Sample Type is Igneous › Volcanic › Intermediate Extrusive
133 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| GRD007PS0 | Dacite | Dacite, glassy, TSB only, Llao rock. Small hand sample. | Oregon | 0 | Ritter 154, 15 Q |
| GRD007US0 | Andesite | pink with plag phenocrysts | Oregon | 0 | Ritter 154, 16 B |
| GRD00AFS0 | Andesite | Porphyritic. Abundant feldspar laths in dense brown matrix. Original label: Volcaniclastic? | California | 0 | Ritter 154, 16 B |
| GRD00B9S0 | Andesite | TSB only. | Colorado | 0 | Camp Elliott |
| GRD00BDS0 | Andesite | TSB only. | Colorado | 0 | Camp Elliott |
| GRD00BES0 | Dacite | TSB only. | Colorado | 0 | Camp Elliott |
| GRD00BLS0 | Andesite | TSB only | Colorado | 0 | Camp Elliott |
| GRD00BNS0 | Andesite | TSB Only | Colorado | 0 | Camp Elliott |
| GRD00GQS0 | Andesite | Altered andesite porphyry. Thin section in Wards Micro Slides box in RH 154. | Colorado | 1 | Camp Elliott |
| GRD00ILS0 | Dacite | Dacite (Hb-Q), nice euhedral amphibole, multiple pieces (13 in total) | 0 | Ritter 154, 15 Q | |
| GRD00JIS0 | Andesite | altered, Plag-phyric andesite | Cascades | 0 | Ritter 154, 16 B |
| GRD01YZS0 | Andesite | Small green sample. Teal/blueish mineralization in hand sample. Original label: 8 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01Z5S0 | Andesite | Small brown sample. Glomerocrysts of plagioclase visible in hand sample. Original label: 8 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01Z6S0 | Andesite | Small cut sample of a greenish extrusive rock. Original label: 9 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01Z7S0 | Andesite | Small cut greenish extrusive pebble. Original label: 9 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01Z9S0 | Andesite | Brown fine-grained sample with white clusters (glomerocrysts of feldspar and sphene). Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| GRD01ZBS0 | Andesite | Small cut sample. Dense rock with Fe-minerals and staining. Original label: 10 November, 1980. | Pacific Ocean | 1 | Ritter 154, 37 A |
| 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 |
| GRD02QSS0 | Dacite | Likely from avalanche deposit. Has biotite and amphibole. | 0 | Ritter 154, 15 Q |