The Borden Gold Deposit, northern Ontario: Contributions of VTEM helicopter time-domain EM and magnetics leading to discovery

Marta Orta; Jean M. Legault; Karl Kwan; Sergio Espinosa

doi:10.1080/22020586.2019.12072982

2nd Australasian Exploration Geoscience Conference: Data to Discovery

ISSN: 2202-0586
E-ISSN:

oa The Borden Gold Deposit, northern Ontario: Contributions of VTEM helicopter time-domain EM and magnetics leading to discovery
Authors Marta Orta^a, Jean M. Legault^b, Karl Kwan^c and Sergio Espinosa^d
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^a Consultant Vaughan, , CANADA, [email protected] ^b Geotech Ltd Aurora, , CANADA, [email protected] ^c Geotech Ltd Aurora, , CANADA, [email protected] ^d Goldcorp Inc., Vancouver, , CANADA, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2019, Issue 2nd Australasian Exploration Geoscience Conference: Data to Discovery, Dec 2019, p. 1 - 5
DOI: https://doi.org/10.1080/22020586.2019.12072982
- Published online: 01 Dec 2019

Abstract

Summary

The Borden Gold deposit (9.3 Mt @ 5.3 g/t Au) is a structurally controlled Archean mesothermal lode gold deposit within the Kapuskasing Structural Zone, in northern Ontario. Helicopter VTEM and magnetic surveys were flown over the Borden Gold deposit, helping to design the first drilling program, leading to the discovery in 2010. Initial survey results defined the extension of the near surface low-grade-zone (LGZ). Advanced processing and modelling of VTEM data also appears to map the deeper high-grade-zone (HGZ). Results of subsequent 1D imaging and 2.5D inversions, and airborne inductive induced polarization (AIP) analysis, are also presented.

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References

Dzick, W., 2014, Mineral Resources Estimate Update, Borden Gold Project: NI 43-101 report for Probe Mines Ltd. by Snowden Mining Industry Consultants, project No. V1393, 179 p.
Fiset, N., Kumar, H., Prikhodko, A., 2011, Report on a helicopter-borne VTEM Plus and Horizontal Magnetic Gradiometer geophysical survey, Borden Lake project & White Owl project, Chapleau, Ontario: Internal report, Geotech Ltd., 84 pp
Kaminski, V., Legault, J., Smith, G., Venter, N., 2010, Report on a helicopter-borne VTEM Plus and aeromagnetic geophysical survey, Borden Lake block, Chapleau, Ontario: Internal document, Geotech Ltd., 46 pp
Kratzer, T., Macnae, J., 2012, Induced polarization in airborne EM: Geophysics 77, E317–E327.
Kwan, K., Prikhodko, A., Legault, J.M., Plastow, G., Xie, J., Fisk, K., 2015, Airborne Inductive Induced Polarization Chargeability Mapping of VTEM Data: ASEG-PESA 24th International Geophysical Conference and Exhibition, Extended Abstracts, 4 pp
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Murahwi, C, Gowans, R., and San Martin, A.J., 2012, Technical report on the updated mineral resources estimate for the Borden Lake Gold Deposit, Borden Lake property, northern Ontario, Canada: NI 43-101 report for Probe Mines Limited by Micon International Limited, 188 pp.
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/content/journals/10.1080/22020586.2019.12072982

Article Type: Research Article

Keyword(s): AIP; Archean; electromagnetics; lode gold; modelling

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