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Sample 17460
NavDat sample number 125511 · LAMPROITE
Sample
| Sample ID | 17460 |
|---|
| Rock name | LAMPROITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | EXOTIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 41.822 |
|---|
| Longitude | -108.996 |
|---|
| Location | Leucite Hill |
|---|
| State / province | Montana |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 2.25 |
|
1.4 |
3.1 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| RB | 210 | | PPM | XRF |
| SR | 5938 | | PPM | ICPAES |
| PB | 40.86 | | PPM | XRF |
| SM | 35.1 | | PPM | ICPAES |
| ND | 286 | | PPM | ICPAES |
| SR87_SR86 | 0.705528 | | | MS |
| ND143_ND144 | 0.512073 | | | MS |
| U | 8.7 | | PPM | INAA |
| TH | 31.6 | | PPM | INAA |
| CS | 2.35 | | PPM | INAA |
| TA | 3.08 | | PPM | INAA |
| HF | 34.3 | | PPM | INAA |
| PB206_PB204 | 17.29 | | | MS |
| PB207_PB204 | 15.457 | | | MS |
| PB208_PB204 | 37.306 | | | MS |
References
- O'Brien, Hugh E; Irving, Anthony J; McCallum, I S; Thirlwall, MatthewF (1995) Strontium, neodymium, and lead isotope evidence for the interaction ofpost-subduction asthenospheric potassic mafic magmas of the HighwoodMountains, Montana, USA, with ancient Wyoming craton lithosphericmantle. Geochimica et Cosmochimica Acta, vol.59, no.21, pp.4539-4556, Nov1995 doi:10.1016/0016-7037(95)99266-J
