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Sample M278
NavDat sample number 7804 · DACITE
Sample
| Sample ID | M278 |
|---|
| Rock name | DACITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
| Comment | partially devitrified |
|---|
Location
| Latitude | 28.8333 |
|---|
| Longitude | -104.333 |
|---|
| Location | Sierra el Virulento |
|---|
| State / province | Chihuahua |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 33.7 |
|
33.4 |
34 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 66.44 | | WT% | XRF |
| TIO2 | 0.73 | | WT% | XRF |
| AL2O3 | 16.52 | | WT% | XRF |
| FE2O3 | 2.25 | | WT% | XRF |
| FEO | 2.05 | | WT% | XRF |
| MNO | 0.11 | | WT% | XRF |
| CAO | 1.66 | | WT% | XRF |
| NA2O | 4.32 | | WT% | XRF |
| MGO | 0.35 | | WT% | XRF |
| K2O | 5.38 | | WT% | XRF |
| P2O5 | 0.2 | | WT% | XRF |
| LOI | 1.2 | | WT% | XRF |
| Y | 43 | | PPM | XRF |
| SR | 245 | | PPM | XRF |
| RB | 122 | | PPM | XRF |
| TH | 9 | | PPM | XRF |
