| GRD000FS0 |
Quartzite
|
Fine-grained grey quartzite with a Fe-rich red crust. Original description: pyritiferous feldspathic quartzite. |
California |
1 |
Ritter 154, 14 L |
| GRD0014S0 |
Impure Marble
|
Fine-grained brown marble. Nice relict laminae. Micrite protolith? Original description: Limestone. Horizontal recrystallized laminae. |
California |
1 |
Ritter 154, 14 J |
| GRD0015S0 |
Quartzite
|
Metamorphosed quartz sandstone (minor plag), partially recrystallized. |
California |
1 |
Ritter 154, 14 L |
| GRD001LS0 |
Calcsilicate (Skarn)
|
Syenite/Diorite mixture. Little to no foliation. Small garnets in melanosomes. Fenner gneiss? Original label: Trachyte porphyry. |
California |
1 |
Ritter 154, 14 K |
| GRD001SS0 |
Granulite
|
Amphibole stringers in feldspar. Original description: gabbro injected by syenite/granite. |
New York |
1 |
Ritter 154, 14 N |
| GRD0028S0 |
Eclogite
|
No hand sample; Thin section is in Thin Section only case in RH 154. |
Norway |
1 |
Ritter 154 |
| GRD002JS0 |
Granulite
|
Small sample. Original label: contains Quartz, Hy, Feld. See also I-98, I-99. |
India |
0 |
Ritter 154, 14 N |
| GRD002KS0 |
Granulite
|
Small sample. Original label: Quartz: Hy: Feld. See also I-97, I-99. |
Sri Lanka |
0 |
Ritter 154, 14 N |
| GRD002LS0 |
Granulite
|
Small sample. Original label: Quartz: Hy: Feld. See also I-97, I-98. |
India |
0 |
Ritter 154, 14 N |
| GRD002SS0 |
Calcsilicate (Skarn)
|
Small sample, mostly composed of clear feldspar with a few black amphibole. Very porous/vuggy. |
Germany |
0 |
Ritter 154, 24 E |
| GRD002TS0 |
Calcsilicate (Skarn)
|
Four very small samples that are mostly composed of clear wollastonite with flecks of red garnet and green diopside. Granulite facies. Original description: Wo-Ga-Di. |
New York |
0 |
Ritter 154, 14 K |
| GRD002VS0 |
Calcsilicate (Skarn)
|
Tremolite-apatite-magnetite-calcite-perovskite- kimzeyite (?) |
Arkansas |
0 |
Ritter 154, 14 K |
| GRD003WS0 |
Blueschist
|
Franciscan Formation. Glaucophane schist (?). Thin discontinuous, folded bands of glaucophane (?) and quartz. |
California |
0 |
Ritter 154, 24 I |
| GRD003XS0 |
Greenschist
|
Green with calcite veins. No foliation. Original description: Altered Basalt. |
California |
0 |
Ritter 154, 24 C |
| GRD008MS0 |
Quartzofeldspathic
|
Small cut sample. Original label: Hess p.52-55 Cordierite: Hypersthene: Quartz: Hornfels. |
Montana |
1 |
Ritter 154, 14 N |
| GRD00F7S0 |
Calcsilicate (Skarn)
|
Large, coarse-grained sample. Calcite>>micas (biotite and muscovite)> hedenbergite> oxides. Original description: impure coarse grained marble, light brown (hedenbergite?), micas. |
|
0 |
Ritter 154, 14 I |
| GRD00M3S0 |
Quartzite
|
Original label: Chokecherry quartzite with clasts of black chert. Chokecherry formation. Silurian (?) 1955. |
Nevada |
3 |
Ritter 154, 14 L |
| GRD00M4S0 |
Quartzite
|
Original label: Tuscorora quartzite. L. Silurian. Coll. No. P.T. 402, May 1951. |
Pennsylvania |
1 |
Ritter 154, 14 L |
| GRD00UNS0 |
Calcsilicate (Skarn)
|
Large sample composed of irregular bands of clear (calcite), grey, and bright green minerals (Vesuvianite? Epidote?). Original description: epidote-mineralized rock? hydrothermal alteration? |
California |
0 |
Ritter 154, 14 K |
| GRD00WJS0 |
Marble
|
missing, Ordovician, White Marble |
Vermont |
0 |
|
| GRD00WKS0 |
Marble
|
missing, Cambrian White Marble |
Georgia |
0 |
|
| GRD00WQS0 |
Marble
|
missing, Precambrian, marble |
Wyoming |
0 |
|
| GRD01GCS0 |
Serpentinite
|
Original description: Serpentinite, Late Paleozoic. |
United Kingdom |
0 |
Ritter 154, 14 M |
| GRD01VAS0 |
Amphibolite
|
Plagioclase-amphibole-biotite-garnet. Granoblastic texture with clots of garnet and biotite. Original description: Ga?-B-Q gneiss. Garnet is pinkish, may be spessertine. |
|
0 |
Ritter 154, 14 G |
| GRD01W2S0 |
Greenschist
|
Medium-sized sample of talc-actinolite-tremolite schist. Green fibrous/foliated sample with very nice actinolite crystals. |
|
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 |
| 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 |
| GRD01X7S0 |
Blueschist
|
Small sample of glaucophane (?)-quartz schist. Very weaky foliated to non-foliated. Fine- to medium-grained. |
Mexico |
0 |
Ritter 154, 24 C |
| 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 |
| 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 |
