Discovery of the Moran massive nickel sulphide deposit using down-hole transient electromagnetic surveying

David M. Johnson; Somealy Sheppard; Jacob Paggi; John Coggon

doi:10.1081/22020586.2010.12041839

ISSN: 2202-0586
E-ISSN:

oa Discovery of the Moran massive nickel sulphide deposit using down-hole transient electromagnetic surveying
Authors David M. Johnson^a, Somealy Sheppard^b, Jacob Paggi^c and John Coggon^d
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^a Independence Group NL, PO Box 496, South Perth WA 6951, [email protected] ^b Lightning Nickel Pty Ltd, PO Box 318, Kambalda WA 6442, [email protected] ^c Independence Group NL, PO Box 496, South Perth WA 6951, [email protected] ^d Mines Geophysical Services 16 Victoria St, Kalgoorlie WA 6430 [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2010, Issue ASEG2010 - 21st Geophysical Conference, Dec 2010, p. 1 - 4
DOI: https://doi.org/10.1081/22020586.2010.12041839
- Published online: 01 Dec 2010

Abstract

Summary

The Moran nickel orebody was discovered in 2008 when underground drill-hole LSU-152 intersected a 12.3 m thick interval of mineralisation with an average grade of 6.0% Ni. The discovery drill-hole had been designed to test a strong conductor detected by transient electromagnetic surveys read in drill-holes that had passed above and below Moran.

Moran is located approximately 1.1 km south of the Long orebody. Both orebodies are interpreted to be hosted within the same komatiite lava channel. The exploration program was premised on the observation that fertile komatiite lava channels are often mineralised over significant distances. Diamond drill-holes were drilled from underground mine workings in order to test the target lava channel to the south of Long over 1.7 km of strike. Recognition of potential ore-hosting environments, integrated with conductor models developed from DHTEM data, were keys to success.

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References

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Gresham, J.J. and Loftus-Hills, G.D., 1981, The geology of the Kambalda nickel field, Western Australia: Economic Geology, 76, 1373-1416.
Lamontagne, Y., Macnae, J.C., and Polzer, B.D., 1988, Multiple conductor modelling using program MultiLoop: SEG Annual meeting abstracts, Anaheim, 237-240.
Lesher, C.M., 1983, Localization and genesis of komatiiteassociated Fe-Ni-Cu sulphide mineralization at Kambalda, Western Australia: PhD thesis (unpublished), University of Western Australia.
Marston, R.J., Groves, D.I., Hudson, D.R. and Ross, J.R., 1981, Nickel sulphide deposits in Western Australia: A review, Econ. Geol., 76, 1330-1363.
Naldrett, A.J., 1973, Nickel deposits – Their classification and genesis with special emphasis on deposits of volcanic associations: Trans Can Inst Mining Metallurgy, 76, 183-201.
Ross, J.R., and Hopkins, G.M.F., 1975, Kambalda nickel sulphide deposits, In Economic Geology of Australia and Papua New Guinea – I-Metals (ed C.L. Knight), Austral. Inst. Min. Metall., Monograph 5, 100-121.

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Article Type: Research Article

Keyword(s): DHTEM; Kambalda; Moran; nickel

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oa Discovery of the Moran massive nickel sulphide deposit using down-hole transient electromagnetic surveying

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