Sample 13B
NavDat sample number 76272 · ANORTHOSITE
Sample
| Sample ID | 13B |
|---|---|
| Rock name | ANORTHOSITE |
| Rock type | PLUTONIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | anorthosite |
Location
| Latitude | 46.5833 |
|---|---|
| Longitude | -112.359 |
| Location | West of Helena |
| State / province | Montana |
| Pluton | Boulder batholith, Union Granodiorite? |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 77 | 72 | 82 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 59.01 | WT% | XRF | |
| AL2O3 | 19.39 | WT% | XRF | |
| FEO | 4.93 | WT% | XRF | |
| MGO | 1.55 | WT% | XRF | |
| CAO | 5.72 | WT% | XRF | |
| NA2O | 3.88 | WT% | FPHOT | |
| K2O | 4.39 | WT% | XRF | |
| TIO2 | 0.76 | WT% | XRF | |
| P2O5 | 0.38 | WT% | XRF | |
| NB | 10.2 | PPM | XRF | |
| Y | 20.5 | PPM | XRF | |
| ZR | 176.1 | PPM | XRF | |
| SR | 1010.9 | PPM | XRF | |
| RB | 99.8 | PPM | XRF | |
| SM | 4.52 | PPM | TIMS_ID | |
| ND | 24.37 | PPM | TIMS_ID | |
| SM147_ND144 | 0.112 | TIMS_ID | ||
| ND143_ND144 | 0.51207 | TIMS_ID | ||
| SR87_SR86 | 0.7067 | TIMS_ID | ||
| RB87_SR86 | 0.2855 | TIMS_ID | ||
| PB206_PB204 | 18.415 | TIMS | ||
| PB207_PB204 | 15.603 | TIMS | ||
| PB208_PB204 | 38.159 | TIMS |