← Search
Sample LR87-707-6
NavDat sample number 46149 · ANDESITE
Sample
| Sample ID | LR87-707-6 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 37.733 |
|---|
| Longitude | -107.02 |
|---|
| Location | along Rio Grande, Hogback Mtn, southeast of Bristol Head |
|---|
| State / province | COLORADO |
|---|
| Formation | Conejos Formation and related early rocks |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 31.25 |
|
29.5 |
33 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 55.79 | | WT% | XRF |
| TIO2 | 1.00354 | | WT% | XRF |
| AL2O3 | 17.2409 | | WT% | XRF |
| FE2O3 | 8.99174 | | WT% | XRF |
| MGO | 3.25148 | | WT% | XRF |
| CAO | 6.55313 | | WT% | XRF |
| NA2O | 3.65289 | | WT% | XRF |
| K2O | 2.08737 | | WT% | XRF |
| P2O5 | 0.411452 | | WT% | XRF |
| MNO | 0.170602 | | WT% | XRF |
| LOI | 0.35 | | WT% | XRF |
| TOTAL | 99.1531 | | WT% | XRF |
| ZN | 111 | | PPM | XRF |
| RB | 36 | | PPM | XRF |
| SR | 660 | | PPM | XRF |
| Y | 21 | | PPM | XRF |
| ZR | 199 | | PPM | XRF |
| NB | 14 | | PPM | XRF |
| PB | 33 | | PPM | XRF |
| TH | 9 | | PPM | XRF |
| BA | 877 | | PPM | XRF |
| LA | 38 | | PPM | XRF |
| CE | 73 | | PPM | XRF |
| ND | 39 | | PPM | XRF |
