Sample 87A
NavDat sample number 127366 · GABBRO
Sample
| Sample ID | 87A |
|---|---|
| Rock name | GABBRO |
| Rock type | PLUTONIC |
| Composition | MAFIC |
| Material | IGNEOUS |
| Collected by | Frost, Thomas |
| Comment | Mafic intrusion 30 m from contact. Plag, hb, as penocrysts to 4mm plag, hb, bio groundmass |
Location
| Latitude | 37.2306 |
|---|---|
| Longitude | -118.652 |
| Location | Lamark Granodiorite |
| State / province | California |
| Volcanic field | Piute Creek Diorite |
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 | 52.6 | WT% | XRF | |
| TIO2 | 0.95 | WT% | XRF | |
| AL2O3 | 17.6 | WT% | XRF | |
| FE2O3 | 9.17 | WT% | XRF | |
| MNO | 0.15 | WT% | XRF | |
| MGO | 5.3 | WT% | XRF | |
| CAO | 8.22 | WT% | XRF | |
| NA2O | 3.3 | WT% | XRF | |
| K2O | 1.9 | WT% | XRF | |
| P2O5 | 0.25 | WT% | XRF | |
| LOI | 0.64 | WT% | XRF | |
| BA | 590 | PPM | EDXRF | |
| CE | 55 | PPM | EDXRF | |
| RB | 100 | PPM | EDXRF | |
| SR | 560 | PPM | EDXRF | |
| Y | 18 | PPM | EDXRF | |
| ZR | 155 | PPM | EDXRF | |
| NB | 10 | PPM | EDXRF | |
| NI | 30 | PPM | EDXRF | |
| ZN | 105 | PPM | EDXRF | |
| CR | 110 | PPM | EDXRF | |
| RB | 101.86 | PPM | MS-ID | |
| SR | 582.33 | PPM | MS-ID | |
| SR87_SR86 | 0.70633 | TIMS | ||
| SM | 4.01 | PPM | MS-ID | |
| ND | 20.27 | PPM | MS-ID | |
| ND143_ND144 | 0.512371 | TIMS |