Airborne EM survey over the Groote Eylandt manganese mine

Richard Irvine; Harald Berents

doi:10.1071/ASEG2001ab062

ISSN: 2202-0586
E-ISSN:

oa Airborne EM survey over the Groote Eylandt manganese mine
Authors Richard Irvine^a and Harald Berents^b
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^a Condor Consulting, Inc, .(USA, ) [email protected] ^b Garrisons Pty. Ltd, .( Aust.) [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2001, Issue ASEG2001 - 15th Geophysical Conference, Dec 2001, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2001ab062
- Published online: 01 Dec 2001

Abstract

A Geotem® airborne electromagnetic (AEM) survey was flown over the Groote Eyiandt manganese mine in May 1991 to characterize the conductivity and magnetic properties of the manganese ore and host rocks, in order to assess if AEM was viable in exploration for such a deposit type. Strong EM responses correlated with most of the known manganese ore zones. Subsequent drill hole EM surveys confirmed the conductive nature of most of the different types of ore. These results demonstrate that AEM is a cost-effective method of reconnaissance exploration for Groote Eyiandt style manganese, providing the host rocks are comparatively resistive.

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2001-12-01

2026-01-21

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References

Berents, H. and Irvine, R., 1991, Groote Eylandt Geotem Survey, BHP Minerals unpublished report.
Bolton, B.R., Berents, H.W. and Frakes, L.A., 1990, Groote Eylandt manganese deposit, in Geology of the Mineral Deposits of Australia and Papua New Guinea (Ed. F.E. Hughes), pp 1575-1579 (The Australasian Institute of Mining and Metallurgy, Melbourne).
Dentith, M.C., Francombe, K.F. and Trench, A., 1994, Geophysical signatures of Western Australian mineral deposits: an overview, in Geophysical signatures of Western Australian mineral deposits, eds. M.C. Dentith, K.F. Francombe, S.E. Ho, J.M. Shepherd, D.I. Groves and A. Trench, Uni. W. Aust, Dep. Geol. Geoph., pp 29-84.
Liu, G. and Asten, M., 1993, Conductance-depth imaging of airborne TEM data, Expln. Geophysics, 24, pp 655-662.
Paish, K., 1995, Downhole conductivity survey (EM39) -Groote Eylandt, BHP Minerals unpublished report.

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Article Type: Research Article

Keyword(s): AEM; conductivity; Groote Eyiandt; manganese

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