Sample 7
NavDat sample number 18235 · ALNÖITE
Sample
| Sample ID | 7 |
|---|---|
| Rock name | ALNÖITE |
| Rock type | PLUTONIC |
| Composition | ULTRAMAFIC |
| Material | IGNEOUS |
| Comment | irregular to lath-shaped melilite in groundmass, no monticellite, some clinopyroxene |
Location
| Latitude | 47.6369 |
|---|---|
| Longitude | -110.221 |
| Location | Missouri River Breaks |
| State / province | Montana |
| Volcanic field | Haystack Butte |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 48 | 46 | 51 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 34.1 | WT% | SP-PH | |
| TIO2 | 2.6 | WT% | SP-PH | |
| AL2O3 | 11.6 | WT% | SP-PH | |
| FE2O3 | 3.2 | WT% | SP-PH | |
| FEO | 4.2 | WT% | SP-PH | |
| MNO | 0.13 | WT% | SP-PH | |
| MGO | 9.7 | WT% | SP-PH | |
| CAO | 19.6 | WT% | SP-PH | |
| NA2O | 2.1 | WT% | SP-PH | |
| K2O | 3.1 | WT% | SP-PH | |
| P2O5 | 2.6 | WT% | SP-PH | |
| H2O_PLUS | 3.4 | WT% | SP-PH | |
| H2O_MINUS | 0.7 | WT% | SP-PH | |
| TOTAL | 97.7 | WT% | SP-PH | |
| NI | 100 | PPM | NAA | |
| CR | 130 | PPM | NAA | |
| CO | 35 | PPM | NAA | |
| ZN | 133 | PPM | NAA | |
| SC | 21.5 | PPM | NAA | |
| CS | 2.8 | PPM | NAA | |
| BA | 10800 | PPM | NAA | |
| RB | 144 | PPM | NAA | |
| SR | 4300 | PPM | NAA | |
| ZR | 220 | PPM | NAA | |
| HF | 6.4 | PPM | NAA | |
| NB | 238 | PPM | NAA | |
| TA | 8.5 | PPM | NAA | |
| TH | 12.4 | PPM | NAA | |
| LA | 188 | PPM | NAA | |
| CE | 271 | PPM | NAA | |
| ND | 107 | PPM | NAA | |
| SM | 17.9 | PPM | NAA | |
| EU | 4.28 | PPM | NAA | |
| GD | 9.1 | PPM | NAA | |
| TB | 1.18 | PPM | NAA | |
| YB | 0.6 | PPM | NAA | |
| LU | 0.07 | PPM | NAA | |
| CL | 0.02 | WT% | NAA | |
| F | 0.25 | WT% | NAA |