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Sample BH91SB-71
NavDat sample number 38374 · RHYOLITE
Sample
| Sample ID | BH91SB-71 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Collected by | DONNELLY-NOLAN, JULIE |
|---|
| Comment | Extrusive rock Porph/aphanitic Plag dom/Q |
|---|
Location
| Latitude | 39.2425 |
|---|
| Longitude | -121.814 |
|---|
| Location | STAR THISTLE RHYOLITE DOME |
|---|
| State / province | California |
|---|
| Volcanic field | Sutter Buttes volcanics |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 1.56 |
|
1.36 |
1.59 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 69.5 | | WT% | XRF |
| AL2O3 | 16.2 | | WT% | XRF |
| MGO | 0.61 | | WT% | XRF |
| CAO | 2.62 | | WT% | XRF |
| NA2O | 4.42 | | WT% | XRF |
| K2O | 3.02 | | WT% | XRF |
| TIO2 | 0.23 | | WT% | XRF |
| P2O5 | 0.15 | | WT% | XRF |
| MNO | 0.05 | | WT% | XRF |
| FE2O3T | 1.83 | | WT% | XRF |
| TOTAL | 98.63 | | WT% | XRF |
