| GRD01V2S0 |
Schist
|
Large sample of coarse-grained schist composed of biotite-muscovite-plagioclase-potassium feldspar-quartz. Foliated with little to no banding. Alpine schist? Original label: Zone 7. |
New Zealand |
0 |
Ritter 154, 14 C |
| GRD01VTS0 |
Ga-bearing Schist
|
Slight slaty cleavage. Fine- to medium-grained grey phyllosilicates, garnet porphyroblasts, and trace amounts of muscovite and quartz. |
South Dakota |
0 |
Ritter 154, 24 D |
| GRD01VUS0 |
Ga-bearing Schist
|
Thin slab of schist composed of very fine-grained green phyllosilicates with altered garnet porphyroblasts. Possibly retrograde (altered). Well-developed slaty cleavage. |
|
0 |
Ritter 154, 24 D |
| GRD01VVS0 |
Ga-bearing Schist
|
Small sample of medium-grained phyllosilicates with very small garnet (rare) and lenses/sigma clasts of quartz. Well-developed slaty cleavage. |
|
0 |
Ritter 154, 24 C |
| GRD01VWS0 |
St-bearing Schist
|
Very small sample of a medium- to coarse-grained schist composed of muscovite-garnet-staurolite. Gem-like crystals. |
|
0 |
Ritter 154, 24 C |
| GRD01VYS0 |
St-bearing Schist
|
Medium-sized sample of a schist composed mainly fine-frained phyllosilicates (chlorite, biotite, muscovite trace) with garnet and staurolite porphyroblasts. Nice lineations. |
|
0 |
Ritter 154, 14 C |
| GRD01VZS0 |
St-bearing Schist
|
Small sample of schist composed mostly of muscovite and staurolite. Small s fold in cross-section. |
|
0 |
Ritter 154, 24 C |
| GRD01W0S0 |
Schist
|
Medium-grained phyllosilicates (mostly phlogopite) with a small amount of quartz. Well-developed foliation. Original description: graphitic schist. |
New York |
0 |
Ritter 154, 14 C |
| GRD01W1S0 |
St-bearing Schist
|
Medium-sized sample of schist composed of fine-grained phyllosilicates with garnet and a few staurolite porphyroblasts. See also M-167 for a similar sample. Original description: Staurolite-garnet schist of the staurolite zone of the Flag Rock formation. |
South Dakota |
0 |
Ritter 154, 14 C |
| GRD01W3S0 |
Ga-bearing Schist
|
Multiple small samples of mica-garnet-quartz schist. Fine-grained phyllosilicates (muscovite and biotite?) with garnet porphyroblasts and discontinuous quartz lenses. |
|
0 |
Ritter 154, 24 C |
| 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 |
| GRD01W8S0 |
Schist
|
Tremolite-quartz-pyrite schist. Radiating crystals. |
Alpine |
1 |
Ritter 154, 14 G |
| 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 |
| 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 |
| GRD01WTS0 |
Talc Schist
|
Small sample of talc schist. Poorly developed foliation. Soapy feel. |
|
0 |
Ritter 154, 24 C |
