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Sample L-946
NavDat sample number 3850 · PHONOLITE
Sample
| Sample ID | L-946 |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | VOLCANIC |
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| Composition | INTERMEDIATE |
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| Material | IGNEOUS |
|---|
| Collected by | A. Slaughter |
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| Comment | dike with aegirine-augite, biotite, and orthoclase phenocrysts and aegirine-augite and plagioclase groundmass |
|---|
Location
| Latitude | 44.3539 |
|---|
| Longitude | -103.741 |
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| Location | drill core from 5150 ft level of Homestake Mine |
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| State / province | South Dakota |
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| Volcanic field | Homestake Mine phonolite |
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Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 55.7 |
|
54 |
57.4 |
|
|
Analyses
No chemical analyses are stored for this sample.
