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Sample P - phonolite
NavDat sample number 3466 · PHONOLITE
Sample
| Sample ID | P - phonolite |
|---|
| Rock name | PHONOLITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
|---|
| Comment | dark gray, porphyritic; phenocrysts of Na sanidine, hauyne, and nosean, along with minor aegirine; same minerals for groundmass |
|---|
Location
| Latitude | 42.7112 |
|---|
| Longitude | -107.289 |
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| Location | TSR Knob |
|---|
| State / province | Wyoming |
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| Volcanic field | Rattlesnake Hills igneous complex |
|---|
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|
| 44.7 |
|
43.7 |
45.7 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|
| SIO2 | 56.8 | | WT% | AAS |
| AL2O3 | 21 | | WT% | AAS |
| FE2O3T | 2.9 | | WT% | AAS |
| MGO | 0.3 | | WT% | AAS |
| CAO | 0.5 | | WT% | AAS |
| NA2O | 7.35 | | WT% | AAS |
| K2O | 7.33 | | WT% | AAS |
| TIO2 | 0.2 | | WT% | AAS |
| MNO | 0.08 | | WT% | AAS |
| TOTAL | 97.46 | | WT% | AAS |
