| GRD0014S0 |
Impure Marble
|
Fine-grained brown marble. Nice relict laminae. Micrite protolith? Original description: Limestone. Horizontal recrystallized laminae. |
California |
1 |
Ritter 154, 14 J |
| GRD00WJS0 |
Marble
|
missing, Ordovician, White Marble |
Vermont |
0 |
|
| GRD00WKS0 |
Marble
|
missing, Cambrian White Marble |
Georgia |
0 |
|
| GRD00WQS0 |
Marble
|
missing, Precambrian, marble |
Wyoming |
0 |
|
| 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 |
| 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 |
| GRD01ZZS0 |
Impure Marble
|
Marble with relict bedding. The light beds are composed of carbonate. The dark beds are carbonaceous carbonate. Some Fe-staining along fractures. Original description: carbonaceous marble. |
California |
0 |
Ritter 154, 14 J |
| GRD0216S0 |
Dolomite Marble
|
White, granoblastic dolomite marble. Faint spots of Fe-staining. Monomineralic. See also M-425. |
|
0 |
Ritter 154, 14 J |
| GRD0216S1 |
Dolomite Marble
|
White, granoblastic dolomite marble. Faint spots of Fe-staining. Monomineralic. See also M-425. |
|
0 |
Ritter 154, 24 E |
| GRD02A9S0 |
Dolomite Marble
|
Banding/relict bedding? Cryptocrystalline to very coarse-grained. Mainly composed of dolomite and thin, black dendrites (pyrolusite?). Original label: Chert? |
|
0 |
Ritter 154, 14 J |
| GRD02BAS0 |
Dolomite Marble
|
Coarse-grained, white dolomite marble. |
California |
0 |
Ritter 154, 14 J |
| GRD02EDS0 |
Calcite Marble
|
Grey coarse-grained marble. Very nice crystals. |
California |
0 |
Ritter 154, 14 J |
| GRD02EDS1 |
Calcite Marble
|
Grey and white coarse-grained marble. Very nice crystals. |
California |
0 |
Ritter 154, 24 E |
| GRD02HCS0 |
Marble
|
Highly recrystallized limestone/marble. Dark grey with white calcite veins. Billet. |
California |
0 |
Camp Elliott |
| GRD02N5S0 |
Marble
|
Coarsely crystalline grey marble. With 2-5 mm layering of course and medium grained crystals |
California |
4 |
Ritter 154, 3 G |
