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Oxygen, Sulfur and Lead Isotopic Compositions and Sources of the Ore Metals of Dapai Iron Polymetallic Deposit in Southwestern Fujian Province
Author(s) -
FENG Haibin,
ZHANG Da,
DI Yongjun,
VATUVA Absai
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12384_5
Subject(s) - beijing , china , chinese academy of sciences , library science , geology , history , archaeology , computer science
The Dapai iron polymetallic deposit is found in Southwestern Fujian. Geotectonically, it is located along the southern margin of the polymetallogenic of Southwestern Fujian Depression belt. This area is one of the important ore concentrated areas in southeastern China. It hosts many iron polymetallic deposits, including the Makeng iron mine, Pantian iron mine, Luoyang iron mine, Yangshan iron mine, Zhongjia iron mine, etc and it has high potential for further mineralization. Domestic and foreign scholars have done a lot of research work on Makeng iron ore and proposed various models about the genesis of Makeng iron deposit. Several perspectives can be summarized as follows: marine volcano sedimentaryhydrothermal reformation deposit, skarn deposit of strata bound calcium type, volcanic hydrothermal-sedimentary deposit etc. The Dapai iron polymetallic deposit, which is an important component of the newly found "Makeng type" iron ore, has been poorly researched. The application of the current state-of-art techniques such as isotopic geochemistry to decipher the genesis of the deposit has not been realized on Dapai. It is still not clear whether the ore-forming materials came mainly from the Late Mesozoic acidic intrusive rocks or other sources. Based on the established geological characteristics of Dapai iron polymetallic deposit, major minerals of the deposits; magnetite, garnet, pyrite, sphalerite and galena has been selected to test for oxygen, sulfur and lead isotopic compositions in order to trace the sources of the ore-forming materials of the Dapai iron polymetallic deposit and to further investigate the geological significance of "Makeng type" iron polymetallic deposits in southwestern Fujian. 2 Geological Features of Ore Deposit