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Sample L-1119
NavDat sample number 3880 · SYENITE
Sample
| Sample ID | L-1119 |
|---|
| Rock name | SYENITE |
|---|
| 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 orthoclase; groundmass of plagioclase, augite altered to hornblende around edges, primary hornblende?, orthoclase |
|---|
Location
| Latitude | 48.4 |
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| Longitude | -115.591 |
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| Location | about 6 miles N of Libby; Lincoln County |
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| State / province | Montana |
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| Volcanic field | Libby stock |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 247 |
|
240 |
254 |
|
|
Analyses
No chemical analyses are stored for this sample.
