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Sample 27
NavDat sample number 3770 · TRACHYANDESITE
Sample
| Sample ID | 27 |
|---|
| Rock name | TRACHYANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 40.525 |
|---|
| Longitude | -105.875 |
|---|
| Location | west of Zimmerman Lake |
|---|
| State / province | Colorado |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 28 |
|
27 |
29 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 49.7 | | WT% | XRF |
| TIO2 | 2.9 | | WT% | XRF |
| P2O5 | 0.8 | | WT% | XRF |
| AL2O3 | 15.6 | | WT% | XRF |
| FE2O3 | 7.8 | | WT% | XRF |
| FEO | 3.1 | | WT% | XRF |
| CAO | 7.6 | | WT% | XRF |
| MGO | 3 | | WT% | XRF |
| NA2O | 4 | | WT% | XRF |
| K2O | 2.7 | | WT% | XRF |
| H2O | 1 | | WT% | XRF |
| TOTAL | 98.2 | | WT% | XRF |
