Sample A40
NavDat sample number 127437 · RHYOLITE
Sample
| Sample ID | A40 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | PLUTONIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Rhyolite porphyry |
Location
| Latitude | 40.13 |
|---|---|
| Longitude | -105.38 |
| Location | Jamestown mining district |
| State / province | COLORADO |
| Formation | Porphyry Mountain Stock |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 45 | 41.2 | 48.8 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 62.43 | WT% | XRF | |
| TIO2 | 0.15 | WT% | XRF | |
| AL2O3 | 14.5 | WT% | XRF | |
| FE2O3 | 0 | WT% | XRF | |
| MNO | 0.02 | WT% | XRF | |
| MGO | 0.7 | WT% | XRF | |
| CAO | 0.13 | WT% | XRF | |
| NA2O | 4.85 | WT% | XRF | |
| K2O | 5.79 | WT% | XRF | |
| P2O5 | 0.04 | WT% | XRF | |
| V | 0.00412 | PPM | UNKNOWN | |
| MN | 73.93 | PPM | UNKNOWN | |
| CO | 6.29 | PPM | UNKNOWN | |
| NI | 10.55 | PPM | UNKNOWN | |
| CU | 1.16 | PPM | UNKNOWN | |
| ZN | 41.68 | PPM | UNKNOWN | |
| RB | 318.41 | PPM | UNKNOWN | |
| SR | 841.76 | PPM | UNKNOWN | |
| Y | 0.78 | PPM | UNKNOWN | |
| ZR | 208.25 | PPM | UNKNOWN | |
| NB | 26.38 | PPM | UNKNOWN | |
| MO | 9.2 | PPM | UNKNOWN | |
| U | 0 | PPM | UNKNOWN | |
| ARSENIC | 0 | PPM | UNKNOWN | |
| SE | 0.00073 | PPM | UNKNOWN | |
| AG | 0.00236 | PPM | UNKNOWN | |
| CD | 0.00037 | PPM | UNKNOWN | |
| SN | 3.74 | PPM | UNKNOWN | |
| SB | 1.42 | PPM | UNKNOWN | |
| TE | 0 | PPM | UNKNOWN | |
| BA | 0.14 | PPM | UNKNOWN | |
| LA | 0 | PPM | UNKNOWN | |
| CE | 2.82 | PPM | UNKNOWN |