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Sample BL-44B
NavDat sample number 8428 · PHONOLITE
Sample
| Sample ID | BL-44B |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
|---|
| Comment | holocrystalline; aphanitic and slightly porphyritic; phenocrysts of orthoclase, sodalite, aegirine, melanite; trachytic groundmass of microcrystalline orthoclase and aegirine |
|---|
Location
| Latitude | 44.4573 |
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| Longitude | -104.441 |
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| Location | Bear Lodge Mountains, Houston Creek area |
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| State / province | Wyoming |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 43.9 |
|
36.7 |
51.1 |
|
|
