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Magnetic Mineralogical Characteristics of Hamersley Iron Ores in Western Australia

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DOI: 10.4236/jamp.2015.32023    2,480 Downloads   2,809 Views   Citations
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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.

Conflicts of Interest

The authors declare no conflicts of interest.

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.

References

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