Sample 86/6-39
NavDat sample number 41062 · RHYOLITE
Sample
| Sample ID | 86/6-39 |
|---|---|
| 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 | 69.3 | WT% | XRF | |
| TIO2 | 0.69 | WT% | XRF | |
| AL2O3 | 14.5 | WT% | XRF | |
| FEO | 3.1 | WT% | XRF | |
| MNO | 0.07 | 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 | 165 | PPM | XRF | |
| SR | 30 | PPM | XRF | |
| Y | 61 | PPM | XRF | |
| ZR | 351 | PPM | XRF | |
| NB | 28 | PPM | XRF | |
| CO | 8 | PPM | XRF | |
| LA | 136 | PPM | INAA | |
| CE | 195 | PPM | INAA | |
| ND | 108 | PPM | INAA | |
| SM | 14.6 | PPM | INAA | |
| EU | 3.16 | PPM | INAA | |
| TB | 1.57 | PPM | INAA | |
| DY | 8.8 | PPM | INAA | |
| YB | 4.4 | PPM | INAA | |
| LU | 0.63 | PPM | INAA | |
| SC | 10.2 | PPM | INAA | |
| CS | 4.2 | PPM | INAA | |
| HF | 10.6 | PPM | INAA | |
| BA | 160 | PPM | INAA | |
| TH | 25.1 | PPM | INAA | |
| U | 5.3 | PPM | INAA |
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