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http://dx.doi.org/10.9719/EEG.2011.44.2.109

Major Molybdenum Mineralization and Igneous Activity, South Korea  

Choi, Seon-Gyu (Dept. of Earth & Environmental Sciences, Korea University)
Koo, Min-Ho (Dept. of Earth & Environmental Sciences, Korea University)
Kang, Heung-Suk (Korea Resources Corporation)
Ahn, Yong-Hwan (Dept. of Earth & Environmental Sciences, Korea University)
Publication Information
Economic and Environmental Geology / v.44, no.2, 2011 , pp. 109-122 More about this Journal
Abstract
The major Mo deposits in South Korea were formed during the Jurassic Daebo orogeny, the Late Cretaceous and the Tertiary post-orogenic igneous activities, and are characterized by a variety of genetic types such as pegmatite, greisen, skarn, porphyry and vein types. The Jangsu mine is a pegmatite-style deposit which is genetically related to the Jurassic ilmenite-series two-mica granite with the Mo mineralization age of $159.6{\pm}4.5$ Ma. The Geumseong mine occurs as a skarn/porphyry-style deposit associated with highly fractionated granite. Its age of Mo mineralization within aplitic cupola is about 96.5~l07.5 Ma. The Yeonil mine is a porphyry-style deposit, and the Geumeum mine is a veinlet-style deposit along the fracture zone with their mineralization ages of $58.4{\pm}1.6$ and $54.4{\pm}1.2$ Ma, respectively. The contrasts in the style of Mo mineralization in Korea reflect the different environment of the related magmatism. The Jurassic mineralization, being related to deep-seated granitoids, occurs as a pegmatite-style deposit, whereas the Cretaceous one, being related to subvolcanic granitoids, occurs as skarn/porphyry/vein-type ore deposits. The Tertiary Mo mineralization has a close relationship with the igneous activities associated with the Tertiary basin formation along the east coast, Korean peninsular.
Keywords
molybdenum; mineralization age; igneous activity; porphyry-style deposit; skarn;
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Times Cited By KSCI : 5  (Citation Analysis)
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