The michiquillay porphyry copper deposit
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V. F. Hollister; E. B. Sirvas
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Article
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1974
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Springer
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English
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Michiquillay is a mineralized intrusive quartz monzonite porphyry displaying typical porphyry copper alteration zones as found in metallized intrusives of that composition. From the interior outward these are the phyllic, argillic and propylitic zones. The potassic zone is not exposed at the surface