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Canada | |
| F. Rutley: "Elements of Mineralogy", 12th Ed. (1900) |
| Hudgins, A.D. (1967) Geology of the Enon Celestite Manto, Enon, Cape Breton County, Nova Scotia. Nova Scotia Department of Mines, AR_ME_11F15A_48-O-61_01_431896. |
| Bishop, D.G., Wright, J.D. (1974) Geology and Trace Element Studies of Manganese Occurrences in Nova Scotia. Nova Scotia Department of Natural Resources, Economic Geology Series, ME 1974-1. |
| R. A. F. Penrose, Jr., Annual Report of the Geological Survey of Arkansas for 1890 Volume 1, Manganese: Its USes, Ores, and Deposits |
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| Wright, J.D. (1975) Iron Deposits of Nova Scotia. Nova Scotia Department of Natural Resources, Mineral Resources Branch, Economic Geology Series ME 1975-1. |