Sangdong Tungsten - Molybdenum Project
A World-class Tungsten-Molybdenum Deposit
Located south east of Seoul, the Sangdong tungsten-molybdenum mine was one of the world's largest producing mines between 1947 and 1992. The mine closed prematurely in 1992 due to low metal prices. The Sangdong Mine had historical production rates of 600,000 tpa mainly from the six-metre thick Main Vein. Drilling by KORES during 1980-1987 discovered a deep molybdenum deposit below the remaining tungsten skarn resources.
The Korean Peninsula consists of three Archaean age blocks; the Nangrim-Pyeongnam Block, and the Gyeonggi and Yeongnam Massifs. These are separated by younger Phanerozoic age, north east trending mobile belts, the Imjingang and Okcheon belts.
The Sangdong Property is located within the Okcheon Belt which is a fold and thrust belt sandwiched between the Gyeonggi Massif to the north-west and the Yeongnam Massif to the south-east. (Figure 1) The belt is Cambrian to Ordovician in age and consists of sedimentary and volcanic rocks which have undergone weak to moderate metamorphism. Later during the Jurassic to Cretaceous periods, plutonic intrusions of predominantly biotite rich granites were emplaced throughout the Okcheon Belt.
Past Producing Tungsten Mine
The Chongyang Mine is a past producing tungsten mine and is 100% owned by Woulfe Mining. The mine which is located south of Seoul ceased production in 1977. Woulfe's three Mining Rights cover a 10 square kilometre area.
Chongyang Mine
Previous Work at Chongyang
Five individual north-north west trending quartz-wolframite veins were exploited over a 2km strike length down to 16 levels. The mine exploited a tungsten-molybdenum-silver-zinc mineralized and greisen altered granite porphyry that has intruded granite gneiss and metasediment basement rocks. The mine was previously evaluated for gold by Indochina Goldfields in 1995, when the bulk tonnage open pit potential for tungsten-molybdenum mineralization was recognized.
Work Program
Woulfe Mining intends evaluating the bulk tonnage open pit potential of this deposit by drill testing (1,500m diamond core drilling).
In late 2009, a preliminary 450m diamond core drilling programme commenced.
Muguk Mine - Formerly South Korea's Largest Gold Mine
The Muguk Mine was historically South Korea's largest gold producer, with recorded production of 8.15 tonnes of gold mined between 1934 and 1972. Muguk was reopened from 1987 to 1998 with production at a rate of 200 tonnes per day, all from the No. 2 Vein. The previous explorers identified more than 20 separate sub parallel vein systems, with at least 6 individual vein systems traceable over 1.3 - 2.2 km strike lengths. Individual veins are 0.1 to 3.0 m wide and are hosted in Cretaceous-age granite. Individual shoots within the No.2 Vein have been exploited down to 750 m depth, with mill recoveries historically averaging 95.7%.
Mineralization at Muguk is considered to be a deep level, multi-phase low sulphidation epithermal system, comprising grey chalcedonic banded veins and stockworks. Higher gold grades are associated with electrum-bearing sulphide bands on the margins of these veins. In 1998, Muguk was reported by KORES to contain a combined resource of 1,418,980 tonnes @ 13.5 g/t gold, 72.8 g/t silver (615,956 oz gold and 3,321,599 oz silver).
A qualified person has not done sufficient work to classify this historical resource as current mineral resources.
Work Program
Woulfe will evaluate the potential at Muguk to establish a high grade gold-silver mine or a bulk tonnage low grade gold-silver mine exploitable by open pit. If established, a central milling complex at Muguk could potentially exploit additional high grade gold-silver resources from satellite deposits identified in the surrounding region.
A NI-43-101 technical report on Muguk is being prepared by Watts, Griffis McOuat
Ogchon Uranium Project - Uranium Properties
Woulfe’s uranium tenements lie within the Okcheon Metamorphic Belt (OMB), a north east-trending fold-and-thrust belt extending some 150km through the middle of Korea in a belt about 30km wide. The regional city Daejeon lies within the OMB, situated some 150km south-south east of Seoul.
Yeonwha Mine
The Yeonwha 1 lead-zinc property lies approximately 20 kilometres to the south east of Sangdong within the historic Taebaeksan mining district of South Korea. At least 60 tungsten-molybdenum and lead-zinc bearing metallic deposits occur in this district, including numerous known lead-zinc deposits of 2 to 12 million tonnes size with combined lead-zinc grades of approximately 10% usual.
The Yeonwha 1 Complex consists of three past-producing mines, Taebaek, Bonsan and Dongjeom. These deposits were mined from the early 1960’s to the early 1990’s and were regarded as the most important mines in the Taebaeksan district.