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Sample May-77
NavDat sample number 16013 · TRACHYANDESITE
Sample
| Sample ID | May-77 |
|---|
| Rock name | TRACHYANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | outer ignimbrites |
|---|
Location
| Latitude | 32.9567 |
|---|
| Longitude | -114.558 |
|---|
| Location | Picacho region,Chocolate Mtns |
|---|
| State / province | California |
|---|
| Volcanic field | Picacho Volcanics |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 25.3 |
|
23.2 |
27.4 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 59.95 | | WT% | XRF |
| TIO2 | 0.86 | | WT% | XRF |
| AL2O3 | 17.26 | | WT% | XRF |
| FEO | 5.44 | | WT% | XRF |
| MNO | 0.1 | | WT% | XRF |
| MGO | 3.35 | | WT% | XRF |
| CAO | 6.02 | | WT% | XRF |
| NA2O | 3.55 | | WT% | XRF |
| K2O | 2.77 | | WT% | XRF |
| TOTAL | 99.3 | | WT% | XRF |
