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A study of rock magnetism of high-grade hematite ores

journal contribution
posted on 06.12.2017, 00:00 authored by Wanwu GuoWanwu Guo
Rock magnetism is useful in various applications. Hematite is one of the two most important carriers of magnetism in the natural world and its magnetic features were mostly studied through laboratory experiments using synthetic hematite samples. A gap exists between the magnetic behaviors of hematite contained in the natural rocks and ores and those of synthetic hematite samples. This paper presents the results of a rock magnetism study on the natural hematite ores from the Whaleback mine in the Hamersley Province in the northwest of Western Australia. It was found that high-grade hematite ores carry a much higher remanent magnetization than induced magnetization. Hematite ores with less than 0.1% magnetite appear to have an exponential correlation between the bulk susceptibility and hematite content in weight percentage, different from the commonly accepted linear relationship between the bulk susceptibility and hematite content obtained from synthetic hematite samples. The new knowledge gained from this study contributes to a better understanding of magnetic behaviors of hematite, particularly natural hematite, and hence applications to other relevant disciplines.

History

Volume

3

Issue

2

Start Page

156

End Page

160

Number of Pages

5

eISSN

2327-4379

ISSN

2327-4352

Location

USA

Publisher

Scientific Research Publishing

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Not affiliated to a Research Institute; School of Engineering and Technology (2013- );

Era Eligible

Yes

Journal

Journal of applied mathematics and physics.