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Sample RH-CH-927
NavDat sample number 12101 · RHYOLITE
Sample
| Sample ID | RH-CH-927 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
|---|
| Comment | massive, locally flow-laminated or autobrecciated, silicified, with tridymite and opal in matrix |
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Location
| Latitude | 44.5 |
|---|
| Longitude | -114.708 |
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| Location | Challis volcanic field; uppermost East Fork Mayfield Creek |
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| State / province | Idaho |
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| Volcanic field | Challis volcanic field, rhyolite complex of East Fork Mayfield Creek |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 46 |
|
45 |
48 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 80.5 | | WT% | XRF |
| AL2O3 | 10.3 | | WT% | XRF |
| FE2O3 | 1.25 | | WT% | XRF |
| FEO | 0.1 | | WT% | XRF |
| MGO | 0 | | WT% | XRF |
| CAO | 0.07 | | WT% | XRF |
| NA2O | 3.3 | | WT% | XRF |
| K2O | 4.17 | | WT% | XRF |
| H2O_PLUS | 0.45 | | WT% | XRF |
| H2O_MINUS | 0.1 | | WT% | XRF |
| TIO2 | 0.1 | | WT% | XRF |
| P2O5 | 0 | | WT% | XRF |
| MNO | 0 | | WT% | XRF |
| CO2 | 0 | | WT% | XRF |
| TOTAL | 100.34 | | WT% | XRF |
