Title: Geochemical Characteristics of Intrusive Rocks, Southeastern Mindanao, Philippines: Implication to Metallogenesis of Porphyry Copper‐gold Deposits
Abstract: Abstract This paper describes petrologic and geochemical characteristics of intrusive rocks associated with porphyry copper deposits in south‐eastern Mindanao, the Philippines, where the Kingking deposit is located. Intrusive rocks at the Kingking deposit, are classified into biotite‐bearing diorite porphyry, hornblende diorite porphyry and diorite porphyry. Intrusive rocks in other areas in south‐eastern Mindanao, including Batoto, Bukal, Maragusan, Masara, Amacan and Sumlog, are hornblende diorite porphyry and hornblende quartz diorite. They are adakitic in Sr/Y‐Y diagram, but not in La/Yb‐Yb diagram due to relatively low REE contents. The magmas are oxidizing as suggested by the high X Mg of mafic silicate phenocrysts and SO 3 contents of microphenocrystic apatite. An Oligocene‐Miocene diorite intrusive complex formed by calc‐alkaline, hydrous, oxidizing magma is considered to be associated with porphyry‐type copper‐gold mineralization.
Publication Year: 2009
Publication Date: 2009-08-24
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 13
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