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Sample BL-10-146
NavDat sample number 5872 · PHONOLITE
Sample
| Sample ID | BL-10-146 |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | PLUTONIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | from drill core at 146 ft depth |
|---|
Location
| Latitude | 44.3833 |
|---|
| Longitude | -103.817 |
|---|
| State / province | South Dakota |
|---|
| Volcanic field | Northern Cutting Stock, Black Hills Tertiary igneous province |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 50 |
|
45 |
55 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 57.8 | | WT% | WET |
| AL2O3 | 17.8 | | WT% | WET |
| CAO | 2.9 | | WT% | WET |
| NA2O | 7.7 | | WT% | WET |
| K2O | 4.7 | | WT% | WET |
| FEO | 1.13 | | WT% | WET |
| FE2O3 | 2.4 | | WT% | WET |
| MGO | 0.75 | | WT% | WET |
| TIO2 | 0.54 | | WT% | WET |
