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Sample UE7F-2570
NavDat sample number 84416 · PYROCLASTIC-FALL
Sample
| Sample ID | UE7F-2570 |
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| Rock name | PYROCLASTIC-FALL |
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| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | Sample is grayish orange pink zeolitic and minor calcareous massive nonwelded tuff with common white pumice, mostly 1 to 3 mm, and common mostly bronze biotite, and including one large black grain that is probably hornblende. Ovoid liesegang rings, with long axes to 8 mm and short axes to 5 mm, have white interiors and moderate red outer bands. Rare lithics include a single grayish black, 0.8-mm diameter fragment observed. |
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Location
| Latitude | 37.0887 |
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| Longitude | -116.049 |
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| State / province | NEVADA |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 15.35 |
|
15.4 |
15.3 |
|
|
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| UO2 | 5.1604 | | PPM | NAA |
| BAO | 838.923 | | PPM | XRF |
| BA | 751.4 | | PPM | XRF |
| CE2O3 | 152.265 | | PPM | XRF |
| FE2O3 | 1.62 | | WT% | XRF |
| LA2O3 | 85.2714 | | PPM | XRF |
| NB2O5 | 57.2927 | | PPM | XRF |
| ND2O3 | 47.6104 | | PPM | XRF |
| RB2O | 172.24 | | PPM | XRF |
| SRO | 559.365 | | PPM | XRF |
| Y2O3 | 48.3836 | | PPM | XRF |
| ZNO | 38.7357 | | PPM | XRF |
| ZN | 31.12 | | PPM | XRF |
| ZRO2 | 383.222 | | PPM | XRF |
| ZR | 283.7 | | PPM | XRF |
