The Second Yeon Hwa Mine which belongs to a so called Lead-Zines Belt Area in the central east Korea is located at about 10 km northeast of the Seogpo railway station on Yeongdong Line. The exploitation of the mine started in June, 1969 and furnished ...
The Second Yeon Hwa Mine which belongs to a so called Lead-Zines Belt Area in the central east Korea is located at about 10 km northeast of the Seogpo railway station on Yeongdong Line. The exploitation of the mine started in June, 1969 and furnished the machinary ore dressing plant in November, 1971. The current monthly production of rude ore is 15,000 meteric tons.
The results of the study on the lead-zinc-copper deposits of the Second Yeonhwa mine are summerized as follows:
(1) main ore deposits of the mine are localized in the Pungchon Limestion formation of Cambrian age,
(2) related ingneous rock with ore deposits is granite porphyry, which distributed in NS and N50˚ W trend,
(3) ore solution ascended along the N50˚ W trend which represents folding axis and fault plane and mineralized selectively in the limestone formation.
(4) high grade ore deposits are localized in concave and convex boundaries of granite porphyry, and hanging walls of shale bed (P₂S shale bed) in Pungchon Limestone formation and
(5) skarn minerals are consisted of garnet, hedenbergite, diopside, and sulfide minerals are composed of zincblenede, galena, phyrhotite, pyrite and some amount of chalcopyrite and arsenopyrite.