← Search
Sample S-9
NavDat sample number 7172 · RHYOLITE
Sample
| Sample ID | S-9 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Collected by | H.F. Bonham, Nevada Bureau of Mines and Geology and M.L. Silberman, U.S. Geological Survey. |
|---|
| Comment | Rhyolite ash-flow tuff, tuff of Piute Creek. Three cooling units, pale red to light gray, 5 to 10% phenocrysts of glassy sanidine 60-65%, plagioclase 35%, biotite 1-5%, traces of quartz and hornblende; pervasive vapor phase crystallization in upper parts of cooling units. Age probably minimum. The tuff of Piute Creek unconformably underlies the tuff of Coyote Spring sample S-6. |
|---|
Location
| Latitude | 39.7644 |
|---|
| Longitude | -119.558 |
|---|
| Location | Washoe Co., NV |
|---|
| State / province | Nevada |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 28.6 |
|
27.7 |
29.5 |
|
C.L. Connor and M.L. Silberman, U.S. Geological Survey. |
Analyses
No chemical analyses are stored for this sample.
