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Sample 1-92D
NavDat sample number 4774 · PHONOLITE
Sample
| Sample ID | 1-92D |
|---|
| 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 | 44.3811 |
|---|
| Longitude | -103.773 |
|---|
| 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 | 14.6622 | | WT% | NAA |
| FE2O3 | 1.1948 | | WT% | NAA |
| MGO | 0.8454 | | WT% | NAA |
| CAO | 2.52 | | WT% | NAA |
| NA2O | 4.049 | | WT% | NAA |
| TIO2 | 0.2927 | | WT% | NAA |
| MNO | 0.0392 | | WT% | NAA |
| BA | 101.124 | | PPM | NAA |
| CE | 15.7438 | | PPM | NAA |
| CO | 1.3886 | | PPM | NAA |
| CR | 3.9537 | | PPM | NAA |
| CS | 5.2104 | | PPM | NAA |
| EU | 0.4002 | | PPM | NAA |
| HF | 3.0642 | | PPM | NAA |
| LA | 4.9966 | | PPM | NAA |
| LU | 0.0758 | | PPM | NAA |
| RB | 163.592 | | PPM | NAA |
| SB | 0.6584 | | PPM | NAA |
| SC | 0.4216 | | PPM | NAA |
| SM | 2.7952 | | PPM | NAA |
| TA | 2.6325 | | PPM | NAA |
| TH | 5.0855 | | PPM | NAA |
| V | 10.2286 | | PPM | NAA |
| YB | 0.3043 | | PPM | NAA |
