Sample 52
NavDat sample number 18417 · ANDESITE
Sample
| Sample ID | 52 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | phenos of plag, augite, and hypersthene; slightly oxidized hypalopilitic 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 | 1.03 | WT% | AAS | |
| AL2O3 | 15.14 | WT% | AAS | |
| FE2O3 | 2.71 | WT% | AAS | |
| FEO | 3.99 | WT% | TIT | |
| MNO | 0.18 | WT% | AAS | |
| MGO | 3.32 | WT% | AAS | |
| CAO | 6.99 | WT% | AAS | |
| NA2O | 3.11 | WT% | AAS | |
| K2O | 2.89 | WT% | AAS | |
| P2O5 | 0.35 | WT% | AAS | |
| H2O_PLUS | 0.96 | WT% | UNKNOWN | |
| H2O_MINUS | 0.58 | WT% | UNKNOWN | |
| TOTAL | 100.65 | WT% | AAS | |
| RB | 88 | PPM | XRF | |
| SR | 721 | PPM | XRF | |
| BA | 1473 | PPM | AAS | |
| NI | 21 | PPM | AAS | |
| CR | 141 | PPM | AAS | |
| ZR | 229 | PPM | XRF | |
| ZN | 89 | PPM | AAS | |
| CU | 16 | PPM | AAS |