Sample 10
NavDat sample number 4640 · RHYODACITE
Sample
| Sample ID | 10 |
|---|---|
| Rock name | RHYODACITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | phenocrysts of plagioclase, hornblende, and biotite in cryptofelsite groundmass traversed by abundant microliths of oligoclase |
Location
| Latitude | 39.2361 |
|---|---|
| Longitude | -121.792 |
| Location | W of North Butte |
| State / province | California |
| Volcanic field | Sutter Buttes |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 1.75 | 1.5 | 2 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 67.93 | WT% | XRF | |
| TIO2 | 0.21 | WT% | XRF | |
| AL2O3 | 15.01 | WT% | XRF | |
| FEO | 0.2 | WT% | XRF | |
| FE2O3 | 1.29 | WT% | XRF | |
| MNO | 0 | WT% | XRF | |
| CAO | 2.03 | WT% | XRF | |
| MGO | 0.51 | WT% | XRF | |
| NA2O | 3.76 | WT% | XRF | |
| K2O | 3.93 | WT% | XRF | |
| P2O5 | 0.12 | WT% | XRF | |
| H2O_MINUS | 0.71 | WT% | XRF | |
| H2O_PLUS | 4.33 | WT% | XRF | |
| TOTAL | 100.03 | WT% | XRF | |
| NB | 10 | PPM | XRF | |
| ZR | 70 | PPM | XRF | |
| Y | 20 | PPM | XRF | |
| SR | 385 | PPM | XRF | |
| RB | 185 | PPM | XRF | |
| TH | 5 | PPM | XRF | |
| PB | 60 | PPM | XRF | |
| GA | 20 | PPM | XRF | |
| ZN | 30 | PPM | XRF | |
| CU | 5 | PPM | XRF | |
| NI | 10 | PPM | XRF | |
| CR | 5 | PPM | XRF | |
| BA | 1330 | PPM | XRF | |
| CE | 25 | PPM | XRF | |
| ND | 10 | PPM | XRF | |
| PR | 10 | PPM | XRF | |
| LA | 5 | PPM | XRF | |
| CL | 90 | PPM | XRF | |
| S | 50 | PPM | XRF |