Spatial and Temporal Relations between Ironstones and Cu-Au Mineralization in the Cloncurry District, Australian
详细信息
- 责任者：Zhang Dexian (School of Resources and Safety Engineering ; Central South University ; Changsha 410083 ; China) ; Dai Tagen
- 刊名：Contributions to Geology and Mineral Resources Research
- 出版年：2013
- 卷期：28(3)
- 关键词：铜矿 ; copper ores ; 金矿 ; gold ores ; 澳大利亚 ; Australia
- 页码：p.448-453
- 图表：2 illus., 24 refs.
- 分类号：1001
- issnNo：ISSN1001-1412
- isbnNo：CN12-1131/P
摘要
Cloncurry district is underlain by Proterozoic rocks in which many world-scale hydrothermal systems occur.The large hydrothermal systerms are closely associated with magnetite or hematite-bearing ironstone.Mineralogy,geochemistry and choronology of oxidation of iron and Cu,Au mineralization indicate that interaction of several fluids and different water/rock reractions during formation of the ores.Study on Na-Ca system of typical ore deposits and areas in Cloncurry district shows that relation of iron oxide-mineralized rock to Cu-Au minerlization can be divided into 4 types:(1)Kiruna type mineralization in which magnetite pr hematite is poor;(2)Cu,Au mineralizatrion occurs in Iron oxide mineralized rocks;(3)Cu,Au mineral;ization related to iron oxides;(4)Cu,Au mineralization with less iron oxides or without iron oxides.This classification reveals some genetic relation of Cu,Au mineralization to iron oxides and provides information about mineralogy and mineralization type.