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Sample LC87-1229
NavDat sample number 19985 · RHYOLITE
Sample
| Sample ID | LC87-1229 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 40.5186 |
|---|
| Longitude | -121.477 |
|---|
| Location | Crustal inclusions in Lassen-phase silicic magmas |
|---|
| State / province | California |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 0.2 |
|
0 |
0.4 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 48.13 | | WT% | XRF |
| AL2O3 | 18.53 | | WT% | XRF |
| FE2O3 | 2.9 | | WT% | XRF |
| FEO | 10.44 | | WT% | XRF |
| MGO | 5.33 | | WT% | XRF |
| CAO | 9.6 | | WT% | XRF |
| NA2O | 3.58 | | WT% | XRF |
| K2O | 0.33 | | WT% | XRF |
| TIO2 | 0.81 | | WT% | XRF |
| P2O5 | 0.05 | | WT% | XRF |
| MNO | 0.3 | | WT% | XRF |
| RB | 3 | | PPM | XRF |
| SR | 212 | | PPM | XRF |
| BA | 100 | | PPM | XRF |
| Y | 16 | | PPM | XRF |
| ZR | 29 | | PPM | XRF |
| NB | 2 | | PPM | XRF |
| PB | 4.2 | | PPM | XRF |
| SR87_SR86 | 0.70601 | | | MS |
| PB206_PB204 | 19.049 | | | MS |
| PB207_PB204 | 15.648 | | | MS |
| PB208_PB204 | 38.766 | | | MS |
| ND143_ND144 | 0.512898 | | | MS |
| TOTAL | 100.49 | | WT% | XRF |
References
- Muffler, L J Patrick (prefacer) (1990) Stratigraphic, lithologic, and major element geochemical constraintson magmatic evolution at Lassen volcanic center, California. Journal of Geophysical Research, vol.95, no.B12, pp.19,651-19,669, 10Nov 1990
