摘要
A polymetallic zone dominated by U-W mineralization was found in NortheastGuangxi. Distributed along the east contact zone of a complex granite mass, it extends forabout 100 km in length, with more than fifty deposits and prospects embraced. The depositsshow a wide range of genetic types, related to the granite, from magmatic (including peg-matite and skarn deposits) through hydrothermal mineralizations (hypo-, meso- and epither-mal) all the way to tin placers, constituting a very intact metallogenetic series of granites. Theepithermal U-W deposits are considered as a new type for their unique geological and geochemi-cal characters, such as the paragenesis of U and W and the large time gap (>40 Ma) betweenore and granite.
A polymetallic zone dominated by U-W mineralization was found in NortheastGuangxi. Distributed along the east contact zone of a complex granite mass, it extends forabout 100 km in length, with more than fifty deposits and prospects embraced. The depositsshow a wide range of genetic types, related to the granite, from magmatic (including peg-matite and skarn deposits) through hydrothermal mineralizations (hypo-, meso- and epither-mal) all the way to tin placers, constituting a very intact metallogenetic series of granites. Theepithermal U-W deposits are considered as a new type for their unique geological and geochemi-cal characters, such as the paragenesis of U and W and the large time gap (>40 Ma) betweenore and granite.
关键词
铀-钨成矿带
花岗岩
共生矿床
成矿作用
矿床成因
U-W-Sn polymetallic mineralization
metallogenetic series of granite
U-W paragenesis
time gap between ore and granite
metallogeny
