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Geco Mine, Manitouwadge, Thunder Bay District, Ontario, Canada
This volcano-sedimentary deposit has been affected by an amphibolite facies metamorphism (T=650 °C, P=6 kb) resulting in the formation of rocks such as gedrite-cordierite gneisses (cf. Petersen, 1984).
Mineral List
47 entries listed. 35 valid minerals.
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References
Canadian Mineralogist (1982): 20: 549-553.
Petersen, E.U. (1984), Economic Geology: 81(2): 323-342.
Stevenson, R.K. and Martin, R.F. (1986) Implications of the presence of amazonite in the Broken Hill and Geco metamorphosed sulfide deposits. Canadian Mineralogist: 24: 729-745.
Contributions to Mineralogy and Petrology (1989): 101(3)(March): 350-360.
Franklin, J M, Schnieders, B R, Koopman, E R (1991) Mineral Deposits in the western Superior Province, Ontario (Field Trip 9) Geological Survey of Canada, Open File 2164
Petersen, E.U. (1984), Economic Geology: 81(2): 323-342.
Stevenson, R.K. and Martin, R.F. (1986) Implications of the presence of amazonite in the Broken Hill and Geco metamorphosed sulfide deposits. Canadian Mineralogist: 24: 729-745.
Contributions to Mineralogy and Petrology (1989): 101(3)(March): 350-360.
Franklin, J M, Schnieders, B R, Koopman, E R (1991) Mineral Deposits in the western Superior Province, Ontario (Field Trip 9) Geological Survey of Canada, Open File 2164
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