Sample B-81
NavDat sample number 3799 · VITROPHERE
Sample
| Sample ID | B-81 |
|---|---|
| Rock name | VITROPHERE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Densely-welded vitrophyre, spectacularly columnar, with black glass matrix and abundant fiamme. Grades down to B-80; overlain by densely-welded stony devitrified zone |
Location
| Latitude | 37.513 |
|---|---|
| Longitude | -118.612 |
| State / province | California |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.76 | 0.759 | 0.761 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 75.77 | WT% | WET | |
| NA2O | 3.8 | WT% | WET | |
| K2O | 4.67 | WT% | WET | |
| H2O | 1.01 | WT% | WET | |
| TOTAL | 98.8 | WT% | WET | |
| AL2O3 | 12.07 | WT% | INAA | |
| FEO | 0.71 | WT% | INAA | |
| MNO | 0.04 | WT% | INAA | |
| TIO2 | 0.08 | WT% | XRF | |
| MGO | 0.01 | WT% | XRF | |
| CAO | 0.54 | WT% | XRF | |
| H2O_MINUS | 0.1 | WT% | WET | |
| LA | 28.4 | PPM | INAA | |
| CE | 59.5 | PPM | INAA | |
| ND | 23.2 | PPM | INAA | |
| SM | 3.83 | PPM | INAA | |
| EU | 0.053 | PPM | INAA | |
| TB | 0.53 | PPM | INAA | |
| DY | 3.69 | PPM | INAA | |
| YB | 2.47 | PPM | INAA | |
| LU | 0.35 | PPM | INAA | |
| RB | 181 | PPM | INAA | |
| CS | 6.5 | PPM | INAA | |
| BA | 14 | PPM | INAA | |
| TH | 19.94 | PPM | INAA | |
| U | 6.15 | PPM | INAA | |
| SC | 2.79 | PPM | INAA | |
| HF | 3.66 | PPM | INAA | |
| TA | 1.89 | PPM | INAA | |
| CR | 2.7 | PPM | INAA | |
| CO | 0.23 | PPM | INAA | |
| ZN | 40 | PPM | INAA | |
| MN | 263 | PPM | INAA | |
| W | 2.4 | PPM | INAA | |
| SB | 1.1 | PPM | INAA |