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Sample DWGFA2
NavDat sample number 84664 · BASALT
Sample
| Sample ID | DWGFA2 |
|---|
| Rock name | BASALT |
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| Rock type | PLUTONIC |
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| Composition | MAFIC |
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| Material | IGNEOUS |
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| Comment | Sample is dark gray basalt with rare vesicles to 6 mm and microvesicles lightly coated with a pearly white secondary mineral, probably chalcedony. A later soft secondary mineral, probably calcite, is scattered within microvesicles. Phenocrysts are common for both feldspar to 4 mm, including many recognizable as plagioclase, and for black to pale green olivine. Groundmass olivine ranges from unaltered black to red, altered to iddingsite. |
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Location
| Latitude | 37.3743 |
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| Longitude | -116.547 |
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| State / province | NEVADA |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 13.105 |
|
13.11 |
13.1 |
|
|
Analyses
Whole Rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| AL2O3 | 16.17 | | WT% | XRF |
| BAO | 1289.53 | | PPM | XRF |
| BA | 1155 | | PPM | XRF |
| CAO | 8.168 | | WT% | XRF |
| CR2O3 | 342.564 | | PPM | XRF |
| CR | 234.4 | | PPM | XRF |
| FE2O3 | 8.299 | | WT% | XRF |
| K2O | 2.204 | | WT% | XRF |
| LOI | 1.52 | | WT% | XRF |
| MGO | 3.559 | | WT% | XRF |
| MNO | 0.1683 | | WT% | XRF |
| MN | 0.1303 | | WT% | XRF |
| NA2O | 3.102 | | WT% | XRF |
| NB2O5 | 30.5847 | | PPM | XRF |
| NIO | 90.8651 | | PPM | XRF |
| NI | 71.4 | | PPM | XRF |
| P2O5 | 0.3577 | | WT% | XRF |
| RB2O | 65.8013 | | PPM | XRF |
| SIO2 | 55.52 | | WT% | XRF |
| SRO | 1168.16 | | PPM | XRF |
| TIO2 | 1.26 | | WT% | XRF |
| TOTAL | 100.3 | | WT% | XRF |
| V2O3 | 370.705 | | PPM | XRF |
| Y2O3 | 44.1421 | | PPM | XRF |
| ZNO | 67.0531 | | PPM | XRF |
| ZN | 53.87 | | PPM | XRF |
| ZRO2 | 503.713 | | PPM | XRF |
| ZR | 372.9 | | PPM | XRF |
