Sample 10
NavDat sample number 18238 · CARBONATITE
Sample
| Sample ID | 10 |
|---|---|
| Rock name | CARBONATITE |
| Rock type | PLUTONIC |
| Composition | EXOTIC |
| Material | IGNEOUS |
| Comment | calcite and dolomite, with minor phlogopite, ulvospinel-magnetite, and apatite |
Location
| Latitude | 47.8333 |
|---|---|
| Longitude | -109.259 |
| Location | Missouri River Breaks |
| State / province | Montana |
| Volcanic field | carbonatite dike northeast of Big Slide diatreme |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 48 | 46 | 51 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 4.1 | WT% | SP-PH | |
| TIO2 | 0.33 | WT% | SP-PH | |
| AL2O3 | 3.5 | WT% | SP-PH | |
| FE2O3 | 0.72 | WT% | SP-PH | |
| FEO | 1.6 | WT% | SP-PH | |
| MNO | 0.25 | WT% | SP-PH | |
| MGO | 8.2 | WT% | SP-PH | |
| CAO | 38.5 | WT% | SP-PH | |
| NA2O | 1.3 | WT% | SP-PH | |
| K2O | 0.06 | WT% | SP-PH | |
| P2O5 | 1.88 | WT% | SP-PH | |
| H2O_PLUS | 0.04 | WT% | SP-PH | |
| H2O_MINUS | 0.25 | WT% | SP-PH | |
| TOTAL | 101 | WT% | SP-PH | |
| NI | 400 | PPM | NAA | |
| CR | 76.8 | PPM | NAA | |
| CO | 23.3 | PPM | NAA | |
| ZN | 82 | PPM | NAA | |
| SC | 17.6 | PPM | NAA | |
| BA | 1970 | PPM | NAA | |
| RB | 25 | PPM | NAA | |
| SR | 1210 | PPM | NAA | |
| ZR | 261 | PPM | NAA | |
| HF | 5.4 | PPM | NAA | |
| NB | 360 | PPM | NAA | |
| TA | 16.7 | PPM | NAA | |
| TH | 56.2 | PPM | NAA | |
| LA | 330 | PPM | NAA | |
| CE | 508 | PPM | NAA | |
| ND | 191 | PPM | NAA | |
| SM | 23.1 | PPM | NAA | |
| EU | 6.2 | PPM | NAA | |
| GD | 20.2 | PPM | NAA | |
| TB | 1.66 | PPM | NAA | |
| YB | 1.6 | PPM | NAA | |
| LU | 0.21 | PPM | NAA | |
| F | 0.16 | WT% | NAA |