Sample 85L-29I
NavDat sample number 45873 · PYROCLASTIC-FALL
Sample
| Sample ID | 85L-29I |
|---|---|
| Rock name | PYROCLASTIC-FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 37.915 |
|---|---|
| Longitude | -106.919 |
| Location | Nelson Mtn SE Ridge |
| State / province | COLORADO |
| Formation | Rat Creek Caldera Cycle, Rat Creek Tuff, lower |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 26.6 | 26.1 | 27 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 70.02 | WT% | XRF | |
| TIO2 | 0.346431 | WT% | XRF | |
| AL2O3 | 15.9673 | WT% | XRF | |
| FE2O3 | 2.23605 | WT% | XRF | |
| MGO | 1.21776 | WT% | XRF | |
| CAO | 1.93161 | WT% | XRF | |
| NA2O | 2.93941 | WT% | XRF | |
| K2O | 5.11248 | WT% | XRF | |
| P2O5 | 0.0839832 | WT% | XRF | |
| MNO | 0.0839832 | WT% | XRF | |
| LOI | 4.74 | WT% | XRF | |
| TOTAL | 99.94 | WT% | XRF | |
| ZN | 54 | PPM | XRF | |
| RB | 160 | PPM | XRF | |
| SR | 306 | PPM | XRF | |
| Y | 27 | PPM | XRF | |
| ZR | 210 | PPM | XRF | |
| NB | 19 | PPM | XRF | |
| PB | 22 | PPM | XRF | |
| RB | 141 | PPM | INAA | |
| BA | 1410 | PPM | INAA | |
| SR | 293 | PPM | INAA | |
| TH | 11 | PPM | INAA | |
| U | 3.47 | PPM | INAA | |
| LA | 56.3 | PPM | INAA | |
| CE | 110 | PPM | INAA | |
| ND | 45.2 | PPM | INAA | |
| SM | 7.85 | PPM | INAA | |
| EU | 1.76 | PPM | INAA | |
| GD | 5.9 | PPM | INAA | |
| TB | 0.831 | PPM | INAA | |
| TM | 0.422 | PPM | INAA | |
| YB | 2.75 | PPM | INAA | |
| LU | 0.413 | PPM | INAA | |
| TA | 1.22 | PPM | INAA | |
| ZR | 206 | PPM | INAA | |
| HF | 6.1 | PPM | INAA | |
| SB | 0.394 | PPM | INAA | |
| SC | 7.38 | PPM | INAA | |
| CR | 4.72 | PPM | INAA | |
| CO | 2.69 | PPM | INAA | |
| NI | 7.17 | PPM | INAA | |
| ZN | 57.3 | PPM | INAA |