Sample 95ID-20
NavDat sample number 38652 · TRACHYANDESITE
Sample
| Sample ID | 95ID-20 |
|---|---|
| Rock name | TRACHYANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | fine grained porphyritic with phenos of plag, cpx, bio, opaques, and opx; cryptocrystalline groundmass |
Location
| Latitude | 44.49 |
|---|---|
| Longitude | -114.313 |
| Location | Garden Creek |
| State / province | Idaho |
| Volcanic field | Tdf, Challis Volcanic Group |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 49 | 48 | 50 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 65.16 | WT% | XRF | |
| TIO2 | 0.76 | WT% | XRF | |
| AL2O3 | 16.14 | WT% | XRF | |
| FEOT | 3.76 | WT% | XRF | |
| MNO | 0.06 | WT% | XRF | |
| MGO | 2.06 | WT% | XRF | |
| CAO | 4.18 | WT% | XRF | |
| NA2O | 3.69 | WT% | XRF | |
| K2O | 3.9 | WT% | XRF | |
| P2O5 | 0.28 | WT% | XRF | |
| LOI | 2.19 | WT% | XRF | |
| TOTAL | 100 | WT% | XRF | |
| NI | 12 | PPM | XRF | |
| CR | 67 | PPM | XRF | |
| SC | 14 | PPM | XRF | |
| V | 123 | PPM | XRF | |
| GA | 21 | PPM | XRF | |
| CU | 12 | PPM | XRF | |
| ZN | 64 | PPM | XRF | |
| BA | 1231 | PPM | ICPMS | |
| RB | 102.5 | PPM | ICPMS | |
| SR | 407 | PPM | ICPMS | |
| U | 2.92 | PPM | ICPMS | |
| PB | 16.25 | PPM | ICPMS | |
| CS | 1.48 | PPM | ICPMS | |
| TH | 12.86 | PPM | ICPMS | |
| ZR | 202 | PPM | XRF | |
| Y | 23.92 | PPM | ICPMS | |
| NB | 16.86 | PPM | XRF | |
| HF | 5.33 | PPM | ICPMS | |
| TA | 1.15 | PPM | ICPMS | |
| LA | 42.84 | PPM | ICPMS | |
| CE | 78.19 | PPM | ICPMS | |
| PR | 8.5 | PPM | ICPMS | |
| ND | 32.79 | PPM | ICPMS | |
| SM | 6.72 | PPM | ICPMS | |
| EU | 1.61 | PPM | ICPMS | |
| GD | 5.04 | PPM | ICPMS | |
| TB | 0.78 | PPM | ICPMS | |
| DY | 4.44 | PPM | ICPMS | |
| HO | 0.85 | PPM | ICPMS | |
| ER | 2.36 | PPM | ICPMS | |
| TM | 0.32 | PPM | ICPMS | |
| YB | 2 | PPM | ICPMS | |
| LU | 0.32 | PPM | ICPMS |