Sample M72-21
NavDat sample number 29554 · RHYOLITE
Sample
| Sample ID | M72-21 |
|---|---|
| Rock name | RHYOLITE |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Collected by | Supplied by R.A. Bailey |
| Comment | obsidian |
Location
| Latitude | 37.6833 |
|---|---|
| Longitude | -118.883 |
| Location | Early rhyolite sequence |
| State / province | California |
| Volcanic field | Long Valley Caldera |
| Location comment | early rhyolite sequence |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 2.25 | 1.5 | 3 |
Analyses
Glass
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 74.48 | WT% | UNKNOWN | |
| AL2O3 | 13.55 | WT% | UNKNOWN | |
| FE2O3 | 0.35 | WT% | UNKNOWN | |
| FEO | 0.91 | WT% | UNKNOWN | |
| MGO | 0.14 | WT% | UNKNOWN | |
| CAO | 0.84 | WT% | UNKNOWN | |
| NA2O | 3.85 | WT% | UNKNOWN | |
| K2O | 5.14 | WT% | UNKNOWN | |
| H2O_PLUS | 0.38 | WT% | UNKNOWN | |
| TIO2 | 0.15 | WT% | UNKNOWN | |
| P2O5 | 0.03 | WT% | UNKNOWN | |
| MNO | 0.04 | WT% | UNKNOWN | |
| CO | 0.6 | PPM | UNKNOWN | |
| CR | 1.9 | PPM | UNKNOWN | |
| CS | 4.7 | PPM | UNKNOWN | |
| HF | 4.9 | PPM | UNKNOWN | |
| RB | 143 | PPM | UNKNOWN | |
| SB | 1 | PPM | UNKNOWN | |
| SC | 2.1 | PPM | UNKNOWN | |
| TA | 1.37 | PPM | UNKNOWN | |
| TH | 16 | PPM | UNKNOWN | |
| U | 5.5 | PPM | UNKNOWN | |
| LA | 43 | PPM | UNKNOWN | |
| CE | 68 | PPM | UNKNOWN | |
| ND | 24 | PPM | UNKNOWN | |
| SM | 3.6 | PPM | UNKNOWN | |
| EU | 0.4 | PPM | UNKNOWN | |
| GD | 5.4 | PPM | UNKNOWN | |
| TB | 0.41 | PPM | UNKNOWN | |
| TM | 0.21 | PPM | UNKNOWN | |
| YB | 1.8 | PPM | UNKNOWN | |
| LU | 0.28 | PPM | UNKNOWN |