| SF-1 | SF-7 | SF-8 | Sf-11 | SF-12 | SF-13 | SF-14 | SF-15 | |
| SiO2 | 47.03 | 50.79 | 48.26 | 48.76 | 47.38 | 46.72 | 49.25 | 49.20 |
| TiO2 | 3.34 | 1.90 | 1.88 | 2.74 | 2.10 | 1.90 | 2.74 | 2.06 |
| Al2O3 | 14.96 | 16.38 | 15.55 | 15.93 | 16.28 | 15.60 | 16.29 | 16.29 |
| Fe2O3 | 5.66 | 5.65 | 6.65 | 9.87 | 7.04 | 3.41 | 4.04 | 7.46 |
| FeO | 7.23 | 5.11 | 5.37 | 2.68 | 4.41 | 7.69 | 7.46 | 3.99 |
| MnO | 0.25 | 0.19 | 0.18 | 0.24 | 0.17 | 0.18 | 0.18 | 0.36 |
| MgO | 6.93 | 6.75 | 7.02 | 4.92 | 7.18 | 9.69 | 5.87 | 5.91 |
| CaO | 9.75 | 8.61 | 9.20 | 9.99 | 9.65 | 10.23 | 9.34 | 10.17 |
| Na2O | 3.85 | 3.64 | 3.49 | 3.74 | 3.62 | 3.03 | 3.86 | 3.58 |
| K2O | 0.85 | 0.72 | 0.62 | 0.59 | 0.61 | 0.55 | 0.84 | 0.59 |
| P2O5 | 0.47 | 0.43 | 0.36 | 0.43 | 0.42 | 0.35 | 0.47 | 0.45 |
| Ba | 153 | 155 | 122 | 148 | 116 | 98 | 183 | 157 |
| Co | 55 | 60 | 53 | 59 | 64 | 73 | 60 | 59 |
| Cr | 114 | 289 | 307 | 97 | 257 | 379 | 141 | 180 |
| Li | 8 | 9 | 707 | 7 | 9 | 6 | 8 | 8 |
| Ni | 44 | 160 | 164 | 59 | 174 | 241 | 83 | 111 |
| Rb | 14 | 14 | 11 | 10 | 9 | 8 | 16 | 705 |
| Sr] | 340 | 291 | 263 | 357 | 349 | 355 | 309 | 231 |
| Mg# | 50 | 54 | 52 | 43 | 54 | 61 | 48 | 49 |
Last Update: 10/1/96
Name: Dennis Geist
Email: dgeist@uidaho.edu