Sample Type is Igneous › Volcanic › Intermediate Extrusive › Dacite
29 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD000US0 | Dacite | fairly altered | California | 1 | Ritter 154, 15 Q |
| GRD000WS0 | Dacite | California | 1 | Ritter 154, 15 Q | |
| GRD004XS0 | Dacite | Hakodate Summit Hokkaido | Japan | 0 | Ritter 154, 15 Q |
| GRD005CS0 | Dacite | Pyroxene dacite from avalanche deposit | Japan | 0 | Ritter 154, 15 Q |
| GRD006DS0 | Dacite | Dacite (Hb-Q), nice euhedral amphibole, multiple pieces (13 in total) | 0 | Ritter 154, 15 Q | |
| 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 |
| GRD0074S0 | Dacite | Pre-Lassen dacite with hornblende and biotite. | California | 0 | Ritter 154, 15 Q |
| GRD0078S0 | Dacite | With inclusions. Nice small Hb. Pre-1915 Lassen dacite. | California | 0 | Camp Elliott |
| GRD007CS0 | Dacite | 2 small hand samples. | California | 0 | Camp Elliott |
| GRD007KS0 | Dacite | East flow, Glass Mountain, Obsidian | California | 0 | Camp Elliott |
| GRD007LS0 | Dacite | Inclusion in I-283. Two small hand samples. | California | 0 | Camp Elliott |
| GRD007MS0 | Dacite | Medicine Flow. Small hand sample. | California | 0 | Camp Elliott |
| GRD007PS0 | Dacite | Dacite, glassy, TSB only, Llao rock. Small hand sample. | Oregon | 0 | Ritter 154, 15 Q |
| GRD00BES0 | Dacite | TSB only. | Colorado | 0 | Camp Elliott |
| GRD00ILS0 | Dacite | Dacite (Hb-Q), nice euhedral amphibole, multiple pieces (13 in total) | 0 | Ritter 154, 15 Q | |
| GRD02QSS0 | Dacite | Likely from avalanche deposit. Has biotite and amphibole. | 0 | Ritter 154, 15 Q | |
| GRD02QUS0 | Dacite | Very fresh phenocrysts. Plag-euhedral, Quartz is rounded. | California | 1 | Ritter 154, 15 Q |
| GRD02QZS0 | Dacite | California | 1 | Ritter 154, 29 D | |
| GRD02RVS0 | Dacite | Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered | Dacite Porphyry, Morro Bay, San Luis Obispo | 3 | Ritter 154, 3 E |
| GRD02RVS1 | Dacite | Morro Rock. Zoned Plagioclase(approx 0.5 cm), Biotite, Quartz rich groundmass. Moderately altered | California | 3 | Ritter 154, 15 Q |
| GRD02TFS0 | Dacite | Zoned Plagioclase phenocrysts. Avalanche deposit, devastated area. Collected 9/20/99 | California | 1 | Ritter 154, 29 D |
| GRD02U8S0 | Dacite | Rhyolite/Dacite Avalanche deposit 9/20/99 | California | 1 | Ritter 154, 29 D |
| GRD02VRS0 | Dacite | Dense - sheared, epidote(?) | California | 0 | Camp Elliott |
| GRD02WDS0 | Dacite | California | 1 | Ritter 154, 29 C | |
| GRD041SS0 | Dacite | Puerto Rico | 0 | Ritter 154, 29 L | |
| GRD04ABS0 | Dacite | Chlorite replacement of pyroxene. Sericitized pyroxene. Large complex phenocrysts. | Philippines | 1 | Ritter 154, 28 G |
| GRD04ADS0 | Dacite | Philippines | 0 | Camp Elliott |