| GRD00FRS0 |
Dunite
|
Dunite with trace spinel and layer of biotite. |
|
0 |
Ritter 154, 16 K |
| GRD00FSS0 |
Pegmatite
|
Graphic granite (Q-Kp-Albite?). Polished. |
|
0 |
Ritter 154, 16 P |
| GRD00FTS0 |
Dunite
|
dunite |
New York |
0 |
Ritter 154, 16 R |
| GRD00FUS0 |
Gabbro
|
Original description: Quartz gabbro (Aug-Plag-Q). |
California |
0 |
Ritter 154, 16 C |
| GRD00FVS0 |
Gabbro
|
Original description: Leucogabbro (Bytownite-Px). |
Minnesota |
0 |
Ritter 154, 16 C |
| GRD00FWS0 |
Granite
|
granite (Ks>Pl, Q-Hb-Bi) |
|
0 |
Ritter 154, 19 C |
| GRD00FXS0 |
Syenite
|
Syenite with stringers of olivine-pyroxene-mica. Probably assimilation by syenite melt. Original description: Syenite (Q-Pl-Ks-Bi). |
New York |
0 |
Ritter 154, 15 C |
| GRD00FYS0 |
Ignimbrite
|
Original description: Rhyolite tuff (lithics-pumice-Q). |
Idaho |
0 |
Ritter 154, 19 J |
| GRD00FZS0 |
Ignimbrite
|
rhyolite tuff (lithics-pumice-Q) |
|
0 |
Camp Elliott |
| GRD00G0S0 |
Granite
|
medium grained granite (Q-Pl-Ks-Hb-Bi) |
|
0 |
Ritter 154, 15 A |
| GRD00G1S0 |
Scoria
|
scoriaceous basalt |
Samoa |
0 |
Ritter 154, 15 J |
| GRD00G2S0 |
Syenite
|
Hb syenite (Ks-Hb-Bi) |
California |
0 |
Ritter 154, 15 C |
| GRD00G3S0 |
Granite
|
medium grained, fresh granite (Ks>Pl, Q-Bi) |
|
0 |
Ritter 154, 19 B |
| GRD00G4S0 |
Syenite
|
syenite (Ks-Q-Bi minor Plag) |
|
0 |
Ritter 154, 15 D |
| GRD00G5S0 |
Igneous Structures
|
orbicular granite |
|
0 |
Ritter 154, 16 R |
| GRD00G6S0 |
Basalt
|
glassy scoriaceous basalt |
|
0 |
Camp Elliott |
| GRD00G7S0 |
Granodiorite
|
Granodiorite. Original description: Pl-Ks-Q-Bi-augite. |
2 mi W of Bills Lake |
0 |
Camp Elliott |
| GRD00G8S0 |
Syenite
|
Px syenite (definitely some plag) |
|
0 |
Ritter 154, 15 D |
| GRD00G9S0 |
Pumice
|
Pumice from 15.5 ka explosive eruption at bottom of Lake Bonneville |
Utah |
1 |
Ritter 154, 15 J |
| GRD00G9S1 |
Pumice
|
Pumice from 15.5 ka explosive eruption at bottom of Lake Bonneville |
Utah |
1 |
Ritter 154, 15 J |
| GRD00GAS0 |
Ignimbrite
|
Phonolite tuff. Associated with large ore bodies at Cripple Creek. Thin section in Wards black Micro Slides box in Ritter 154. |
Colorado |
1 |
Camp Elliott |
| GRD00GBS0 |
Rhyolite
|
Very altered rhyolite from 595 Ma Lynn-Mattapan volcanic complex. Thin section in Wards Micro Slides box in Ritter 154. |
Massachusetts |
1 |
Camp Elliott |
| GRD00GCS0 |
Rhyolite
|
Rhyolite with flow bands. Minerals include topaz, spessartine, quartz, sanidine. |
Colorado |
1 |
Ritter 154, 15 G |
| GRD00GDS0 |
Ignimbrite
|
Wall Mtn tuff. Also known as Castle Rock rhyolite. Rhyolite (San-Pla-Bi-Mt-Q) tuff. |
Colorado |
1 |
Ritter 154, 15 K |
| GRD00GES0 |
Ignimbrite
|
Rhyolite tuff (prominent smoky Q-San-Olig-Ga-Topaz) |
Colorado |
1 |
Ritter 154, 15 K |
| GRD00GFS0 |
Rhyolite
|
altered black porphyritic rhyolite. Part of Marblehead Neck volcanic plug (dark fine grained rhyolite and lighter volcanic breccias) |
Massachusetts |
1 |
Ritter 154, 15 G |
| GRD00GGS0 |
Granite
|
Quincy alkali granite. Microperthitic Kspar, zoned Plag, CPX (riebeckite and aegirine), Amph, interstitial Q and Apatite. |
Massachusetts |
1 |
Ritter 154, 15 A |
| GRD00GHS0 |
Granite
|
hornblende granite (light grey Kspar, Plag, Q, Hb, Biotite, magnetite, pyrite, allanite, fluorite, zircon, apatite) Missing thin section. |
Massachusetts |
0 |
Ritter 154, 15 A |
| GRD00GIS0 |
Granite
|
aplitic granite (Q-micro-Or-Plag-Bi) Missing thin section |
Colorado |
0 |
Ritter 154, 15 A |
| GRD00GJS0 |
Trachyte
|
trachyte (Ks-Plag-Bi), 2 large hand samples. |
Colorado |
0 |
Ritter 154, 15 H |
