks (trace). See also M-58 and M-59. |
|
0 |
Ritter 154, 14 J |
| GRD01YNS0 |
Impure Marble
|
Calcite-phlogopite-muscovite-plagioclase-quartz marble. Generally coarse-grained. Poorly foliated with granoblastic texture. |
Alpine |
5 |
Ritter 154, 3 H |
| GRD01YOS0 |
Impure Marble
|
Fine-grained grey and white marble. Relict bedding or structure? Large, euhedral oxidized pyrite porphyroblasts. Original description: dolomite marble, contains sulfides. |
|
0 |
Ritter 154, 14 J |
| GRD01YPS0 |
Eclogite
|
Small sample; Red pyrope porphyrobasts in green omphasite-chlorite matrix; minor amount of muscovite (associated with the garnets); Franciscan. Original description: Retrograde chlorite eclogite. |
California |
0 |
Ritter 154, 14 N |
| GRD01YQS0 |
Eclogite
|
Small red pyrope porphyrobasts in fine-grained green omphasite-chlorite matrix. Original description: Eclogite. Omphasite-a green pyroxene, Pyrope Almadine, a red garnet. Highest P+T faces. |
California |
0 |
Ritter 154, 14 N |
| GRD01YRS0 |
Eclogite
|
Two slabs and a block of eclogite. Small red garnet porphyrobasts in green omphasite-chlorite matrix. Medium-grained. |
|
1 |
Ritter 154, 14 N |
| GRD01YTS0 |
Greenschist
|
Chlorite-cordierite-epidote, sphene-magnetite-quartz-biotite schist. Chlorite schist with magnetite porphyroblasts and uniaxial positive first order grey porphyroblasts (cordierite?). |
New Zealand |
5 |
Ritter 154, 3 H |
| GRD01ZVS0 |
Quartzite
|
Pink, medium-grained quartzite with red lenses of Fe-oxide mineralization (likely along fractures). Billet. |
|
0 |
Ritter 154, 14 L |
| GRD01ZWS0 |
Quartzite
|
Fine- to medium-grained white quartzite with some molybdenite along a fracture/surface. Original description: molybdenite-bearing quartzite. |
|
0 |
Ritter 154, 14 L |
