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  1. 1 de ene. de 2010 · Abstract. Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sediment-hosted Au deposits in increasingly peripheral locations; and superjacent high- and intermediate-sulfidation ...

  2. Porphyry Cu systems host some of the most widely distributed mineralization types at convergent plate boundaries, including porphyry deposits centered on intrusions; skarn, carbonate-replacement, and sedimenthosted Au deposits in increasingly.

  3. s930174202460df25.jimcontent.com › download › versionPorphyry Copper Systems*

    thesis of porphyry Cu genesis and discussion of exploration guidelines. The deposits and prospects used as examples throughout the text are located and further characterized in Figure 1. The economically important results of supergene oxidation and enrichment in porphyry Cu systems have been addressed elsewhere (Sillitoe, 2005, and references ...

  4. pyrite.utah.edu › fieldtrips › SEGFperu-2012Sillitoe 2010

    Phreatic breccias, as exemplified by pebble dikes, normally contain polymictic clast populations set in muddy, rock-flour matrices (Table 1). Vertical clast transport may be apprecia-ble (e.g., >1 km at Tintic; Morris and Lovering, 1979). The breccias are typically late-stage features and, hence, unal-tered and barren.

  5. It is well known that magmatic-hydrothermal breccias (Sillitoe, 1985) in porphyry copper deposits can give rise to substantially higher-grade hypogene (and supergene) mineralization because of the greater permeability and resultant fluid focusing that they provide (Fig. 3).

  6. Porphyry copper systems. Richard H. Sillitoe. Porphyry copper systems (in A group of papers on porphyry Cu deposits, Lawrence D. Meinert) Economic Geology and the Bulletin of the Society of Economic Geologists (January 2010) 105 (1): 3-41. Index Terms/Descriptors. alteration. copper ores. dike swarms. dikes. giant deposits. global. gold ores.

  7. Feb 2018. Richard H Sillitoe. This analysis concludes that there is little realistic likelihood of discovering large, high-grade porphyry Cu deposits in Japan and South Korea because of an...