| Title | Notes on lacustrine manganese-iron concretions |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Terasmae, J |
| Source | Geological Survey of Canada, Paper 70-69, 1971, 13 pages, https://doi.org/10.4095/102399  Open Access |
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| Year | 1971 |
| Publisher | Canada Department of Energy, Mines and Resources |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Province | Ontario |
| NTS | 31F/02 |
| Area | Buckshot Lake; Kawagama Lake; Loughborough Lake; Mosque Lake |
| Lat/Long WENS | -77.0000 -76.5000 45.2500 45.0000 |
| Subjects | industrial minerals; metallic minerals; chemical analyses; iron; lacustrine deposits; manganese |
| Released | 1971 01 01; 2015 09 03 |
| Abstract | Manganese-iron concretions, and other types of Mn-Fe precipitate, have been found in many small lakes in Ontario and Nova Scotia, and also in Lakes Michigan and Ontario. These deposits may contain up to
40 per cent (by weight) of iron and 35 per cent of manganese, in addition to small amounts of other elements (Zn, Ni, Co, Pb and Cu). The estimated abundance of these deposits indicates that they may have a mineral resource potential. The formation
of the lacustrine Mn-Fe precipitates is not clearly understood, but appears to be related to geochemical processes through acid leaching in the watershed areas (caused by surface water rich in humic matter) and transport by groundwater to sites of
precipitation in lakes where higher pH levels and oxidizing conditions prevail. |
| GEOSCAN ID | 102399 |
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