Sample 20b
NavDat sample number 127371 · GABBRO
Sample
| Sample ID | 20b |
|---|---|
| Rock name | GABBRO |
| Rock type | PLUTONIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Collected by | Frost, Thomas |
| Comment | Fine inclusion |
Location
| Latitude | 37.1719 |
|---|---|
| Longitude | -118.564 |
| Location | Lamark Granodiorite |
| State / province | California |
| Volcanic field | Lamarck Granodiorite |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 91.6 | 91 | 92.2 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 50.3 | WT% | XRF | |
| TIO2 | 1.11 | WT% | XRF | |
| AL2O3 | 19.7 | WT% | XRF | |
| FE2O3 | 10 | WT% | XRF | |
| MNO | 0.19 | WT% | XRF | |
| MGO | 4.6 | WT% | XRF | |
| CAO | 7 | WT% | XRF | |
| NA2O | 4.1 | WT% | XRF | |
| K2O | 2.33 | WT% | XRF | |
| P2O5 | 0.35 | WT% | XRF | |
| LOI | 0.6 | WT% | XRF | |
| BA | 240 | PPM | EDXRF | |
| LA | 35 | PPM | EDXRF | |
| CE | 77 | PPM | EDXRF | |
| RB | 190 | PPM | EDXRF | |
| SR | 400 | PPM | EDXRF | |
| Y | 27 | PPM | EDXRF | |
| ZR | 140 | PPM | EDXRF | |
| NB | 16 | PPM | EDXRF | |
| NI | 17 | PPM | EDXRF | |
| ZN | 160 | PPM | EDXRF | |
| CR | 22 | PPM | EDXRF | |
| RB | 190 | PPM | MS-ID | |
| SR | 400 | PPM | MS-ID | |
| SR87_SR86 | 0.70656 | TIMS | ||
| SM | 5.36 | PPM | MS-ID | |
| ND | 25.17 | PPM | MS-ID |