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Sample 1-27
NavDat sample number 4710 · PHONOLITE
Sample
| Sample ID | 1-27 |
|---|
| 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 | 44.3514 |
|---|
| Longitude | -103.865 |
|---|
| 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 | 15.9724 | | WT% | NAA |
| FE2O3 | 3.1449 | | WT% | NAA |
| MGO | 1.2256 | | WT% | NAA |
| CAO | 3.4548 | | WT% | NAA |
| NA2O | 7.6641 | | WT% | NAA |
| TIO2 | 0.2459 | | WT% | NAA |
| MNO | 0.1679 | | WT% | NAA |
| BA | 199.773 | | PPM | NAA |
| CE | 405.105 | | PPM | NAA |
| CO | 1.918 | | PPM | NAA |
| CR | 5.9228 | | PPM | NAA |
| CS | 13.3773 | | PPM | NAA |
| EU | 0.1033 | | PPM | NAA |
| HF | 8.5097 | | PPM | NAA |
| LA | 233.847 | | PPM | NAA |
| LU | 0.9465 | | PPM | NAA |
| RB | 186.732 | | PPM | NAA |
| SB | 0.5152 | | PPM | NAA |
| SC | 0.0301 | | PPM | NAA |
| SM | 16.7556 | | PPM | NAA |
| TA | 3.6189 | | PPM | NAA |
| TH | 88.6074 | | PPM | NAA |
| V | 34.318 | | PPM | NAA |
| YB | 4.6439 | | PPM | NAA |
