Sample 2515v
NavDat sample number 12906 · SHOSHONITE
Sample
| Sample ID | 2515v |
|---|---|
| Rock name | SHOSHONITE |
| Rock type | VOLCANIC |
| Composition | MAFIC |
| Material | IGNEOUS |
Location
| Latitude | 45.2179 |
|---|---|
| Longitude | -110.23 |
| Location | Independence stock |
| State / province | Montana |
| Volcanic field | HAT low-K high alumina tholeiitic basaltic andesite through shoshonite to high-K dacite main phase |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 84 | 83 | 86 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 55.7 | WT% | DCP | |
| TIO2 | 0.9 | WT% | DCP | |
| AL2O3 | 17 | WT% | DCP | |
| FEOT | 7.31 | WT% | DCP | |
| MNO | 0.14 | WT% | DCP | |
| MGO | 3.65 | WT% | DCP | |
| CAO | 6.24 | WT% | DCP | |
| NA2O | 4.09 | WT% | DCP | |
| K2O | 3.23 | WT% | DCP | |
| P2O5 | 0.48 | WT% | DCP | |
| H2O_PLUS | 0.47 | WT% | DCP | |
| H2O_MINUS | 0.38 | WT% | DCP | |
| CO2 | 0.01 | WT% | DCP | |
| TOTAL | 100 | WT% | DCP | |
| NI | 27 | PPM | DCP | |
| CR | 58 | PPM | DCP | |
| RB | 80 | PPM | DCP | |
| SR | 908 | PPM | DCP | |
| BA | 1380 | PPM | DCP | |
| PB | 15.1 | PPM | DCP | |
| U | 2.37 | PPM | DCP | |
| TH | 8 | PPM | DCP | |
| ZR | 141 | PPM | DCP | |
| LA | 33.5 | PPM | DCP | |
| CE | 62.9 | PPM | DCP | |
| ND | 32.1 | PPM | DCP | |
| SM | 6.14 | PPM | DCP | |
| EU | 1.57 | PPM | DCP | |
| GD | 5.48 | PPM | DCP | |
| DY | 3.41 | PPM | DCP | |
| Y | 20.1 | PPM | DCP | |
| YB | 1.77 | PPM | DCP | |
| RB87_SR86 | 0.285 | MS-ID | ||
| SR87_SR86 | 0.70485 | TIMS | ||
| SM147_ND144 | 0.116 | MS-ID | ||
| ND143_ND144 | 0.51188 | TIMS | ||
| PB206_PB204 | 16.823 | TIMS | ||
| PB207_PB204 | 15.3 | TIMS | ||
| PB208_PB204 | 36.774 | TIMS |
References
- Meen, James K; Eggler, David H (1987) Petrology and geochemistry of the Cretaceous Independence Volcanic Suite, Absaroka Mountains, Montana; clues to the composition of the Archean sub-Montanan mantle; with Suppl. Data 87-10. Geological Society of America Bulletin, vol.98, no.2, pp.238-247, Feb 1987 doi:10.1130/0016-7606(1987)98<238:PAGOTC>2.0.CO;2