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Sample LC85-788
NavDat sample number 19983 · RHYOLITE
Sample
| Sample ID | LC85-788 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | FELSIC |
|---|
| Material | IGNEOUS |
|---|
Location
| Latitude | 40.515 |
|---|
| Longitude | -121.456 |
|---|
| 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 | 46.26 | | WT% | XRF |
| AL2O3 | 17.75 | | WT% | XRF |
| FE2O3 | 2.67 | | WT% | XRF |
| FEO | 9.62 | | WT% | XRF |
| MGO | 4.93 | | WT% | XRF |
| CAO | 16.35 | | WT% | XRF |
| NA2O | 1.25 | | WT% | XRF |
| K2O | 0.2 | | WT% | XRF |
| TIO2 | 0.72 | | WT% | XRF |
| P2O5 | 0.11 | | WT% | XRF |
| MNO | 0.15 | | WT% | XRF |
| RB | 1 | | PPM | XRF |
| SR | 235 | | PPM | XRF |
| BA | 49 | | PPM | XRF |
| Y | 16 | | PPM | XRF |
| ZR | 28 | | PPM | XRF |
| NB | 2 | | PPM | XRF |
| PB | 2.5 | | PPM | XRF |
| SR87_SR86 | 0.70566 | | | MS |
| PB206_PB204 | 18.998 | | | MS |
| PB207_PB204 | 15.642 | | | MS |
| PB208_PB204 | 38.705 | | | MS |
| ND143_ND144 | 0.512694 | | | MS |
| TOTAL | 101.43 | | 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
