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Sample C-987
NavDat sample number 4493 · RHYOLITE
Sample
| Sample ID | C-987 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.893 |
|---|
| Longitude | -106.913 |
|---|
| Location | La Garita Mtns., dump at Outlet Tunnel |
|---|
| 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 | | WT% | XRF |
| TIO2 | 0.54 | | WT% | XRF |
| AL2O3 | 16.2 | | WT% | XRF |
| FE2O3 | 4.28 | | WT% | XRF |
| MGO | 1.14 | | WT% | XRF |
| CAO | 3.1 | | WT% | XRF |
| NA2O | 3.27 | | WT% | XRF |
| K2O | 5.17 | | WT% | XRF |
| P2O5 | 0.21 | | WT% | XRF |
| MNO | 0.09 | | WT% | XRF |
| LOI | 2.96 | | WT% | XRF |
| TOTAL | 100 | | WT% | XRF |
