Sample Type is Igneous › Volcanic › Intermediate Extrusive
133 records | Download| IGSN | Sample Type | Notes | Location | Number Thin Sections | Storage Location |
|---|---|---|---|---|---|
| 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 |
| GRD046CS0 | Intermediate Extrusive | Ohanepecosch formation. Plagioclase rich flow with amphibole | Washington | 2 | Ritter 154, 16 H |
| GRD047IS0 | Andesite | A few plagioclase and brown amphibole phenocrysts in a plagioclase amphibole groundmass. Both minerals are zoned and filled with inclusions. Seven clusters of ep and cpx. | Philippines | 1 | Ritter 154, 28 G |
| GRD048PS0 | Andesite | Highly altered. Plag porphyritic. | Philippines | 1 | Ritter 154, 28 G |
| GRD048US0 | Andesite | Thin section does not match. | Philippines | 1 | Camp Elliott |
| GRD04ABS0 | Dacite | Chlorite replacement of pyroxene. Sericitized pyroxene. Large complex phenocrysts. | Philippines | 1 | Ritter 154, 28 G |
| GRD04ADS0 | Dacite | Philippines | 0 | Camp Elliott | |
| GRD04AFS0 | Andesite | Fresh andesite with biotite, hornblende, plagioclase. | Philippines | 1 | Ritter 154, 28 G |
| GRD04BQS0 | Andesite | Philippines | 1 | Camp Elliott | |
| GRD04CAS0 | Andesite | 10E may be 11E | Philippines | 0 | Camp Elliott |
| GRD04CTS0 | Andesite | Altered andesite cobble. | Philippines | 0 | Camp Elliott |