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Sample 671
NavDat sample number 5447 · ANDESITE
Sample
| Sample ID | 671 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | Tertiary porphyritic hornblende andesite with abundant plagioclase phenocrysts from block in extrusive breccia, west of Mason. |
|---|
Location
| Latitude | 38.9594 |
|---|
| Longitude | -119.221 |
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| State / province | Nevada |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 18.7 |
|
16.8 |
20.6 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| FEO | 1.21 | | WT% | WET |
| H2O_PLUS | 0.44 | | WT% | WET |
| CO2 | 0.24 | | WT% | WET |
| SR | 0.133 | | PPM | XRF |
| RB | 0.005 | | PPM | XRF |
| ZR | 0.006 | | PPM | XRF |
| S | 0.06 | | PPM | WET |
| SIO2 | 58.92 | | WT% | WET |
| TIO2 | 0.81 | | WT% | WET |
| AL2O3 | 18.29 | | WT% | WET |
| FE2O3 | 3.68 | | WT% | WET |
| MNO | 0.05 | | WT% | WET |
| MGO | 2.02 | | WT% | WET |
| CAO | 5.62 | | WT% | WET |
| NA2O | 4.87 | | WT% | WET |
| K2O | 2.77 | | WT% | WET |
| H2O_MINUS | 0.22 | | WT% | WET |
| P2O5 | 0.34 | | WT% | WET |
