THE DISCOVERY OF ADULAR AND ITS GEOLOGICAL SIGNIFICANCE IN GULIKU GOLD(SILVER) DEPOSIT

Epithermal gold deposits can be divided into two types:adular-sericite-and alunite-kaolinite-types.These deposits, found in circum-Pacific area, the Mediterranean-Himalayas and Mogolia-Okhotsk zones, are commonly large and superlarge scale. Most of the gold deposits are in continental margins and island arcs and closely related to continental volcanic rocks and structures. The volcanic rocks hosting the gold deposits are acid or alkali and dominantly high-oxideized I-type or magnetite-series. Some gold deposits' wallrocks are metasedi-mentary basic rocks. Beneath some gold deposits occurintrusive rocks. Most of the gold deposits were formed in Mesozoic or Cenozoic.