Table 3 Summary of linear combination, least-squares fits to EXAFS spectra
Sample | Component (%)1 |  |  | Total | χ2s2 | ||
|---|---|---|---|---|---|---|---|
| Â | FeAsS | Fe(S,As)2 | Arseniosiderite3 | H3AsO3(aq) | As(V)- Fe3+(hydr)oxide | Â | Â |
Group 1- Ore and Mill Tailings samples | |||||||
Ore samples | Â | Â | Â | Â | Â | Â | Â |
97-LCD1 | 96 | 4 | 7 | 0 | 0 | 107 | 139 |
97-LCD3 | 33 | 69 | 0 | 0 | 2 | 104 | 804 |
Submerged tailings in lake or pond | Â | Â | Â | Â | |||
99-LL12-cs1 | 69 | 4 | 5 | 0 | 0 | 78 | 171 |
99-LL12-cs2 | 78 | 6 | 8 | 0 | 0 | 92 | 146 |
99-LL6-cs | 61 | 5 | 12 | 0 | 0 | 78 | 355 |
00-LL5-cs | 49 | 5 | 17 | 0 | 0 | 71 | 225 |
99-LL2-ss1 | 70 | 5 | 17 | 0 | 6 | 99 | 203 |
Sediment at water line, lake and pond | Â | Â | Â | Â | |||
99-LL4-ss1 | 56 | 4 | 26 | 0 | 0 | 86 | 587 |
00-LL2-ss | 91 | 3 | 4 | 0 | 0 | 98 | 234 |
Subareal, near lake or pond | Â | 0 | Â | Â | |||
99-LL2-ss2 | 15 | 1 | 33 | 0 | 39 | 88 | 78 |
99-LL4-ss2 | 45 | 1 | 27 | 0 | 37 | 110 | 60 |
Group 2-Microbiological samples | Â | Â | Â | Â | Â | ||
99-LL10-m | 0 | 0 | 0 | 34 | 71 | 105 | 114 |
99-LL2-m1 | 0 | 0 | 0 | 24 | 74 | 98 | 86 |
99-LL2-m2 | 0 | 0 | 0 | 19 | 76 | 95 | 76 |
99-LL2-wf | 0 | 0 | 0 | 45 | 3 | 48 | 295 |
00-LCD-m1 | 0 | 0 | 0 | 60 | 60 | 120 | 137 |
00-LCD-m2 | 0 | 0 | 0 | 73 | 45 | 118 | 1408 |
00-LCD-m3 | 0 | 0 | 0 | 14 | 79 | 93 | 156 |