Geophysical Discovery and Evaluation of the West Peko Copper-gold Deposit, Tennant Creek

T. Hoschke

doi:10.1071/EG991485

ISSN: 0812-3985
E-ISSN: 1834-7533

Geophysical Discovery and Evaluation of the West Peko Copper-gold Deposit, Tennant Creek
Authors T. Hoschke^a
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^a GeopekoPO Box 1165 Milton, Qld, 4064
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 22, Issue 3, Sep 1991, p. 485 - 495
DOI: https://doi.org/10.1071/EG991485
- Received: 06 May 1991
- Published online: 01 Sep 1991

Abstract

A drill hole magnetometer developed to assist exploration for gold and copper bearing magnetite bodies (ironstones) has aided in the discovery of two large mineralised ironstones at depths between 400m to 650m below surface in the Tennant Creek area of the Northern Territory. These bodies are surrounded by a broad zone of sediments containing magnetite, the magnetic response of which dominates the surface anomaly. A 600 metre wildcat hole was drilled and subsequently surveyed using the magnetometer which detected a large magnetic anomaly towards the bottom of the hole. Follow up drilling and interpretation of magnetic surveys successfully guided exploration in the definition of significant bodies of ironstone.

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1991-09-01

2026-01-14

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References

Clark, D. A., Saul, S. J., and Emerson, D. W. (1986), Magnetic and gravity anomalies of a triaxial ellipsoid, Exploration Geophysics 17, 189-200.
Clark, D. A., and Tonkin, C. (1987), Magnetic Properties of Ironstones and Host Rocks from the Tennant Creek Area, CSIRO Restricted Investigation Report 1691R (unpubl.).
Daly, J. (1957), Magnetic Prospecting at Tennant Creek, NX, 1935-1937, Bureau of Mineral Resources Bulletin No. 44.
Farrar, L. J. D. (1979), Some comments on detailed magnetic investigations of ellipsoidal bodies at Tennant Creek, Bull. Aust. Soc. Explor. Geophys. 10, 26-33.
Hoschke, T. G. (1985), A new drill hole magnetometer: preliminary results from the Tennant Creek area, Exploration Geophysics 16, 365-374.
Le Messurier, P., Williams, B. T, and Blake, D. H. (1990), Tennant Creek Inlier – Regional Geology and Mineralisation, in Economic Geology of Australia and Papua New Guinea, Vol. 1, Mono. 14 (Ed. RE. Hughes), pp. 829-838 (The Australasian Institute of Mining and Metallurgy).
Richardson, L. A., Rayner, J. M., and Nye, P. B. (1936), Second Report on Magnetic Prospecting at Tennant Creek, Aerial, Geological and Geophysical Survey of Northern Australia, Report NT 23.
Richardson, L. A. (1958), Geophysical Survey – Tennant Creek Areas, Report on Peko Area, Internal Peko Mines N.L. Report (unpubl).

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Article Type: Research Article

Keyword(s): Drill Hole Magnetometer; Geophysical Exploration; Magnetic Surveys; Tennant Creek

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Geophysical Discovery and Evaluation of the West Peko Copper-gold Deposit, Tennant Creek

Abstract

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