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John J. Collins
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Journal Article

A metamorphosed deposit of Precambrian supergene copper

John J. Collins, A. Ronald Loureiro
Published: 01 February 1971
Economic Geology (1971) 66 (1): 192–199.
DOI: https://doi.org/10.2113/gsecongeo.66.1.192
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The appraisal of ore reserves at a Japanese copper mine

John J. Collins
Published: 01 September 1950
Economic Geology (1950) 45 (6): 568–573.
DOI: https://doi.org/10.2113/gsecongeo.45.6.568
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A summary of Horikoshi's structure of cupriferous pyrite deposits in schist

John J. Collins
Published: 01 August 1950
Economic Geology (1950) 45 (5): 480–481.
DOI: https://doi.org/10.2113/gsecongeo.45.5.480
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Summary of Kinoshita's kuroko deposits of Japan

John J. Collins
Published: 01 June 1950
Economic Geology (1950) 45 (4): 363–376.
DOI: https://doi.org/10.2113/gsecongeo.45.4.363
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