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Sample 1-58
NavDat sample number 4730 · PHONOLITE
Sample
| Sample ID | 1-58 |
|---|
| 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 | 44.284 |
|---|
| Longitude | -103.782 |
|---|
| 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 | 17.4409 | | WT% | NAA |
| FE2O3 | 0.5304 | | WT% | NAA |
| MGO | 1.712 | | WT% | NAA |
| CAO | 0.4752 | | WT% | NAA |
| NA2O | 3.7229 | | WT% | NAA |
| TIO2 | 0.4147 | | WT% | NAA |
| MNO | 0.0381 | | WT% | NAA |
| BA | 544.33 | | PPM | NAA |
| CE | 37.5371 | | PPM | NAA |
| CO | 1.0604 | | PPM | NAA |
| CR | 5.1638 | | PPM | NAA |
| CS | 2.4752 | | PPM | NAA |
| EU | 1.1551 | | PPM | NAA |
| HF | 3.501 | | PPM | NAA |
| LA | 26.6191 | | PPM | NAA |
| LU | 0.089 | | PPM | NAA |
| RB | 97.7473 | | PPM | NAA |
| SB | 0.3762 | | PPM | NAA |
| SC | 0.9106 | | PPM | NAA |
| SM | 4.3822 | | PPM | NAA |
| TA | 1.8693 | | PPM | NAA |
| TH | 13.5124 | | PPM | NAA |
| V | 11.4971 | | PPM | NAA |
| YB | 0.6084 | | PPM | NAA |
