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Sample USGSD-M32-1-4
NavDat sample number 10037 · GRANITE
Sample
| Sample ID | USGSD-M32-1-4 |
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| Rock name | GRANITE |
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| Rock type | PLUTONIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Comment | medium grained, homogeneous, 2 mica granite; biotite, rare muscovite, plagioclase, smoky quartz, and euhedral k-feldspar phenocrysts scattered throughout; same unit as USGSD-M32-1-4 |
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Location
| Latitude | 45.6447 |
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| Longitude | -112.977 |
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| Location | loose block in felsenmeer at 9460 ft elevation, ENE of the 9578 ft peak; Beaverhead County |
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| State / province | Montana |
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| Volcanic field | Pioneer Batholith |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 64.9 |
|
62.7 |
67.1 |
|
|
Analyses
No chemical analyses are stored for this sample.
