Table 3.
Average total metal concentrations (s.d. in parentheses) in iron oxides collected from the Tar Creek streambed at locations E and H and from <37 μm mine waste samples collected from six mine waste piles throughout the Tar Creek site (Schaider et al. 2007).
| Fe % | Mn (mg kg-1) | Zn (mg kg-1) | Pb (mg kg-1) | Cd (mg kg-1) | Al (mg kg-1) | S (mg kg-1) | |
|---|---|---|---|---|---|---|---|
| Location E (N=3) | 44 (4.6) | 490 (42) | 3,200 (710) | 59 (13) | 45a (23) | 2,600 (170) | 9,600 (1,400) |
| Location H (N=2) | 33 (9.3) | 880 (8.3) | 18,000 (13,000) | 330 (320) | 150a (59) | 5,000 (940) | 14,000 (2,300) |
| <37 μm mine waste (N=24) | 2.0 (0.75) | 210b (71) | 59,000 (28,000) | 5,700 (4,800) | 120 (25) | 9,500 (8,100) | 4,200 (2,400) |
a
Based on total Cd extracted using sequential extractions, N=3 at both locations.
b
Based on total Mn extracted using sequential extractions, N=6.