| GRD000FS0 |
Quartzite
|
Fine-grained grey quartzite with a Fe-rich red crust. Original description: pyritiferous feldspathic quartzite. |
California |
1 |
Ritter 154, 14 L |
| GRD0015S0 |
Quartzite
|
Metamorphosed quartz sandstone (minor plag), partially recrystallized. |
California |
1 |
Ritter 154, 14 L |
| 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 |
| GRD01YIS0 |
Quartzite
|
Mariposite Marble. Quartzite with green mineralization and large white veins. Original description: fuchsite- and mariposite- bearing rock. Billet. See also M-363. |
California |
0 |
Ritter 154, 14 L |
| GRD01YIS1 |
Quartzite
|
Mariposite Marble. Quartzite with green mineralization and large white veins. Original description: fuchsite- and mariposite- bearing rock. Billet. See also M-363. |
California |
0 |
Ritter 154, 24 F |
| GRD01YJS0 |
Quartzite
|
Mariposite Marble. Quartzite with green mineralization and large white veins. Original description: fuchsite- and mariposite- bearing rock. Billet. See also M-418. |
California |
0 |
Ritter 154, 24 F |
| GRD01ZVS0 |
Quartzite
|
Pink, medium-grained quartzite with red lenses of Fe-oxide mineralization (likely along fractures). Billet. |
|
0 |
Ritter 154, 14 L |
| GRD01ZWS0 |
Quartzite
|
Fine- to medium-grained white quartzite with some molybdenite along a fracture/surface. Original description: molybdenite-bearing quartzite. |
|
0 |
Ritter 154, 14 L |
| GRD01ZXS0 |
Quartzite
|
Large sample of pink fine- to medium-grained quartzite with white coarse-grained wollastonite inclusion. Occasional black flecks along margin of the inclusion. |
|
0 |
Ritter 154, 24 M |
| GRD020MS0 |
Quartzite
|
Dark grey quartzite with some Fe-oxide stains along fractures. Somewhat sugary appearance. |
|
0 |
Ritter 154, 24 F |
| GRD02C4S0 |
Quartzite
|
Small, unremarkable sample of quartzite. Faint bedding. Light grey. Not cut. |
France |
0 |
Camp Elliott |
| GRD02O3S0 |
Quartzite
|
Two slabs slightly bedded quartzite. |
California |
3 |
Ritter 154, 14 L |
| GRD02O4S0 |
Quartzite
|
Two very different samples. One is a dark fine-grained marble. The other is a light fine-grained marble. Original description: Marble. Schist pendant. |
California |
1 |
Camp Elliott |
| GRD02O5S0 |
Quartzite
|
Fine-grained quartzite. Original description: Siliceous schist. Schist pendant. |
California |
2 |
Camp Elliott |
| GRD02OIS0 |
Quartzite
|
Very small sample of fine-grained gray and Fe-stained quartzite. |
California |
3 |
Ritter 154, 14 L |
| GRD02OJS0 |
Quartzite
|
Very small sample of fine-grained gray and Fe-stained quartzite. Faint laminations. |
California |
3 |
Ritter 154, 14 L |
| GRD02PHS0 |
Quartzite
|
Two large samples of kyanite-bearing quartzite. |
California |
2 |
Ritter 154, 3 H |
| GRD02SES0 |
Quartzite
|
Medicine Peak Quartzite. PE quartzite with some preserved crossbedding, kyanite bearing in places. |
Rt 130 near Mirror Lake in Snowy Range |
0 |
Ritter 154, 24 F |
| GRD02UHS0 |
Quartzite
|
Quartzite. ES-152 field trip |
California |
1 |
Camp Elliott |
| GRD02UPS0 |
Quartzite
|
Small sample of sugary quartzite with orange staining. Original Label: Shoofly Formation. GSA field trip 1999. Calc-Silicate Gneiss(?). |
California |
1 |
Camp Elliott |
| GRD02UTS0 |
Quartzite
|
Cadiz Quartzite. Medium-coarse grained, sub angular grains with hematite films between grains. Original description-Lower Cambrian quartzite. |
California |
3 |
Camp Elliott |
| GRD02WMS0 |
Quartzite
|
Meta-quartzite, intensely sheared, flattened and recrystallized. Muscovite has formed on shear planes. Protolith would have been nearly pure quartz sand with minor clay to form the muscovite |
California |
1 |
Camp Elliott |
| GRD02WXS0 |
Quartzite
|
Quartzite with relict bedding |
California |
0 |
Ritter 154, 14 L |
| GRD0416S0 |
Quartzite
|
Stirling Formation. |
California |
0 |
Ritter 154, 14 L |
