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Sample 1-25
NavDat sample number 4709 · PHONOLITE
Sample
| Sample ID | 1-25 |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | many anorthoclase phenocrysts and fewer albite phenocrysts; groundmass of plagioclase with distinct flow texture and little or no quartz; nepheline occurs in phenocrysts; pyroxene also present |
|---|
Location
| Latitude | 44.3526 |
|---|
| Longitude | -103.866 |
|---|
| State / province | South Dakota |
|---|
| Volcanic field | Black Hill Tertiary igneous province |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 47 |
|
40 |
55 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| AL2O3 | 21.1186 | | WT% | NAA |
| FE2O3 | 0.0048 | | WT% | NAA |
| MGO | 1.5921 | | WT% | NAA |
| CAO | 5.0509 | | WT% | NAA |
| NA2O | 7.9853 | | WT% | NAA |
| TIO2 | 0.3085 | | WT% | NAA |
| MNO | 0.1414 | | WT% | NAA |
| BA | 600.88 | | PPM | NAA |
| CE | 254.987 | | PPM | NAA |
| CO | 1.6801 | | PPM | NAA |
| CR | 6.2926 | | PPM | NAA |
| CS | 7.2343 | | PPM | NAA |
| EU | 3.9317 | | PPM | NAA |
| HF | 9.2631 | | PPM | NAA |
| LA | 211.669 | | PPM | NAA |
| LU | 1.4007 | | PPM | NAA |
| RB | 195.692 | | PPM | NAA |
| SB | 0.3525 | | PPM | NAA |
| SC | 0.1108 | | PPM | NAA |
| SM | 21.3664 | | PPM | NAA |
| TA | 3.4371 | | PPM | NAA |
| TH | 121.018 | | PPM | NAA |
| V | 46.7331 | | PPM | NAA |
| YB | 6.1245 | | PPM | NAA |
