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Sample Ds 34-A
NavDat sample number 4491 · RHYOLITE
Sample
| Sample ID | Ds 34-A |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.727 |
|---|
| Longitude | -106.323 |
|---|
| Location | Hill 8,023', 2.6 km SE of E Butte |
|---|
| State / province | COLORADO |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 28.5 |
|
28.4 |
28.6 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 66.6 | | WT% | XRF |
| TIO2 | 0.57 | | WT% | XRF |
| AL2O3 | 16.3 | | WT% | XRF |
| FE2O3 | 4.01 | | WT% | XRF |
| MGO | 1.2 | | WT% | XRF |
| CAO | 3.4 | | WT% | XRF |
| NA2O | 3.6 | | WT% | XRF |
| K2O | 3.8 | | WT% | XRF |
| P2O5 | 0.18 | | WT% | XRF |
| MNO | 0.22 | | WT% | XRF |
| LOI | 0.89 | | WT% | XRF |
| TOTAL | 99.88 | | WT% | XRF |
