Sample 35
NavDat sample number 18413 · ANDESITE
Sample
| Sample ID | 35 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | phenos of plag and relict augite replaced by calcite, chlorite, micas, epidote, and sphene; cryptofelsic groundmass |
Location
| Latitude | 44.3129 |
|---|---|
| Longitude | -114.837 |
| Location | above 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 | 62.24 | WT% | AAS | |
| TIO2 | 0.64 | WT% | AAS | |
| AL2O3 | 16.4 | WT% | AAS | |
| FE2O3 | 3.96 | WT% | AAS | |
| FEO | 0.67 | WT% | TIT | |
| MNO | 0.07 | WT% | AAS | |
| MGO | 2 | WT% | AAS | |
| CAO | 5.05 | WT% | AAS | |
| NA2O | 3.88 | WT% | AAS | |
| K2O | 3.31 | WT% | AAS | |
| P2O5 | 0.21 | WT% | AAS | |
| H2O_PLUS | 1.33 | WT% | UNKNOWN | |
| H2O_MINUS | 1.13 | WT% | UNKNOWN | |
| TOTAL | 100.9 | WT% | AAS | |
| RB | 82 | PPM | XRF | |
| SR | 524 | PPM | XRF | |
| BA | 1349 | PPM | AAS | |
| NI | 18 | PPM | AAS | |
| CR | 71 | PPM | AAS | |
| ZR | 205.5 | PPM | XRF | |
| ZN | 72 | PPM | AAS | |
| CU | 22 | PPM | AAS |