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Sample 1-81
NavDat sample number 4743 · PHONOLITE
Sample
| Sample ID | 1-81 |
|---|
| 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 | 44.3786 |
|---|
| Longitude | -103.808 |
|---|
| 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 | 17.9872 | | WT% | NAA |
| FE2O3 | 4.2535 | | WT% | NAA |
| MGO | 1.9534 | | WT% | NAA |
| CAO | 1.6057 | | WT% | NAA |
| NA2O | 7.4396 | | WT% | NAA |
| TIO2 | 0.5867 | | WT% | NAA |
| MNO | 0.1899 | | WT% | NAA |
| BA | 930.34 | | PPM | NAA |
| CE | 101.521 | | PPM | NAA |
| CO | 5.2581 | | PPM | NAA |
| CR | 9.7432 | | PPM | NAA |
| CS | 2.8913 | | PPM | NAA |
| EU | 5.2369 | | PPM | NAA |
| HF | 6.4565 | | PPM | NAA |
| LA | 147.242 | | PPM | NAA |
| LU | 0.1668 | | PPM | NAA |
| RB | 78.949 | | PPM | NAA |
| SB | 0.3951 | | PPM | NAA |
| SC | 2.5305 | | PPM | NAA |
| SM | 18.448 | | PPM | NAA |
| TA | 1.8426 | | PPM | NAA |
| TH | 29.3063 | | PPM | NAA |
| V | 80.4427 | | PPM | NAA |
| YB | 3.048 | | PPM | NAA |
