← Search
Sample 3
NavDat sample number 4633 · ANDESITE
Sample
| Sample ID | 3 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | porphyritic with pilotaxitic groundmass |
|---|
Location
| Latitude | 39.1929 |
|---|
| Longitude | -121.864 |
|---|
| Location | from near base of the middle member of the Rampart formation; about 1.5 miles ENE of hamlet of West 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 | 57.48 | | WT% | XRF |
| TIO2 | 0.53 | | WT% | XRF |
| AL2O3 | 18.07 | | WT% | XRF |
| FEO | 3.31 | | WT% | XRF |
| FE2O3 | 2.16 | | WT% | XRF |
| MNO | 0.16 | | WT% | XRF |
| CAO | 6.49 | | WT% | XRF |
| MGO | 4.13 | | WT% | XRF |
| NA2O | 3.32 | | WT% | XRF |
| K2O | 1.94 | | WT% | XRF |
| P2O5 | 0.16 | | WT% | XRF |
| H2O_MINUS | 0.48 | | WT% | XRF |
| H2O_PLUS | 1.82 | | WT% | XRF |
| TOTAL | 100.05 | | WT% | XRF |
