Sample M344
NavDat sample number 12252 · PYROCLASTIC FALL
Sample
| Sample ID | M344 |
|---|---|
| Rock name | PYROCLASTIC FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | tuff - part devit |
Location
| Latitude | 29.1667 |
|---|---|
| Longitude | -104 |
| Location | N end of Sierra Rica |
| State / province | Chihuahua |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 30.2 | 26 | 38 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.41 | WT% | XRF | |
| TIO2 | 0.27 | WT% | XRF | |
| AL2O3 | 13.04 | WT% | XRF | |
| FE2O3 | 0.35 | WT% | XRF | |
| FEO | 1.73 | WT% | XRF | |
| MNO | 0.03 | WT% | XRF | |
| MGO | 0.22 | WT% | XRF | |
| CAO | 0.4 | WT% | XRF | |
| NA2O | 3.03 | WT% | XRF | |
| K2O | 5.46 | WT% | XRF | |
| P2O5 | 0.05 | WT% | XRF | |
| LOI | 1.27 | WT% | XRF | |
| TOTAL | 100.48 | WT% | XRF | |
| NI | 1 | PPM | MS-ID | |
| RB | 256 | PPM | MS-ID | |
| SR | 55 | PPM | MS-ID | |
| Y | 74 | PPM | MS-ID | |
| ZR | 348 | PPM | MS-ID | |
| NB | 63 | PPM | MS-ID | |
| PB | 54 | PPM | MS-ID | |
| TH | 23.6 | PPM | MS-ID |