| GRD006FS0 |
Ignimbrite
|
300 below top. |
California |
1 |
Ritter 154, 15 K |
| GRD006GS0 |
Welded Ignimbrite
|
350 below top. Grey with brown fiamme. |
California |
1 |
Ritter 154, 15 L |
| GRD006HS0 |
Welded Ignimbrite
|
400 below top. Black fiamme. |
California |
1 |
Ritter 154, 15 L |
| GRD006IS0 |
Basalt
|
|
California |
1 |
Ritter 154, 16 G |
| GRD006JS0 |
Basalt
|
Nice vesicle fillings, phenocryst-rich. |
California |
0 |
Ritter 154, 16 G |
| GRD006KS0 |
Basalt
|
|
California |
1 |
Ritter 154, 16 H |
| GRD006LS0 |
Andesite
|
pyroxene, plag, hornblende phenocrysts |
California |
0 |
Ritter 154, 16 A |
| GRD006MS0 |
Rhyolite
|
Vitrophyric dome. Multiple small samples. |
California |
1 |
Ritter 154, 15 F |
| GRD006NS0 |
Basalt
|
|
California |
0 |
Camp Elliott |
| GRD006OS0 |
Rhyolite
|
Glassy rhyolite from dome. |
California |
0 |
Ritter 154, 15 F |
| GRD006PS0 |
Rhyolite
|
glassy |
California |
0 |
Camp Elliott |
| GRD006QS0 |
Andesite
|
Mt. Pelee 1902 Avalanche deposit. Could be block from block and ash flow. Original description: Hypersthene, vitrophyre tuff. |
Mt. Pelee, Martinique, Antilles |
0 |
Ritter 154, 16 A |
| GRD006RS0 |
Andesite
|
Mt. Pelee 1902 dome |
Mt. Pelee, Martinique, Antilles |
0 |
Ritter 154, 16 A |
| GRD006SS0 |
Andesite
|
andesite with inclusions, from Mt. Pelee 1902 dome |
Mt. Pelee, Martinique, Antilles |
0 |
Ritter 154, 16 B |
| GRD006TS0 |
Andesite
|
1930 dome |
Mt. Pelee, Martinique, Antilles |
0 |
Ritter 154, 16 B |
| GRD006US0 |
Andesite
|
Fresh sample with large euhedral doubly terminated hypersthene crystals. |
Mt. Pelee, Martinique, Antilles |
0 |
Ritter 154, 16 B |
| GRD006VS0 |
Andesite
|
|
France |
0 |
Ritter 154, 16 B |
| GRD006WS0 |
Basalt
|
Original description: Olivine-augite basalt. |
France |
0 |
Ritter 154, 20 F |
| GRD006XS0 |
Andesite
|
Original description: Hypersthene-hornblende andesite. |
Martinique, Antilles |
0 |
Ritter 154, 19 H |
| GRD006YS0 |
Andesite
|
Very fine-grained with olivine and pyroxene |
Saint Vincent & the Grenadines |
0 |
Ritter 154, 19 H |
| GRD006ZS0 |
Gabbro
|
1902 eruption of Sufriere. Originial classification: UM xenolith. |
Saint Vincent & the Grenadines |
0 |
Ritter 154, 16 C |
| GRD0070S0 |
Dacite
|
Hb-Plag-Bi(Phlog) Two samples with same number that may be related. Dacite and Granodiorite. One is pumiceous while the other is more crystal-rich. |
California |
0 |
Ritter 154, 15 Q |
| GRD0071S0 |
Dacite
|
Hornblende dacite with inclusions. |
California |
0 |
Ritter 154, 15 Q |
| GRD0072S0 |
Dacite
|
Hb dacite with inclusions |
California |
0 |
Ritter 154, 15 Q |
| GRD0073S0 |
Andesite
|
Fine-grained with microphenocrysts of plag and pyroxene. |
California |
0 |
Ritter 154, 16 B |
| GRD0074S0 |
Dacite
|
Pre-Lassen dacite with hornblende and biotite. |
California |
0 |
Ritter 154, 15 Q |
| GRD0075S0 |
Andesite
|
Brokeoff andesite |
California |
0 |
Ritter 154, 19 H |
| GRD0076S0 |
Andesite
|
Brokeoff andesite |
California |
0 |
Ritter 154, 19 H |
| GRD0077S0 |
Andesite
|
1915 lava, TSB only |
California |
0 |
Ritter 154, 19 H |
| GRD0078S0 |
Dacite
|
With inclusions. Nice small Hb. Pre-1915 Lassen dacite. |
California |
0 |
Camp Elliott |
