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Sample 88AV01
NavDat sample number 48653 · SHONKINITE
Sample
| Sample ID | 88AV01 |
|---|
| Rock name | SHONKINITE |
|---|
| Rock type | VOLCANIC |
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| Composition | MAFIC |
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| Material | IGNEOUS |
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| Comment | phenos of plagioclase, cpx, very fresh biotite, and magnetite |
|---|
Location
| Latitude | 47.2885 |
|---|
| Longitude | -111.94 |
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| Location | outcrop obvious where the dike crosses the St. Peter Mission road |
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| State / province | Montana |
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| Volcanic field | Adel Mountain Volcanics dike |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 73.4 |
|
73 |
73.8 |
|
|
Analyses
No chemical analyses are stored for this sample.
References
- Harlan, Stephen S; Snee, Lawrence W; Reynolds, Mitchell W; Mehnert,Harald H; Schmidt, R G; Sheriff, Steve D; Irving, Anthony J (2005) U. S. Geological Survey Professional Paper, Report: P 1696, 29 pp.,2005
