Sample Type is Igneous › Volcanic › Intermediate Extrusive › Andesite
97 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| 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 | |
| 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 |
| GRD0073S0 | Andesite | Fine-grained with microphenocrysts of plag and pyroxene. | California | 0 | Ritter 154, 16 B |
| 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 |
| GRD0079S0 | Andesite | Inclusions. TSB only. | California | 0 | Ritter 154, 19 H |
| GRD007AS0 | Andesite | California | 0 | Ritter 154, 19 H | |
| GRD007BS0 | Andesite | California | 0 | Ritter 154, 19 I | |
| GRD007ES0 | Andesite | California | 0 | Ritter 154, 19 H | |
| GRD007FS0 | Andesite | Hornblende | California | 0 | Ritter 154, 16 B |
| GRD007IS0 | Andesite | California | 0 | Ritter 154, 19 H | |
| GRD007NS0 | Andesite | Oregon | 0 | Ritter 154, 16 B | |
| GRD007OS0 | Andesite | crystal-rich | Oregon | 0 | Ritter 154, 16 B |
| 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 |
| 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 |
| 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 |