Banded iron formation hosted high-grade hematite deposits, a coherent group?

被引：8
|
作者：
Dalstra, H
Harding, T
Riggs, T
Taylor, D
机构：
[1] Rio Tinto Explorat, Belmont, WA 6984, Australia
[2] Rio Tinto Iron Ore, Perth, WA 6000, Australia
[3] Hamersley Iron Pty Ltd, Perth, WA 6000, Australia
[4] ACT Explorat Consultants Pty Ltd, Ainslie, ACT 2602, Australia
来源：
TRANSACTIONS OF THE INSTITUTION OF MINING AND METALLURGY SECTION B-APPLIED EARTH SCIENCE | 2003年 / 112卷 / 01期
关键词：
banded iron formation; high-grade hematite ores; Hamersley Province;
D O I：
10.1179/037174503225011199
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
High-grade hematite ores in the Hamersley Province of Western Australia are associated with hydrothermal magnetite-apatite and magnetite hematite-carbonate-apatite proto-ores below the modern weathering surface. In addition, hydrothermal alteration of country rocks, once believed to be absent, is now recognised widely in shales and dolerites up to several hundreds of metres away from the ores. Both observations appear to exclude a simple supergene model for ugrading the host iron formations to high-grade hematite ore. Similar hydrothermal proto-ores and country rock alteration are now being recognised in other high-grade hematite deposits worldwide, or have been recognised in the past.
引用
收藏
页码：B68 / B72
页数：5
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