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Sample MP-1
NavDat sample number 5582 · RHYOLITE
Sample
| Sample ID | MP-1 |
|---|
| Rock name | RHYOLITE |
|---|
| Rock type | VOLCANIC |
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| Composition | FELSIC |
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| Material | IGNEOUS |
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| Collected by | R.A. Chadwick |
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| Comment | LIGHT-GRAY PORPHYRITIC RHYOLITE WITH DARK-GRAY QUARTZ, IRIDESCENT SANIDINE, AND PLAGIOCLASE PHENOCRYSTS |
|---|
Location
| Latitude | 46.6578 |
|---|
| Longitude | -112.319 |
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| Location | top of hill 1.8 km N of Mullan Pass; Lewis and Clark County |
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| State / province | Montana |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 36.9 |
|
35.4 |
38.4 |
|
|
Analyses
No chemical analyses are stored for this sample.
