Sample 78W209
NavDat sample number 7751 · TUFF
Sample
| Sample ID | 78W209 |
|---|---|
| Rock name | TUFF |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Collected by | R.H. Tedford and T. Galusha |
| Comment | pale-gray vitric tuff |
Location
| Latitude | 32.6789 |
|---|---|
| Longitude | -109.488 |
| Location | Graham County |
| State / province | Arizona |
| Location comment | 2.1 m stratigraphically above 78W208, W side of Dry Mountain, 4.5 km SSW of 111 Ranch |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 2.67 | 1.71 | 3.63 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 69.3 | WT% | COL OR AAS | |
| AL2O3 | 13 | WT% | COL OR AAS | |
| FE2O3 | 1.5 | WT% | COL OR AAS | |
| MGO | 0.25 | WT% | COL OR AAS | |
| CAO | 1.1 | WT% | COL OR AAS | |
| NA2O | 4.2 | WT% | COL OR AAS | |
| K2O | 3.4 | WT% | COL OR AAS | |
| TIO2 | 0.27 | WT% | COL OR AAS | |
| MN | 0.02 | PPM | COL OR AAS | |
| RB | 0.02 | PPM | COL OR AAS | |
| ZN | 0.007 | PPM | COL OR AAS |