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- W1998078231 abstract "The Madeleine copper deposit comprises steeply plunging stockwork orebodies in cordierite-biotite hornfels adjacent to a Devonian granitic pluton. Mineralization in each orebody is zoned outward from bornite-chalcopyrite in the core through chalcopyrite to chalcopyrite-pyrrhotite and is associated with local biotite, calc-silicate, and chlorite-muscovite alteration. Sulfide deformation textures suggest that mineralization was pre- to synmetamorphic. The delta 34 S values of chalcopyrite range from -26.7 to +32.5 per mil. Higher delta 34 S values correlate with calc-silicate beds or with calc-silicate alteration. Shales corresponding to the cordierite-biotite hornfels have delta 34 S values ranging from +7.1 to -19.1 per mil and limestones delta 34 S > 14 per mil. It is proposed that cupriferous fluids, partly emanating from a granite, dissolved sulfur from the overlying sediments and rose through bedding plane-controlled permeability to deposit the ores at higher structural but similar stratigraphic levels." @default.
- W1998078231 created "2016-06-24" @default.
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- W1998078231 date "1989-10-01" @default.
- W1998078231 modified "2023-09-25" @default.
- W1998078231 title "A sulfur isotope study of the granite-related, Madeleine copper deposit, Gaspe, Quebec; an example of a sedimentary sulfur source" @default.
- W1998078231 doi "https://doi.org/10.2113/gsecongeo.84.6.1507" @default.
- W1998078231 hasPublicationYear "1989" @default.
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