Sample 51
NavDat sample number 18416 · ANDESITE
Sample
| Sample ID | 51 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | phenos of plag, augite, and hypersthene; hyalopilitic groundmass |
Location
| Latitude | 44.3453 |
|---|---|
| Longitude | -114.783 |
| Location | above headwaters of East Basin Creek |
| State / province | Idaho |
| Volcanic field | Challis Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 46 | 43 | 49 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 59.4 | WT% | AAS | |
| TIO2 | 0.96 | WT% | AAS | |
| AL2O3 | 14.63 | WT% | AAS | |
| FE2O3 | 2.08 | WT% | AAS | |
| FEO | 4.52 | WT% | TIT | |
| MNO | 0.18 | WT% | AAS | |
| MGO | 3.61 | WT% | AAS | |
| CAO | 7.17 | WT% | AAS | |
| NA2O | 3.25 | WT% | AAS | |
| K2O | 2.31 | WT% | AAS | |
| P2O5 | 0.37 | WT% | AAS | |
| H2O_PLUS | 0.41 | WT% | UNKNOWN | |
| H2O_MINUS | 1.11 | WT% | UNKNOWN | |
| TOTAL | 100 | WT% | AAS | |
| RB | 81 | PPM | XRF | |
| SR | 726 | PPM | XRF | |
| BA | 1531 | PPM | AAS | |
| NI | 14 | PPM | AAS | |
| CR | 192 | PPM | AAS | |
| ZR | 221 | PPM | XRF | |
| ZN | 85 | PPM | AAS | |
| CU | 15 | PPM | AAS |