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Sample KW-916-11-67
NavDat sample number 4104 · BASALT
Sample
| Sample ID | KW-916-11-67 |
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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-gray to black; medium grained; plagioclase laths, pyroxene, olivine, and iron oxide; Black Butte plug represents source vent for some basalt flows in adjacent areas |
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Location
| Latitude | 44.9042 |
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| Longitude | -111.854 |
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| Location | upper part of Black Butte volcanic plug; Madison County |
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| State / province | Montana |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 22.9 |
|
21.7 |
24.1 |
|
|
Analyses
No chemical analyses are stored for this sample.
