Sample 86/8-5
NavDat sample number 41059 · RHYOLITE
Sample
| Sample ID | 86/8-5 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
Location
| Latitude | 30 |
|---|---|
| Longitude | -107.33 |
| Location | San Buenaventura |
| State / province | Chihuahua |
| Country | MEXICO |
| Location comment | W Chihuahua |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 33 | 29.7 | 36.3 |
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 70.3 | WT% | XRF | |
| TIO2 | 0.42 | WT% | XRF | |
| AL2O3 | 14.4 | WT% | XRF | |
| FEO | 3.2 | WT% | XRF | |
| MNO | 0.08 | WT% | XRF | |
| MGO | 0.25 | WT% | XRF | |
| CAO | 0.4 | WT% | XRF | |
| NA2O | 4.8 | WT% | XRF | |
| K2O | 5.9 | WT% | XRF | |
| P2O5 | 0.09 | WT% | XRF | |
| RB | 129 | PPM | XRF | |
| SR | 170 | PPM | XRF | |
| Y | 48 | PPM | XRF | |
| ZR | 362 | PPM | XRF | |
| NB | 27 | PPM | XRF | |
| CO | 12 | PPM | XRF | |
| LA | 56.2 | PPM | INAA | |
| CE | 130 | PPM | INAA | |
| SM | 10.4 | PPM | INAA | |
| EU | 2.52 | PPM | INAA | |
| TB | 1.42 | PPM | INAA | |
| DY | 6.78 | PPM | INAA | |
| YB | 4.26 | PPM | INAA | |
| SC | 8.3 | PPM | INAA | |
| CS | 5.53 | PPM | INAA | |
| HF | 10.1 | PPM | INAA | |
| BA | 1730 | PPM | INAA | |
| TH | 10.9 | PPM | INAA | |
| SR87_SR86 | 0.709928 | MS | ||
| SR87_SR86 | 0.70898 | MS | ||
| ND143_ND144 | 0.512489 | MS | ||
| PB206_PB204 | 18.575 | MS | ||
| PB207_PB204 | 15.567 | MS | ||
| PB208_PB204 | 38.589 | MS |
References
- Albrecht, Achim; Goldstein, Steven L (2000) Effects of basement composition and age on silicic magmas across an accreted terrane-Precambrian crust boundary, Sierra Madre Occidental, Mexico. Journal of South American Earth Sciences, vol.13, no.3, pp.255-273, Jul 2000 doi:10.1016/S0895-9811(00)00014-6