The Bug-ap orebody in the Shinyemi lead, zinc and molybdenum deposits is emplaced in altered felsite at the 435mL on east district of the Shinyemi mine. It is consist of skarn type and massive type ore. Garnet is major skarn minerals, composition ranges of garnet are An._(25-.62) Gr._(35-.71), belongs to grandite series. Garnet under the microscopic observation has isotropic features on central part and anisotropic features on rim, this fact tells that formation temperature ranges of garnet are very wide. Sphalerite, galena and molybdenite are main ore minerals associated with pyrrhotite, chalcopyrite, pyrite, arsenopyrite, tetrahedrite, electrum, sheelite and marcasite. By the fluid inclusion study, ore minerals were deposited at temperature between 315 and 350℃ from fluids with salinities of 6.4 to 10.4 wt.% equivalent NaCl. Sulfur fugacity inferred from data of mineral assemblage and FeS mole % of sphalerite ranges from 10^(-9) to 10^(-10) bars. Lithostatic pressure estimated from fluid inclusion study ranges from 460 to 320 bars during mineralization.

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