Sample Type is Igneous › Volcanic › Intermediate Extrusive › Andesite
97 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD01ZDS0 | Andesite | Small cut sample. Green with white glomerocrysts. Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZHS0 | Andesite | Grey rock with white plagioclase laths/glomerocrysts. Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZIS0 | Andesite | Small greenish porphyritic extrusive sample with large, dark plagioclase laths/glomerocrysts. Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZJS0 | Andesite | Greenish and Fe-stained, prophyritic sample. Small plagioclase laths visible on cut surface. Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZKS0 | Andesite | Greenish and Fe-stained sample. Porphyritic: small white plagioclase laths visible on cut surface. Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZMS0 | Andesite | Large (~12 cm x 4.5 cm), cut sample. Dark green, fine-grained. Patchy Fe-Mn crust. Original label: 14 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZNS0 | Andesite | Cut, small (~4 cm), dark green, very fine-grained. Lighter rim around edge of sample (alteration?). Patchy Fe-Mn crust on sample. Billet pieces. Original label: 14 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD022VS0 | Andesite | Three small (~4x3 cm on the cut surface) samples. Light green-grey groundmass with Fe-stained spots and Fe-Mn crust on sample. Billet. Original label: 25 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 C |
| GRD026QS0 | Andesite | Small bag of three very small cut pieces. Grey fine-grained groundmass with black lath-like crystals. | Pacific Ocean | 1 | Ritter 154, 37 F |
| GRD0286S0 | Andesite | Two large purple samples with white wispy lenses (quartz?) and grey-black spots. Largest sample measures ~10x6x6 cm. Several small billet pieces. Original label: 21 October, 1967, Section cut Nov 1967. | Pacific Ocean | 0 | Ritter 154, 37 H |
| GRD02N7S0 | Andesite | Amphibole-Plagioclase-phyric, speckled black and gray, massive seriate Andesite. Sub/Euhedral prismatic Amphibole (1-3 mm), sub/euhedral plagioclase (1-5 mm). Original Description: Andesite bearing large feldspar and amphibole crystals. 6/7 thin sections present | California | 7 | Ritter 154, 3 F |
| GRD02PYS0 | Andesite | Porphyritic Andesite. Large plagioclase and small amphibole crystals in grey groundmass. Original label: Hypabyssal actually phyre. Vitrophyre. | California | 2 | Ritter 154, 16 B |
| 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 |
| GRD02U3S0 | Andesite | Plag rich Andesite dike cutting Sailor Creek formation (lower-mid J) | California | 1 | Ritter 154, 16 A |
| GRD02V9S0 | Andesite | Porphyritic Andesite. See SR 78a | California | 0 | Camp Elliott |
| GRD02WGS0 | Andesite | Good thin section. Unremarkable hand sample. Plagioclase rich | California | 1 | Ritter 154, 29 C |
| GRD02WJS0 | Andesite | Gray/green andesite/vitrophyre with quartz and feldspar phenocrysts | California | 1 | Ritter 154, 16 A |
| GRD02X9S0 | Andesite | Basaltic Andesite | California | 2 | Ritter 154, 16 G |
| GRD02X9S1 | Andesite | Basaltic Andesite | California | 2 | Camp Elliott |
| GRD041WS0 | Andesite | Andesite | Puerto Rico | 0 | Ritter 154, 29 L |
| GRD0430S0 | Andesite | Plagioclase and Pyroxene bearing andesite. | Mexico | 2 | Ritter 154, 16 A |
| GRD0433S0 | Andesite | Hornblende Diorite Porphyry. Bull Mountain Bysmalith. Dynamited boulder from roadside | Utah | 2 | Ritter 154, 16 B |
| GRD0434S0 | Andesite | Hornblende Diorite Porphyry. Large euhedral hornblende. Float, Bull Creek. | Utah | 4 | Ritter 154, 3 D |
| GRD043AS0 | Andesite | Hornblende Andesite Porphyry | France | 0 | Ritter 154, 20 C |
| GRD043AS1 | Andesite | Hornblende Andesite Porphyry | France | 0 | Ritter 154, 20 C |
| GRD0447S0 | Andesite | sparsely phyric andesite? from Ossippee Mtn complex | New Hampshire | 0 | Ritter 154, 29 E |
| GRD0447S1 | Andesite | phyric andesite? from Ossippee Mtn complex | New Hampshire | 0 | Ritter 154, 29 E |
| GRD046AS0 | Andesite | Washington | 6 | Ritter 154, 16 B | |
| GRD046BS0 | Andesite | Plag and Amphibole bearing | Oregon | 2 | Ritter 154, 16 B |