Sample BARS-2
NavDat sample number 19662 · RHYODACITE
Sample
| Sample ID | BARS-2 |
|---|---|
| Alternate ID | 36 |
| Rock name | RHYODACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 34.8768 |
|---|---|
| Longitude | -116.89 |
| Location | Barstow |
| State / province | California |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 20 | 18 | 22 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 69.5 | WT% | XRF | |
| TIO2 | 0.41 | WT% | XRF | |
| AL2O3 | 15.8 | WT% | XRF | |
| FE2O3 | 2.75 | WT% | XRF | |
| MGO | 0.71 | WT% | AAS | |
| CAO | 3.29 | WT% | XRF | |
| NA2O | 4 | WT% | AAS | |
| K2O | 3.36 | WT% | XRF | |
| P2O5 | 0.11 | WT% | XRF | |
| LOI | 0.88 | WT% | XRF | |
| TOTAL | 98.3 | WT% | XRF | |
| BA | 830 | PPM | XRF | |
| CR | 11 | PPM | INAA | |
| CS | 2.8 | PPM | INAA | |
| NB | 4 | PPM | XRF | |
| NI | 0 | PPM | XRF | |
| SB | 0.3 | PPM | INAA | |
| SC | 6.05 | PPM | INAA | |
| TA | 0.8 | PPM | INAA | |
| TH | 6.7 | PPM | INAA | |
| U | 1.5 | PPM | INAA | |
| Y | 26 | PPM | XRF | |
| ZN | 58 | PPM | INAA | |
| ZR | 162 | PPM | XRF | |
| LA | 30 | PPM | INAA | |
| CE | 54 | PPM | INAA | |
| ND | 29 | PPM | INAA | |
| SM | 5.1 | PPM | INAA | |
| EU | 1.09 | PPM | INAA | |
| TB | 0.37 | PPM | INAA | |
| YB | 1.8 | PPM | INAA | |
| LU | 0.3 | PPM | INAA | |
| HF | 4.2 | PPM | INAA | |
| SR | 579 | PPM | XRF | |
| RB | 88 | PPM | XRF | |
| SR87_SR86 | 0.70698 | MS |