Greenfield nickel sulphide exploration using airborne and ground EM techniques in the eastern arunta region, NT.

Andrew Thompson; Jim McKinnon-Matthews

doi:10.1071/ASEG2009ab073

ISSN: 2202-0586
E-ISSN:

oa Greenfield nickel sulphide exploration using airborne and ground EM techniques in the eastern arunta region, NT.
Authors Andrew Thompson^a,c and Jim McKinnon-Matthews^b,d
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^a Minotaur Exploration Ltd, ^b Mithril Resources Ltd ^c [email protected], , ^d [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2009, Issue ASEG2009 - 20th Geophysical Conference, Dec 2009, p. 1 - 13
DOI: https://doi.org/10.1071/ASEG2009ab073
- Published online: 01 Dec 2009

Abstract

Summary

A VTEM survey was conducted in the search for magmatic nickel-copper sulphide mineralization in the poorly explored Irindina Province of the Eastern Arunta Region, NT . The VTEM data was analysed for prospective targets and selected priority targets were followed up with B Field moving loop ground EM.

The ground EM followup survey over the highest priority target showed that the VTEM data is biased toward the shallower conductors and was not able to identify the deeper higher conductance targets. Drilltesting and subsequent downhole EM surveys confirmed the VTEM and ground EM targets were caused by disseminated, stringer and semi massive sulphides (pyrrhotite and pyrite with subordinate chalcopyrite) interpreted to be derived from a skam style of mineralizing event.

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2009-12-01

2026-01-21

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References

Scrimgeour, I.R. 2003: Developing a revised framework for the Arunta Region: in Annual Geoscience Exploration Seminar (AGES) 2003. Record of Abstracts. ‘Northern Territory Geological Survey, Record 2003-0001.
Witherly, K., Irvine, R. and Morrison, E., 2004, The Geotech VTEM time-domain helicopter EM system, 74th Ann. Inter- nat. Mtg.: Soc. of Expl. Geophys., 1217-1220.
Witherly, K. and Irvine, R., 2006, The VTEM airborne electromagnetic system-benchmarking continuous improvement via repeat surveys over time. 76th Annual International Meeting, SEG, SEG Expanded Abstracts 25, 1273 (2006);
Witherly, K. and Irvine, R., 2007 Mapping targets of high conductance with the VTEM airborne EM system presented at the ASEG Conference 2007 - Perth, Western Australia

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Article Type: Research Article

Keyword(s): DHEM; Greenfield; ground EM; Nickel; Northern Territory; VTEM

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oa Greenfield nickel sulphide exploration using airborne and ground EM techniques in the eastern arunta region, NT.

Abstract

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