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Sample KW-911-67
NavDat sample number 4098 · BASALT
Sample
| Sample ID | KW-911-67 |
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| Rock name | BASALT |
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| Rock type | VOLCANIC |
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| Composition | MAFIC |
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| Material | IGNEOUS |
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| Collected by | K.L. Wier |
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| Comment | dark-greenish-grey; contains scattered phenocrysts of pyroxene, olivine, and plagioclase in fine grained matrix of plagioclase, pyroxene, and iron oxide crystals |
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Location
| Latitude | 45.2811 |
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| Longitude | -111.905 |
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| Location | roadcut on Montana Highway 287; Madison County |
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| State / province | Montana |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
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| 34.4 |
|
31.4 |
37.4 |
|
|
Analyses
No chemical analyses are stored for this sample.
