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JOURNAL OF MINERALOGY, PETROLOGY AND ECONOMIC GEOLOGY
Vol. 90 (1995) No. 8 August P 261-267

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http://doi.org/10.2465/ganko.90.261

ORIGINAL ARTICLES

Hydrothermal coprecipitation experiments were performed at 350 and 300°C, in order to reproduce the “chalcopyrite disease” texture involving Fe-bearing sphalerite. Sector-zoned chalcopyrite disease textures were obtained in some runs using a hydrothermal transporting method, and this shows that coprecipitation is responsible for formation of the texture in Fe-bearing sphalerite. These chalcopyrite disease textures with compositions similar to the run products occur in Fe-bearing sphalerite ores from the modern seafloor deposits at the Okinawa Trough and North Fiji Basin, suggesting a possibility that the chalcopyrite disease textures in the deposits were caused by the process of coprecipitation in short spans of time.

Copyright © 1995 Japan Association of Mineralogical Sciences

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