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Sample BE-531
NavDat sample number 32825 · PYROCLASTIC-FLOW
Sample
| Sample ID | BE-531 |
|---|
| Rock name | PYROCLASTIC-FLOW |
|---|
| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | flow-layered; strong vapor-phase crystallization with tridymite and K-feldspar; phenos of qtz, K-feldspar, plag, and altered mafics |
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Location
| Latitude | 42.4756 |
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| Longitude | -116.833 |
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| Location | just south of road to Brace Brothers ranch on NE flank of Juniper Mountain |
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| State / province | Idaho |
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| Volcanic field | devitrified upper-lobes tuff of Juniper Mountain |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 13.9 |
|
13.4 |
14.4 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 75.87 | | WT% | XRF |
| AL2O3 | 11.66 | | WT% | XRF |
| FE2O3 | 1.29 | | WT% | XRF |
| FEO | 0.19 | | WT% | XRF |
| MGO | 0.1 | | WT% | XRF |
| CAO | 0.88 | | WT% | XRF |
| NA2O | 3.18 | | WT% | XRF |
| K2O | 5.31 | | WT% | XRF |
| H2O_PLUS | 0.34 | | WT% | XRF |
| H2O_MINUS | 0.45 | | WT% | XRF |
| TIO2 | 0.18 | | WT% | XRF |
| P2O5 | 0.26 | | WT% | XRF |
| MNO | 0.026 | | WT% | XRF |
| CO2 | 0.32 | | WT% | XRF |
| TOTAL | 100.06 | | WT% | XRF |
