Sample GN2
NavDat sample number 54625 · VITROPHERE
Sample
| Sample ID | GN2 |
|---|---|
| Rock name | VITROPHERE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Gold Note Ridge, El Dorado county, California [SE 1/4, SE 1/4, SW 1/4, SE 1/4, Sec. 10, T8N, R14E] Densely welded basal vitrophyre, float only. Intermediate between upper and lower phase of the Nine Hill Tuff. |
Location
| Latitude | 38.5544 |
|---|---|
| Longitude | -120.41 |
| State / province | California |
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 | 72.76 | WT% | XRF | |
| TIO2 | 0.26 | WT% | XRF | |
| AL2O3 | 13.52 | WT% | XRF | |
| FEO | 2.16 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | -0.39 | WT% | XRF | |
| CAO | 0.56 | WT% | XRF | |
| NA2O | 1.87 | WT% | XRF | |
| K2O | 6.3 | WT% | XRF | |
| P2O5 | -0.07 | WT% | XRF | |
| S | 61 | PPM | XRF | |
| CL | 494 | PPM | XRF | |
| ZN | 103 | PPM | XRF | |
| GA | 24 | PPM | XRF | |
| RB | 205 | PPM | XRF | |
| SR | 41 | PPM | XRF | |
| Y | 58 | PPM | XRF | |
| ZR | 375 | PPM | XRF | |
| NB | 29 | PPM | XRF | |
| CS | -5 | PPM | XRF | |
| BA | 445 | PPM | XRF | |
| PB | 48 | PPM | XRF | |
| TH | 26 | PPM | XRF | |
| LA | 88 | PPM | XRF | |
| CE | 161 | PPM | XRF | |
| PR | 26 | PPM | XRF | |
| ND | 86 | PPM | XRF | |
| SM | 15 | PPM | XRF |