| GRD02QCS1 |
Granite
|
Sherman Granite (Kspar,Q,Plag,Hb,Bi) |
Wyoming |
0 |
Ritter 154, 19 B |
| GRD02QCS2 |
Granite
|
Sherman Granite (Kspar,Q,Plag,Hb,Bi) |
Wyoming |
0 |
Ritter 154, 19 B |
| GRD02QCS3 |
Granite
|
Sherman Granite (Kspar,Q,Plag,Hb,Bi) |
Wyoming |
0 |
Ritter 154, 19 B |
| GRD02QCS4 |
Granite
|
Sherman Granite (Kspar,Q,Plag,Hb,Bi) |
Wyoming |
0 |
Ritter 154, 19 B |
| GRD02QDS0 |
Granite
|
Muscovite biotite granite, fine grained. |
|
0 |
Ritter 154, 19 C |
| GRD02QES0 |
Granite
|
aplitic granite, very fine grained, |
Boulder County, Colorado. West of Boulder |
0 |
Ritter 154, 15 B |
| GRD02QHS0 |
Obsidian
|
Obsidian Salton domes(obsidian butte), Salton Sea |
California |
1 |
Ritter 154, 15 M |
| GRD02QIS0 |
Syenite
|
Possibly potassic shonkinite to syenite series. Seems identical to I-663 |
California |
2 |
Ritter 154, 15 D |
| GRD02QJS0 |
Syenite
|
Possibly potassic shonkinite to syenite series, fine grained |
California |
2 |
Ritter 154, 15 D |
| GRD02QKS0 |
Granite
|
Medium to coarse grained |
California |
1 |
Ritter 154, 15 B |
| GRD02QLS0 |
Ignimbrite
|
Collected 1955. Lithic fragments, pumice, quartz and feldspar phenocryst |
California |
1 |
Ritter 154, 15 K |
| GRD02QMS0 |
Rhyolite
|
Flow banded rhyolite |
California |
0 |
Ritter 154, 15 L |
| GRD02QNS0 |
Granodiorite
|
Mt. Stuart batholith |
Washington |
0 |
Ritter 154, 19 K |
| GRD02QOS0 |
Granodiorite
|
May contain enough Quartz to classify as Tonalite |
Washington |
0 |
Ritter 154, 15 P |
| GRD02QPS0 |
Granite
|
|
California |
4 |
Ritter 154, 15 B |
| GRD02QQS0 |
Diorite
|
50% plag, 15% hornblend, 20% quartz,10% biotite, 3% Kspar, 2% sphene and ap. Some opaques. |
California |
1 |
Ritter 154, 19 E |
| GRD02QRS0 |
Granodiorite
|
Plag>quartz>amphibole Accessory minerals: Oxide, chlorite, K-spar |
Fiji |
3 |
Ritter 154, 19 K |
| GRD02QSS0 |
Dacite
|
Likely from avalanche deposit. Has biotite and amphibole. |
|
0 |
Ritter 154, 15 Q |
| GRD02QTS0 |
Diorite
|
|
California |
2 |
Ritter 154, 15 P |
| GRD02QUS0 |
Dacite
|
Very fresh phenocrysts. Plag-euhedral, Quartz is rounded. |
California |
1 |
Ritter 154, 15 Q |
| GRD02QVS0 |
Andesite
|
Plag-hornblend phyric andesite |
California |
1 |
Ritter 154, 16 B |
| GRD02QWS0 |
Andesite
|
Plag porphorite Andesites |
5 Lakes Trail at road to Alpine Meadows ski area Rte 89 |
1 |
Ritter 154, 16 B |
| GRD02QXS0 |
Granodiorite
|
Probably typical of the main rock type here |
US-40 Donner Pass 8/99 approximately at bridge, overlook |
1 |
Ritter 154, 15 O |
| GRD02QYS0 |
Diorite
|
|
California |
5 |
Ritter 154, 15 P |
| GRD02QZS0 |
Dacite
|
|
California |
1 |
Ritter 154, 29 D |
| GRD02R0S0 |
Mafic Intrusive
|
Gabbro Norite with shear zone showing cataclasis. Original Description: Layered Gabbro/Troctolite. |
California |
2 |
Ritter 154, 16 D |
| GRD02R1S0 |
Mafic Intrusive
|
Wehrlite, may contain enough Opx to be considered Lherzolite. Original Description: Mela-Norite Dike cutting Calif 1237 and Calif 1238 |
California |
2 |
Ritter 154, 16 D |
| GRD02R2S0 |
Anorthosite
|
Medium grained plagioclase, amphibole rich. |
California |
0 |
Ritter 154, 16 C |
| GRD02R3S0 |
Gabbro
|
Hb gabbro; part of meter scale dike with very large amphibole crystals perpendicular to the margin. 3-6 cm Hb crystals with altered plagioclase. Slightly fractured. |
California |
0 |
Ritter 154, 16 C |
| GRD02R4S0 |
Gabbro
|
|
California |
0 |
Ritter 154, 20 B |
