| GRD00VUS0 |
Slate
|
Red slate, Nettawee Slate, Cambrian. No hand sample; Thin section in thin section only case in RH 154. |
New York |
1 |
Ritter 154 |
| GRD01VES0 |
Slate
|
Fine grained purple slate with leach spots. Poorly developed slaty cleavage. Original description: Argillite, Crystal Spring formation. |
California |
0 |
Ritter 154, 14 F |
| GRD01VFS0 |
Slate
|
Multiple pieces of purple slate with green mottling. Very small pyrite and garnet crystals which are visible with hand lense. Perfect slaty cleavage. |
|
0 |
Ritter 154, 14 F |
| GRD01VGS0 |
Slate
|
Dark grey-brown with black leaf/reed imprints. Slaty cleavage. Fine-grained. |
|
0 |
Ritter 154, 14 F |
| GRD01VHS0 |
Slate
|
Dark grey slate with black, round crystals (amphibole? Chloritoid? Fe-minerals?). Slaty cleavage. |
Fremont Isle |
0 |
Ritter 154, 14 F |
| GRD01VMS0 |
Slate
|
Green, fine-grained, earthy luster. Original description: phyllite, meta-sandstone or siltstone, muscovite, chlorite? |
|
0 |
Ritter 154, 14 F |
| GRD01VOS0 |
Slate
|
Purple with reddish/orange veins (Fe-staining?). Earthy luster. Very small amphibole crystals (rare). Original description: argillite. |
California |
1 |
Ritter 154, 14 F |
| GRD01VQS0 |
Slate
|
Dark grey/black slate with visible muscovite crystals. |
|
0 |
Ritter 154, 14 F |
| GRD01VXS0 |
Slate
|
Argillite. Purple with pink and teal lenses (due to leaching?). Fine-grained. Earthy luster. |
|
0 |
Ritter 154, 14 F |
| GRD02NZS0 |
Slate
|
Small sample of dark slate. Foliated. Original label: Metasediment. Schist pendant. |
California |
1 |
Ritter 154, 14 F |
| GRD02O2S0 |
Slate
|
Very small sample of slate. Original label: Metasediment? Metagreywacke? Schist pendant. |
California |
0 |
Camp Elliott |
| GRD03Z6S0 |
Slate
|
Black slate |
California |
0 |
Ritter 154, 14 F |
