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Sample WC69-1
NavDat sample number 48656 · MONZONITE
Sample
| Sample ID | WC69-1 |
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| Rock name | MONZONITE |
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| Rock type | PLUTONIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | phenos of sanidine in groundmass of sanidine, oligoclase, quartz, biotite, hornblende, magnetite, and apatite |
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Location
| Latitude | 47.1593 |
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| Longitude | -112.316 |
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| Location | 3 to 6 m thick sill exposed in south wall of valley of Green Creek, approximately 15 m E of Montana State Hwy 200 |
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| State / province | Montana |
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| Volcanic field | sill apparently cut by Steinbach thrust |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 59.6 |
|
58 |
61.2 |
|
|
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
