Sample W21
NavDat sample number 54435 · TUFF
Sample
| Sample ID | W21 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Wassuk Range, Mineral county, Nevada [700' N45W of Hill 5842, 3.8 miles NW of Black Mountain] Section approx. 17 m thck of the lower pahse of the Nine Hill Tuff. 1-2 m benath silicified zone of W21, moderately welded glassy base. |
Location
| Latitude | 38.9609 |
|---|---|
| Longitude | -118.954 |
| State / province | Nevada |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 22.78 | 19.21 | 26.34 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.99 | WT% | XRF | |
| TIO2 | 0.25 | WT% | XRF | |
| AL2O3 | 14.4 | WT% | XRF | |
| FEO | 1.95 | WT% | XRF | |
| MNO | 0.09 | WT% | XRF | |
| MGO | 0.57 | WT% | XRF | |
| CAO | 1.88 | WT% | XRF | |
| NA2O | 2.14 | WT% | XRF | |
| K2O | 2.66 | WT% | XRF | |
| P2O5 | -0.07 | WT% | XRF | |
| S | 247 | PPM | XRF | |
| CL | 327 | PPM | XRF | |
| ZN | 85 | PPM | XRF | |
| GA | 22 | PPM | XRF | |
| RB | 118 | PPM | XRF | |
| SR | 274 | PPM | XRF | |
| Y | 32 | PPM | XRF | |
| ZR | 412 | PPM | XRF | |
| NB | 29 | PPM | XRF | |
| CS | 12 | PPM | XRF | |
| BA | 486 | PPM | XRF | |
| PB | 27 | PPM | XRF | |
| TH | 25 | PPM | XRF | |
| LA | 55 | PPM | XRF | |
| CE | 108 | PPM | XRF | |
| PR | 14 | PPM | XRF | |
| ND | 46 | PPM | XRF | |
| SM | 7 | PPM | XRF |