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Sample 87-9
NavDat sample number 21561 · ANDESITE
Sample
| Sample ID | 87-9 |
|---|
| Rock name | ANDESITE |
|---|
| Rock type | VOLCANIC |
|---|
| Composition | INTERMEDIATE |
|---|
| Material | IGNEOUS |
Location
| Latitude | 44.1169 |
|---|
| Longitude | -114.26 |
|---|
| Location | near East Fork of Herd Creek |
|---|
| State / province | Idaho |
|---|
| Volcanic field | Challis Volcanics |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
| 45 |
|
40 |
51 |
|
|
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
| SIO2 | 55.75 | | WT% | XRF |
| TIO2 | 0.71 | | WT% | XRF |
| AL2O3 | 13.08 | | WT% | XRF |
| FE2O3T | 7.4 | | WT% | XRF |
| MNO | 0.12 | | WT% | XRF |
| MGO | 6.05 | | WT% | XRF |
| CAO | 6.34 | | WT% | XRF |
| NA2O | 2.44 | | WT% | XRF |
| K2O | 3.41 | | WT% | XRF |
| P2O5 | 0.34 | | WT% | XRF |
| LOI | 4.1 | | WT% | XRF |
| TOTAL | 99.74 | | WT% | XRF |
| RB | 109 | | PPM | XRF |
| SR | 647 | | PPM | XRF |
| BA | 1514 | | PPM | XRF |
| Y | 15 | | PPM | XRF |
| ZR | 184 | | PPM | XRF |
| V | 137 | | PPM | XRF |
| NI | 95 | | PPM | XRF |
| CR | 298 | | PPM | XRF |
| LA | 42.4 | | PPM | MS |
| CE | 81.3 | | PPM | MS |
| PR | 8.22 | | PPM | MS |
| ND | 31.4 | | PPM | MS |
| SM | 5.94 | | PPM | MS |
| EU | 1.47 | | PPM | MS |
| GD | 4.74 | | PPM | MS |
| HO | 0.58 | | PPM | MS |
| ER | 1.51 | | PPM | MS |
| YB | 1.36 | | PPM | MS |
| U | 4.07 | | PPM | MS |
| TH | 14.7 | | PPM | MS |
| PB | 20.3 | | PPM | MS |
| NB | 13.9 | | PPM | MS |
| HF | 4.5 | | PPM | MS |
| CS | 1.7 | | PPM | MS |
| W | 1.6 | | PPM | MS |
| MO | 2 | | PPM | MS |
| PB206_PB204 | 18.362 | | | TIMS |
| PB207_PB204 | 15.591 | | | TIMS |
| PB208_PB204 | 38.869 | | | TIMS |
References
- Norman, Marc D; Mertzman, Stanley A (1991) Petrogenesis of Challis Volcanics from central and southwestern Idaho;trace element and Pb isotopic evidence. Journal of Geophysical Research, B, Solid Earth and Planets, vol.96,no.8, pp.13,279-13,293, 30 Jul 1991 doi:10.1029/91JB00285