| GRD01W4S0 |
Non-layered Gneiss
|
Black biotite with some continuous and discontinuous banding. Large sample. |
California |
0 |
Ritter 154, 14 I |
| GRD01W4S1 |
Non-layered Gneiss
|
Black biotite with some continuous and discontinuous banding. Small sample. |
California |
0 |
Ritter 154, 24 B |
| GRD01W5S0 |
Ky-bearing Schist
|
Medium sample of kyanite-muscovite-quartz-chlorite schist. Very nice sample. See also M-43 and M-209. |
|
1 |
Ritter 154, 3 G |
| GRD01W6S0 |
Talc Schist
|
Medium-sized sample of talc-dolomite- tremolite schist. Pale-green talc (sheared) with a thick band of dolomite (icelandic spar). Minor amount of dark green tremolite in the talc. |
|
1 |
Ritter 154, 14 G |
| GRD01W7S0 |
Crenulation Cleavage
|
A medium-sized sample of chlorite-quartz-pyrite schist. Quartz stringers that contain cubes of pyrite. Beautiful crenulations. |
California |
2 |
Ritter 154, 14 P |
| GRD01W8S0 |
Schist
|
Tremolite-quartz-pyrite schist. Radiating crystals. |
Alpine |
1 |
Ritter 154, 14 G |
| GRD01W9S0 |
Folds
|
Very large sample of folded tremolite-talc (?)-carbonate schist. Well-foliated. |
New York |
0 |
Ritter 154, 14 R |
| GRD01WAS0 |
Crenulation Cleavage
|
Two small samples of specularite schist. |
Michigan |
0 |
Ritter 154, 14 P |
| GRD01WBS0 |
Schist
|
Well-foliated phlogopite schist. Medium- to coarse-grained. Trace amounts of quartz and pyrite. Very nice sample. |
New York |
0 |
Ritter 154, 14 D |
| GRD01WCS0 |
Schist
|
Sample of chlorite-magnetite schist. Porphyroblasts of magnetite crystals. Good foliation. Sample is all scratched up. Original description: prochlorite enclosing magnetite. |
Maryland |
0 |
Ritter 154, 14 C |
| GRD01WDS0 |
Calcsilicate (Skarn)
|
Amphibole-biotite-garnet-quartz. Very large garnet porphyroblast. Original description: gedrite-garnet-cordierite-magnetite skarn. |
Canada |
0 |
Ritter 154, 14 K |
| GRD01WES0 |
Schist
|
Multiple small samples of specularite schist. Well-foliated and fine-grained. |
|
0 |
Camp Elliott |
| GRD01WFS0 |
Schist
|
Coarse-grained, purple tremolite schist. Original description: Hexagonite tremolite schist. |
New York |
1 |
Ritter 154, 3 G |
| GRD01WGS0 |
Schist
|
Quartz-sericite schist. Quartz-sericite-flecks of magnetite. From the Chickies Quartzite. |
Pennsylvania |
1 |
Ritter 154, 24 D |
| GRD01WHS0 |
Schist
|
Small sample of specular schist |
|
0 |
Camp Elliott |
| GRD01WIS0 |
Sil-bearing Schist
|
Large sample of biotite-muscovite-quartz-sillimanite(?)schist. Slighty gneissic with generally medium- to coarse-grained texture. |
Ontario |
1 |
Ritter 154, 24 C |
| GRD01WJS0 |
Schist
|
Small sample of biotite-quartz schist. Weakly-developed foliation. Generally fine-grained. Original description: mudstone protolith; pelite enclosing M-86. |
|
1 |
Camp Elliott |
| GRD01WKS0 |
Schist
|
Small sample of biotite- quartz- potassium feldspar schist. Weakly-developed foliation. Generally fine-grained. Original description: pelitic schist wall rock of I-6. |
|
1 |
Camp Elliott |
| GRD01WLS0 |
Schist
|
Biotite-plagioclase-muscovite (trace) schist. Angular, unoriented plagioclase. Fine- to medium-grained. Moderately foliated. Original description: metapelite with little quartz. |
California |
1 |
Ritter 154, 24 D |
| GRD01WMS0 |
Schist
|
Biotite-quartz-pyrite (trace) schist. Quartz bands/augen. Generally fine- to medium-grained and well-foliated. Original description: fine-grained gneiss. |
California |
0 |
Camp Elliott |
| GRD01WNS0 |
St-bearing Schist
|
Medium-sized sample of muscovite-garnet-staurolite-quartz schist. Fine-grained phyllosilicates with garnet and staurolite porphyroblasts. Well-developed foliation. |
Alps |
0 |
Ritter 154, 14 D |
| GRD01WOS0 |
St-bearing Schist
|
Fine-grained green-silver phyllosilicates with small staurolite crystals. Small folds/crenulations in cross-sections. Nice foliation. |
Alps |
0 |
Ritter 154, 14 D |
| GRD01WPS0 |
Schist
|
Small sample of muscovite-glaucophane (?)-quartz (trace) schist. Original description: quartz-muscovite-chlorite-biotite-albite schist. |
California |
0 |
Camp Elliott |
| GRD01WQS0 |
Schist
|
Large sample of biotite-muscovite-quartz-pyrite (trace) schist. Some discontinuous quartz bands (slightly gneissic). Well-foliated and medium-grained. Original description: biotite-muscovite-quartz gneiss. |
New Zealand |
0 |
Ritter 154, 14 D |
| GRD01WRS0 |
Schist
|
Small sample of biotite-muscovite schist. Fine-grained and well-foliated. |
|
0 |
Camp Elliott |
| GRD01WSS0 |
Greenschist
|
Medium-sized sample of chlorite-chloritoid-pyrite schist. Fine-grained green phyllosilicates. The small black crystals are chloritiod (hexagonal and perfect 1-directional cleavage). Trace amounts of small pyrite crystals (often associated with chloritoid). Poorly developed slaty cleavage. Original label: Chloritoid schist. Chloritiod?-chlorite?-amphibole?-pyrite. |
|
0 |
Ritter 154, 14 D |
| GRD01WTS0 |
Talc Schist
|
Small sample of talc schist. Poorly developed foliation. Soapy feel. |
|
0 |
Ritter 154, 24 C |
| GRD01WUS0 |
Schist
|
Two small samples of glaucophane (?)-quartz-Fe-oxide (trace) schist. Fine- to medium-grained blue-grey phyllosilicates with trace Fe-minerals (with rusty halos) and quartz. |
|
0 |
Camp Elliott |
| GRD01WVS0 |
Schist
|
Seven samples of fine-grained phyllosilicates with trace pyrite (?). Patchy Fe-oxide staining on the surface of the samples. |
|
0 |
Ritter 154, 24 D |
| GRD01WWS0 |
Schist
|
Medium-sized sample of white quartz-tremolite schist. Weakly foliated, somewhat banded. |
New York |
0 |
Ritter 154, 14 G |
