| GRD02EHS0 |
Mylonite
|
Quartz-plagioclase-biotite schistose gneiss. Well-foliated and medium- to coarse-grained. |
California |
0 |
Ritter 154, 14 R |
| GRD02EIS0 |
Amphibole Schist
|
Actinolite-biotite-muscovite (trace) schist. Large, green sample. |
California |
0 |
Ritter 154, 24 M |
| GRD02EJS0 |
Migmatitic Gneiss
|
Original description: Migmatite granitic dike mixed with pelitic garnet-biotite schist. T35 R43. |
California |
0 |
Ritter 154, 24 B |
| GRD02EKS0 |
Non-layered Gneiss
|
Feldspar-quartz-biotite-amphibole (?) gneiss. Poorly developed banding; thin wisps of biotite. |
|
0 |
Ritter 154, 24 A |
| GRD02ELS0 |
Non-layered Gneiss
|
Quartz-biotite-garnet gneiss. Poorly developed banding; thin wisps of biotite. |
|
0 |
Ritter 154, 24 A |
| GRD02EMS0 |
Calcsilicate (Skarn)
|
Coarse-grained calcsilicate. Very soft (Mohs hardness ~2). Chicken-wire appearance of dark rings. |
|
0 |
Ritter 154, 14 K |
| GRD02ENS0 |
Schist
|
Orocopia Schist. Muscovite-biotite-quartz-hornblende (?) schist. |
California |
0 |
Ritter 154, 24 M |
| GRD02EXS0 |
Non-layered Gneiss
|
Potassium feldspar-amphibole-biotite (?) gneiss. Poorly developed banding. See also M-157. |
|
0 |
Ritter 154, 24 B |
| GRD02EYS0 |
Non-layered Gneiss
|
Potassium feldspar-amphibole-biotite (?) gneiss. Poorly developed banding. See also M-158. |
|
0 |
Camp Elliott |
| GRD02EZS0 |
Mafic
|
Granular olivine, feldspar, and garnet. Original description: Metadiabase. |
New York |
0 |
Ritter 154, 14 H |
| GRD02F0S0 |
Quartzofeldspathic
|
Coarse-grained wollastonite-plagioclase-quartz (trace). Original description: Calcite-wollastonite skarn. |
|
0 |
Ritter 154, 14 K |
| GRD02F2S0 |
Relict Textures
|
Non-foliated rock with concentric structure. Medium-grained plagioclase-quartz-chlorite-biotite (trace). |
California |
0 |
Ritter 154, 24 H |
| GRD02F3S0 |
Non-layered Gneiss
|
Plagioclase-quartz-biotite-magnetite (trace) gneiss. Original description: Deformed granite. |
|
1 |
Ritter 154, 14 A |
| GRD02F5S0 |
Serpentinite
|
Dark serpentinite with light green band and veinlets. Some quartz in the lighter parts? Original description: Serpentine. Verde Antique. |
|
0 |
Ritter 154, 14 M |
| GRD02F6S0 |
Serpentinite
|
Contact between dark serpentinite with light green asbestiform amphibole. Some pyrite. Original description: Asbestiform amphibole (actinolite -tremolite?) |
|
1 |
Ritter 154, 14 M |
| GRD02H8S0 |
Phyllite
|
Slab of dark grey phyllite. Some slight crenulations. |
California |
0 |
Camp Elliott |
| GRD02H9S0 |
Blueschist
|
Blueschist. Lithic-rich. Billet. Original label: Semischist, Patrick Point. |
California |
1 |
Ritter 154, 24 D |
| GRD02HAS0 |
Schist
|
Schistose chert. Large, green folded chert. Original label: Schist. S. Fork unit. |
California |
1 |
Camp Elliott |
| GRD02HBS0 |
Schist
|
Fine-grained quartz schist. Original label: Schist. S. Fork unit. |
California |
1 |
Camp Elliott |
| GRD02HCS0 |
Marble
|
Highly recrystallized limestone/marble. Dark grey with white calcite veins. Billet. |
California |
0 |
Camp Elliott |
| GRD02HSS0 |
Schist
|
Well-foliated layers; alternating bands of carbonate. Small sample. Billet. |
California |
0 |
Camp Elliott |
| GRD02J6S0 |
Impact Breccia
|
impact breccia (Onaping formation; meteor impact fallback breccia) |
Canada |
0 |
Ritter 154, 17 P |
| GRD02JBS0 |
Non-layered Gneiss
|
gneiss (leucocratic granulite : pinkish white quartzofeldspathic gneiss; Q, perthite (Kspar) with minor accessory apatite, zircon, OPX, CPX, biotite, hornblende, oxides. Feldspars are altered to white mica and epidote resulting in the distinctive pink appearance. Originally granulite metamorphism subjected to later hydrothermal alteration) |
Virginia |
0 |
Ritter 154, 24 A |
| GRD02JBS1 |
Non-layered Gneiss
|
gneiss (leucocratic granulite : pinkish white quartzofeldspathic gneiss; Q, perthite (Kspar) with minor accessory apatite, zircon, OPX, CPX, biotite, hornblende, oxides. Feldspars are altered to white mica and epidote resulting in the distinctive pink appearance. Originally granulite metamorphism subjected to later hydrothermal alteration) |
Virginia |
0 |
Camp Elliott |
| GRD02JES0 |
Blueschist
|
Nice blueschist hand sample and thin section. Large sparrite vein in both. |
|
1 |
Ritter 154, 14 D |
| GRD02N1S0 |
Phyllite
|
Phyllite with quartz lenses and occasional Fe-oxides. Original description: Fine-grained gneiss. |
|
0 |
Ritter 154, 14 E |
| GRD02N4S0 |
Layered Gneiss
|
Mylonitic gneiss with delta clasts. Lineations on bottom of the sample. Original description: Flaser gneiss interlayered with metasediments. |
California |
3 |
Ritter 154, 3 G |
| GRD02N5S0 |
Marble
|
Coarsely crystalline grey marble. With 2-5 mm layering of course and medium grained crystals |
California |
4 |
Ritter 154, 3 G |
| GRD02NES0 |
Ga-bearing Schist
|
Dark, foliated sample. Folded. Quartz-pyroxene- phyllosilicates-plagioclase-garnet-opaques. Original description: Metaseds. |
California |
1 |
Ritter 154, 24 H |
| GRD02NFS0 |
Eclogite
|
Original description: Eclogite, Lawsonite locality (Tiburon Uplands Nature Preserve) 2 hand samples. |
California |
5 |
Ritter 154, 3 H |
