| GRD01X1S0 |
Folds
|
Well-developed foliation. Quartz-biotite-phologopite(?) gneiss. Small ptygmatic folds. |
New Zealand |
1 |
Ritter 154, 14 P |
| GRD01X2S0 |
Talc Schist
|
Large sample of a folded talc schist with well-developed foliation. |
New York |
1 |
Ritter 154, 14 I |
| GRD01X3S0 |
Schist
|
Anthophyllite schist. Grey acicular crystals with cream, fibrous intergrowths. Large sample. |
California |
1 |
Ritter 154, 14 I |
| GRD01X4S0 |
Folds
|
Small quartz folds in fine-grained blue matrix. Blue: magnesioreibeckite (?), glaucophane (?). Original description: folded gneiss; blue schist facies? |
|
0 |
Ritter 154, 14 P |
| GRD01X4S1 |
Folds
|
Small quartz folds in fine-grained blue matrix. Blue: magnesioreibeckite (?), glaucophane (?). Original description: folded gneiss; blue schist facies? |
|
0 |
Ritter 154, 14 P |
| GRD01X5S0 |
Lineation
|
Calcite-quartz-muscovite-pyrite. Contact between marble-schist. Nice lineations. Slight banding. |
|
1 |
Ritter 154, 14 P |
| GRD01X6S0 |
Augen Gneiss
|
Medium-sized sample of gneiss composed of potassium feldspar-quartz-chlorite-muscovite. Well-foliated. Large white potassium feldspar augen. |
Alpine |
1 |
Ritter 154, 14 B |
| GRD01X7S0 |
Blueschist
|
Small sample of glaucophane (?)-quartz schist. Very weaky foliated to non-foliated. Fine- to medium-grained. |
Mexico |
0 |
Ritter 154, 24 C |
| GRD01X8S0 |
St-bearing Schist
|
Medium-sized sample of muscovite-quartz-garnet-staurolite-actinolite schist. Garnet crystals most prevalent in a single band. Billet. Original description: St-Ga-Ky gneiss. |
|
0 |
Ritter 154, 14 D |
| GRD01X9S0 |
St-bearing Schist
|
Small cut slab of muscovite-quartz-garnet-actinolite-staurolite schist. Original description: staurolite-garnet schist. |
|
0 |
Ritter 154, 24 D |
| GRD01XAS0 |
Greenschist
|
Five small samples of chlorite-quartz-pyrite schist. Green mica (chlorite?) with occasional stringers and cubes of pyrite and stringers of quartz. Altered? |
|
0 |
Ritter 154, 14 D |
| GRD01XBS0 |
Ky-bearing Schist
|
Kyanite-quartz-biotite schist. Large band of coarse-grained quartz-kyanite between biotite Nice kyanite. Billets. See also M-209 and M-34. |
|
1 |
Ritter 154, 14 C |
| GRD01XCS0 |
Ky-bearing Schist
|
Kyanite-quartz-biotite schist. Large band of coarse-grained quartz-kyanite capped by foliated biotite. Nice kyanite. See also M-43 and M-34. |
Alps |
1 |
Ritter 154, 14 D |
| GRD01XDS0 |
Non-layered Gneiss
|
Foliated with discontinuous banding. Green amphibole. A single very large augen/boudin compsed of pink quartz with flecks of amphibole and actinolite. Original description: metamorphosed conglomerate. |
Canada |
1 |
Ritter 154, 14 B |
| GRD01XES0 |
Layered Gneiss
|
Biotite/amphibole-quartz-plagioclase (minor)-pyrite (rare). Layer of amphibole/actinolite(?). Large augen/boudin compsed of clear quartz. Original description: metamorphosed conglomerate. |
Canada |
1 |
Ritter 154, 14 B |
| GRD01XFS0 |
Phyllite
|
Fine-grained blue/grey minerals (chlorotoid?) in cream-colored fine-grained phyllosilicate (muscovite?) matrix. Slight slaty cleavage and dull sheen. Original description: Chlorotoid schist. |
Camlia |
0 |
Ritter 154, 14 E |
| GRD01XGS0 |
Greenschist
|
Medium-sized sample of chlorite-quartz-biotite schist. Slightly banded: some bands of quartz. Other bands of fine-grained chlorite. Still other bands of chlorite with biotite porphyroblasts. Original description: Q-Bi schist/gneiss. |
|
1 |
Ritter 154, 14 D |
| GRD01XHS0 |
Ga-bearing Schist
|
Medium-sized sample of tremolite-plagioclase-muscovite-garnet schist. Well-foliated. See also M-36. |
|
1 |
Ritter 154, 14 G |
| GRD01XIS0 |
Ga-bearing Schist
|
Small sample of tremolite-quartz-muscovite-garnet schist. Well-foliated. See also M-35. Missing 1/2 thin sections |
|
2 |
Ritter 154, 3 G |
| GRD01XJS0 |
Ga-bearing Schist
|
Medium-sized sample of biotite-quartz-amphibole-garnet schist. Weakly-foliated. Porphyroblast-rich schist? |
|
1 |
Ritter 154, 14 D |
| GRD01XKS0 |
Schist
|
Small sample of amphibole-purple tremolite (?) schist. Poorly foliated and generally coarse-grained. Original description: fuchsite-bearing quartz-mica schist. |
Utah |
1 |
Ritter 154, 14 D |
| GRD01XLS0 |
Augen Gneiss
|
Large sample of gneiss composed of biotite-potassium feldspar-quartz. Potassium feldspar augen. Discontinuous banding. |
|
1 |
Ritter 154, 24 A |
| GRD01XMS0 |
Amphibole Schist
|
Small slab of amphibole-plagioclase-chlorite (trace) schist. Well-foliated with lineations. Portion of a cobble? |
Alpine |
1 |
Ritter 154, 24 C |
| GRD01XNS0 |
Augen Gneiss
|
Small slab of gneiss composed of quartz-muscovite-potassium feldspar; Foliated/banding. Potassium feldspar augen. |
Alpine |
1 |
Ritter 154, 14 B |
| GRD01XOS0 |
Schist
|
Small sample of garnet-quartz-potassium feldspar-biotite schist. |
Alpine |
1 |
Ritter 154, 14 D |
| GRD01XPS0 |
Lineation
|
Large sample of gneiss composed of plagioclase-biotite-quartz. Well-foliated with lineations. Fine- to medium-grained. Original description: hornblende gneiss or amphibolite; Jurassic-Cretaceous. |
California |
1 |
Ritter 154, 24 I |
| GRD01XQS0 |
Schist
|
Medium-sized quartz-biotite-plagioclase-muscovite schist. Some banding and yellow sulfur mineralization. Original description: hornblende schist; Jurassic-Cretaceous. |
California |
1 |
Ritter 154, 24 C |
| GRD01XRS0 |
Amphibole Schist
|
Small sample of amphibole-quartz-muscovite-glaucophane(?) schist. Original description: glaucophane schist. Jurassic? |
Mexico |
1 |
Ritter 154, 24 C |
| 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 |
