Sample 11
NavDat sample number 18239 · ALNÖITE
Sample
| Sample ID | 11 |
|---|---|
| Rock name | ALNÖITE |
| Rock type | PLUTONIC |
| Composition | ULTRAMAFIC |
| Material | IGNEOUS |
| Comment | irregular to lath-shaped melilite in groundmass, no monticellite, some clinopyroxene |
Location
| Latitude | 47 |
|---|---|
| Longitude | -108.589 |
| Location | Missouri River Breaks |
| State / province | Montana |
| Volcanic field | Winnett sill |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 48 | 46 | 51 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 40.8 | WT% | SP-PH | |
| TIO2 | 0.5 | WT% | SP-PH | |
| AL2O3 | 8.5 | WT% | SP-PH | |
| FE2O3 | 4 | WT% | SP-PH | |
| FEO | 4.7 | WT% | SP-PH | |
| MNO | 0.18 | WT% | SP-PH | |
| MGO | 21.3 | WT% | SP-PH | |
| CAO | 9.3 | WT% | SP-PH | |
| NA2O | 4.1 | WT% | SP-PH | |
| K2O | 2 | WT% | SP-PH | |
| P2O5 | 0.4 | WT% | SP-PH | |
| H2O_PLUS | 3.1 | WT% | SP-PH | |
| H2O_MINUS | 0.64 | WT% | SP-PH | |
| TOTAL | 100.3 | WT% | SP-PH | |
| CR | 1140 | PPM | NAA | |
| CO | 70 | PPM | NAA | |
| ZN | 105 | PPM | NAA | |
| SC | 15.7 | PPM | NAA | |
| CS | 1.5 | PPM | NAA | |
| BA | 1090 | PPM | NAA | |
| RB | 53 | PPM | NAA | |
| SR | 510 | PPM | NAA | |
| HF | 1.5 | PPM | NAA | |
| NB | 32 | PPM | NAA | |
| TA | 1.26 | PPM | NAA | |
| TH | 5.6 | PPM | NAA | |
| LA | 41 | PPM | NAA | |
| CE | 72 | PPM | NAA | |
| ND | 30 | PPM | NAA | |
| SM | 4.4 | PPM | NAA | |
| EU | 1.04 | PPM | NAA | |
| TB | 0.25 | PPM | NAA | |
| YB | 1.1 | PPM | NAA | |
| LU | 0.16 | PPM | NAA | |
| CL | 0.06 | WT% | NAA | |
| F | 0.22 | WT% | NAA |