Sample McM-25
NavDat sample number 15015 · GABBRO
Sample
| Sample ID | McM-25 |
|---|---|
| Rock name | GABBRO |
| Rock type | PLUTONIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Collected by | Thomas P. Frost |
| Comment | Coarse, porphyritic hb gabbro. Faint horizontal layering visible locally. |
Location
| Latitude | 37.0667 |
|---|---|
| Longitude | -118.351 |
| Location | Eastern Sierra Nevada |
| State / province | California |
| Volcanic field | McMurry Meadows |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 150.9 | 150.8 | 151 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 49.8 | WT% | XRF | |
| TIO2 | 0.7 | WT% | XRF | |
| AL2O3 | 6.99 | WT% | XRF | |
| FE2O3 | 10.1 | WT% | XRF | |
| MNO | 0.18 | WT% | XRF | |
| MGO | 14.1 | WT% | XRF | |
| CAO | 15.4 | WT% | XRF | |
| NA2O | 0.97 | WT% | XRF | |
| K2O | 0.42 | WT% | XRF | |
| P2O5 | 0.12 | WT% | XRF | |
| LOI | 0.79 | WT% | XRF | |
| V | 265 | PPM | XRF | |
| CR | 370 | PPM | EDXRF | |
| NI | 185 | PPM | EDXRF | |
| ZN | 65 | PPM | EDXRF | |
| RB | 11 | PPM | EDXRF | |
| SR | 200 | PPM | EDXRF | |
| Y | 15 | PPM | EDXRF | |
| ZR | 48 | PPM | EDXRF | |
| NB | 3 | PPM | EDXRF | |
| BA | 225 | PPM | EDXRF |