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Thor Mining identifies conductive anomaly at Ragged Range

Published by , Editor
Global Mining Review,


The directors of Thor Mining Plc has announced that the recently completed electromagnetic geophysics survey over the nickel gossan at the Krona Prospect identified a conductive anomaly at the company's 100% owned Ragged Range Project, located in the Eastern Pilbara, Western Australia.

Project highlights:

  • A high-powered fixed loop electromagnetics (FLEM) ground geophysics survey has identified a shallow conductor beneath the nickel gossan at the Krona Prospect.
  • The conductor is consistent with sulfides and warrants drill testing to validate.
  • The nickel gossan is located at the basal contact of the Dalton Suite ultramafic unit (altered Archean Komatiite) in the classic location for nickel-copper sulfide mineralisation.
  • The shallow conductor will be drill tested including downhole EM, as part of the upcoming reverse circulation (RC) drilling programme scheduled to commence week beginning 27 June at the Sterling Gold Prospect.

Nicole Galloway Warland, Managing Director of Thor Mining, commented: “I am encouraged that the first ground geophysics survey at Ragged Range has identified a shallow electromagnetic conductor. The target is modelled at around 100 m below the surface, establishing it a clear drill target for the upcoming RC drilling programme.

“We look forward to drill testing this anomaly as part of our RC drilling programme, scheduled to commence at Sterling Prospect.”

Krona Prospect – Nickel Gossan

A high-powered FLEM ground geophysics survey was completed over the Krona Prospect, covering the full extent of the nickel gossan, located in the western portion of the tenure. This is the first ground geophysics survey on the Ragged Range Project. The survey over the gossan was designed to detect conductive anomalies at depth that may indicate the presence of massive nickel-copper sulfide mineralisation to constrain initial drill testing.

A single loop FLEM survey over the Krona prospect identified a conductor at the southern end of the gossan. The conductor was modelled as a shallow flat lying feature approximately 100 m deep and is consistent with sulphides. The shallow (100 m) conductor gives Thor a clear drill target, that will be drill tested as part of the upcoming RC programme at the adjacent Sterling Prospect.

The gossan was initially identified by the Western Australian Geological Survey on the Split Rock 1:100 K mapping explanatory notes (Bagas et al., 2004). The gossan extends over 1 km x 100 m and lies on the basal contact of the Dalton Suite ultramafics, with the older Wyman Formation, felsic volcanics.

Next steps

  • Commence RC drilling programme at Sterling Prospect, following up on structurally controlled anomalous gold in streams and soils.
  • Drill test EM conductor at Krona Prospect as part of RC drilling programme, with downhole EM.
  • An airborne magnetic/radiometric survey, scheduled to be flown over the eastern portion of the tenure (including E46/1340 and E46/1393) in the near future.
  • Continue regional exploration, focusing on both lithium priority areas and the copper-gold historic workings in the northeastern portion of tenure.

Read the article online at: https://www.globalminingreview.com/exploration-development/20062022/thor-mining-identifies-conductive-anomaly-at-ragged-range/

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Australian mining news Nickel mining news