JAMP  Vol.3 No.2 , February 2015
Magnetic Mineralogical Characteristics of Hamersley Iron Ores in Western Australia
Author(s) William W. Guo
ABSTRACT

This paper presents the research outcomes of a magnetic mineralogical study on Hamersley iron ores. Thermal magnetic analysis shows that typical high-grade martite-microplaty hematite or M- (mpl H) and martite-microplaty hematite-goethite or M-(mpl H)-g ores contain a small amount of original magnetite. A small amount of magnetite/maghemite and pyrite/pyrrhotite/siderite may exist in typical martite-goethite (M-G) and martite-ochreous goethite (M-oG) ores. In “the hardcap zone”, M-(H)-g ores contain a small amount of magnetite and maghemite. Compared with XRD, thermal magnetic analysis is not only more sensitive in identifying trace of magnetite contained in high-grade hematite ores, but also more diagnostic in identifying other unstable magnetic minerals like maghemite and pyrite/pyrrhotite/siderite co-existed in the ores.


Cite this paper
Guo, W. (2015) Magnetic Mineralogical Characteristics of Hamersley Iron Ores in Western Australia. Journal of Applied Mathematics and Physics, 3, 150-155. doi: 10.4236/jamp.2015.32023.
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