Airborne electromagnetics in Pilbara manganese exploration – a case study

Joe Kita; Adrian Noetzli; Nataya Kusumaputri; Mark Lowe

doi:10.1071/ASEG2012ab254

ISSN: 2202-0586
E-ISSN:

oa Airborne electromagnetics in Pilbara manganese exploration – a case study
Authors Joe Kita^a, Adrian Noetzli^b, Nataya Kusumaputri^c and Mark Lowe^d
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^a GPX Surveys, Belmont, , W.A., [email protected] ^b GPX Surveys, Belmont, , W.A., [email protected] ^c GPX Surveys, Belmont, , W.A., [email protected] ^d GPX Surveys, Belmont, , W.A., [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2012, Issue ASEG2012 - 22nd Geophysical Conference, Dec 2012, p. 1 - 2
DOI: https://doi.org/10.1071/ASEG2012ab254
- Published online: 01 Dec 2012

Abstract

Summary

Airborne electromagnetic methods have been used for manganese exploration in parts of the Pilbara since 2002 when the first Hoistem survey was flown for Pilbara Manganese. A XTEM survey was commissioned by Montezuma Mining to test the effectiveness of the technique in a new manganese province near Kumarina, WA.

A series of test lines was flown over areas of known manganese ore deposits and revealed a successful correlation between the electromagnetic conductors and the known manganese zones. In addition the test lines revealed new zones of conductivity where traces of manganese had been found but not yet drilled. Based on the preliminary results the complete Butcherbird tenement was flown in December 2010.

The survey successfully mapped the extent of the known manganese zones and assisted in the identification and mapping of several new targets which were subsequently drilled and found to bear manganese oxide. The shape of the Electromagnetic (EM) anomaly maps the resource outline and the strength of the EM signal correlates strongly with the grade of the resource.

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2012-12-01

2026-01-13

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References

Hashemi, A. 2002, Inversion of time domain helicopter electromagnetics data for exploration of manganese ore, East Pilbara Western Australia: MSc Thesis, Curtin University of Technology.

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Article Type: Research Article

Keyword(s): Airborne; Electromagnetic (EM); exploration; manganese; Pilbara

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