Sample 272
NavDat sample number 17746 · DACITE
Sample
| Sample ID | 272 |
|---|---|
| Rock name | DACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Maximum and minimum ages given are approximations based on average error of previous K-Ar dating. |
Location
| Latitude | 33.1439 |
|---|---|
| Longitude | -108.192 |
| Location | Alum Mtn Cmplx |
| State / province | New Mexico |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 29.7 | 28.7 | 30.7 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| BA | 1066 | PPM | EDXRF | |
| CR | -5 | PPM | EDXRF | |
| HF | 9.6 | PPM | EDXRF | |
| RB | 213 | PPM | EDXRF | |
| SC | 10.5 | PPM | EDXRF | |
| TA | 1.2 | PPM | EDXRF | |
| TH | 33.6 | PPM | EDXRF | |
| LA | 66.5 | PPM | EDXRF | |
| CE | 127 | PPM | EDXRF | |
| ND | 103 | PPM | EDXRF | |
| SM | 9.5 | PPM | EDXRF | |
| EU | 1.68 | PPM | EDXRF | |
| TB | 1.23 | PPM | EDXRF | |
| YB | 2.75 | PPM | EDXRF | |
| LU | 0.47 | PPM | EDXRF | |
| SIO2 | 62.7 | WT% | EDXRF | |
| TIO2 | 0.76 | WT% | EDXRF | |
| AL2O3 | 14.9 | WT% | EDXRF | |
| FEO | 2 | WT% | EDXRF | |
| FE2O3 | 3.4 | WT% | EDXRF | |
| MNO | 0.08 | WT% | EDXRF | |
| MGO | 2.7 | WT% | EDXRF | |
| CAO | 4.4 | WT% | EDXRF | |
| NA2O | 3.2 | WT% | EDXRF | |
| K2O | 3.5 | WT% | EDXRF | |
| P2O5 | 0.22 | WT% | EDXRF | |
| H2O_PLUS | 1.92 | WT% | EDXRF | |
| TOTAL | 99.99 | WT% | EDXRF |