Sample 256
NavDat sample number 8617 · PYROCLASTIC FALL
Sample
| Sample ID | 256 |
|---|---|
| Alternate ID | 1437 |
| Rock name | PYROCLASTIC FALL |
| Rock type | VOLCANIC |
| Composition | FELSIC |
| Material | IGNEOUS |
| Comment | Aphyric |
Location
| Latitude | 20.6958 |
|---|---|
| Longitude | -103.449 |
| Location | Arroy south of A. Milpa Alta, just east of railroad tracks |
| State / province | Jalisco |
| Location comment | Tala Tuff |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 0.1 | 0.085 | 0.105 |
Analyses
Mineral
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| TIO2 | 0.12 | WT% | WET | |
| AL2O3 | 11.83 | WT% | WET | |
| FE2O3 | 1.33 | WT% | WET | |
| FEO | 0.53 | WT% | WET | |
| MNO | 0.04 | WT% | WET | |
| MGO | 0.04 | WT% | WET | |
| CAO | 0.18 | WT% | WET | |
| NA2O | 4.01 | WT% | FPHOT | |
| K2O | 4.69 | WT% | FPHOT | |
| H2O_PLUS | 4.37 | WT% | PENFIELD | |
| F | 0.16 | WT% | SIE | |
| CL | 0.16 | WT% | SIE | |
| S | 27.14 | UNKNOWN | ||
| SUMA_100 | 72.86 | WT% | UNKNOWN | |
| SC | 0.71 | PPM | INAA | |
| CO | 0.7 | PPM | INAA | |
| ZN | 148 | PPM | XRF | |
| RB | 265 | PPM | XRF | |
| Y | 123 | PPM | XRF | |
| ZR | 590 | PPM | XRF | |
| NB | 110 | PPM | XRF | |
| SB | 0.9 | PPM | INAA | |
| CS | 6.2 | PPM | INAA | |
| LA | 52 | PPM | INAA | |
| CE | 100 | PPM | INAA | |
| ND | 58 | PPM | INAA | |
| SM | 13.9 | PPM | INAA | |
| EU | 0.11 | PPM | INAA | |
| GD | 14.2 | PPM | INAA | |
| TB | 2.68 | PPM | INAA | |
| TM | 1.46 | PPM | INAA | |
| YB | 10.9 | PPM | INAA | |
| LU | 1.44 | PPM | INAA | |
| HF | 19.7 | PPM | INAA | |
| TA | 7.06 | PPM | INAA | |
| PB | 42 | PPM | XRF | |
| TH | 27.6 | PPM | INAA | |
| U | 10.8 | PPM | INAA |