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Sample L-950
NavDat sample number 3857 · SYENITE
Sample
| Sample ID | L-950 |
|---|
| Rock name | SYENITE |
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| Rock type | PLUTONIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
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| Collected by | author |
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| Comment | phenocrysts of plagioclase, hornblende, augite in feldspar, sericite, biotite 2ndary?, and magnetite groundmass |
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Location
| Latitude | 44.4592 |
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| Longitude | -104.438 |
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| Location | 1.3 miles S of observation tower on Bear Lodge Mountain |
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| State / province | Wyoming |
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| Volcanic field | Bear Lodge pluton |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 50.2 |
|
48.6 |
51.8 |
|
|
Analyses
No chemical analyses are stored for this sample.
