Sample 95ID-31B
NavDat sample number 38675 · ANDESITE
Sample
| Sample ID | 95ID-31B |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of plag, amph, cpx, opx, and opaques |
Location
| Latitude | 44.5733 |
|---|---|
| Longitude | -114.307 |
| Location | Challis Creek; same locality as 95ID-31A and 31C |
| State / province | Idaho |
| Volcanic field | Tl of main effusive phase, Challis Volcanic Group |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 49 | 48 | 50 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 60.64 | WT% | XRF | |
| TIO2 | 0.98 | WT% | XRF | |
| AL2O3 | 15.51 | WT% | XRF | |
| FEOT | 6.11 | WT% | XRF | |
| MNO | 0.14 | WT% | XRF | |
| MGO | 4.07 | WT% | XRF | |
| CAO | 6.11 | WT% | XRF | |
| NA2O | 3.25 | WT% | XRF | |
| K2O | 2.87 | WT% | XRF | |
| P2O5 | 0.33 | WT% | XRF | |
| LOI | 2.05 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 5 | PPM | XRF | |
| CR | 83 | PPM | XRF | |
| SC | 23 | PPM | XRF | |
| V | 157 | PPM | XRF | |
| GA | 21 | PPM | XRF | |
| CU | 3 | PPM | XRF | |
| ZN | 84 | PPM | XRF | |
| BA | 1028 | PPM | ICPMS | |
| RB | 68.3 | PPM | ICPMS | |
| SR | 615 | PPM | ICPMS | |
| U | 2.25 | PPM | ICPMS | |
| PB | 14.51 | PPM | ICPMS | |
| CS | 1.66 | PPM | ICPMS | |
| TH | 8.58 | PPM | ICPMS | |
| ZR | 224 | PPM | XRF | |
| Y | 24.69 | PPM | ICPMS | |
| NB | 21.63 | PPM | XRF | |
| HF | 5.63 | PPM | ICPMS | |
| TA | 1.22 | PPM | ICPMS | |
| LA | 43.54 | PPM | ICPMS | |
| CE | 79.48 | PPM | ICPMS | |
| PR | 8.76 | PPM | ICPMS | |
| ND | 34.21 | PPM | ICPMS | |
| SM | 7.1 | PPM | ICPMS | |
| EU | 1.82 | PPM | ICPMS | |
| GD | 5.34 | PPM | ICPMS | |
| TB | 0.83 | PPM | ICPMS | |
| DY | 4.83 | PPM | ICPMS | |
| HO | 0.94 | PPM | ICPMS | |
| ER | 2.58 | PPM | ICPMS | |
| TM | 0.35 | PPM | ICPMS | |
| YB | 2.18 | PPM | ICPMS | |
| LU | 0.34 | PPM | ICPMS | |
| SR87_SR86 | 0.70848 | TIMS | ||
| ND143_ND144 | 0.51202 | TIMS |