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Sample USGSD-M1162-1
NavDat sample number 10034 · GRANITE
Sample
| Sample ID | USGSD-M1162-1 |
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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 to fined grained, uniformly textured, two mica granite; biotite is conspicuous but muscovite is visible in thin section mainly as ragged plates; no primary foliation; near contact-metamorphic zone with Proterozoic sedimentary rocks |
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Location
| Latitude | 45.7158 |
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| Longitude | -113.025 |
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| Location | roadcut 300 m N of Bridge 6086 over Wise River; 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 |
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| 72.3 |
|
69.7 |
74.9 |
|
|
Analyses
No chemical analyses are stored for this sample.
