TY - JOUR
T1 - Geochemical characteristics of intrusive rocks, Southeastern Mindanao, Philippines
T2 - Implication to metallogenesis of porphyry copper-gold deposits
AU - Suerte, Leilanie Osano
AU - Imai, Akira
AU - Nishihara, Sho
PY - 2009/9/1
Y1 - 2009/9/1
N2 - 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.
AB - 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.
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U2 - 10.1111/j.1751-3928.2009.00094.x
DO - 10.1111/j.1751-3928.2009.00094.x
M3 - Article
AN - SCOPUS:69449093954
SN - 1344-1698
VL - 59
SP - 244
EP - 262
JO - Resource Geology
JF - Resource Geology
IS - 3
ER -