Results have been received for two RC drilling programs completed at the Burns prospect during the July to October 2021 period.

Lefroy Exploration has received the results from two reverse circulation (RC) drill programs evaluating the Burns copper-gold prospect in the company’s Eastern Lefroy tenement package in Western Australia, which demonstrate a growing copper-gold-silver system.

Results have been received from the remaining five holes of a nine-hole program completed in July as well as from a single hole of a recent 17 RC hole Burns corridor program, which evaluated multiple magnetic anomalies along a 3,000m corridor north of Burns.

The Burns copper-gold prospect is situated on the eastern margin of a large interpreted felsic intrusion, termed the Burns Intrusion within the wholly owned greater Lefroy Gold Project (LGP), 50km southeast of Kalgoorlie.

Lefroy (ASX:LEX) is now preparing for a stage 2 offshore drilling program to assess the footprint of the greater system extending beneath Lake Randall, which is expected to kick off shortly.

Evidence of growing footprint

LEX managing director Wade Johnson said the results provide evidence to the growing footprint of the Burns system.

“The single results from altered diorite from the edge of Lovejoy are exciting and we are very keen to get the lake drilling underway to further expand the system and make that breakthrough that leads to a large copper-gold-silver discovery,” he said.

The single hole result from LEFR297 tested the edge of the Lovejoy magnetic target beneath Lake Randall, which intersected strongly altered diorite porphyry similar to that observed at Burns, 200m to the southeast.

Assays include:

  • 10m at 0.21g/t gold, 0.60% copper and 2.5g/t silver from 218m, including 2m at 0.41g/t gold, 1.56% copper and 5.5g/t silver from 225m; and
  • 8m at 0.22g/t gold, 0.51% copper and 1.75g/t silver from 250m, including 2m at 0.67g/t gold, 1.53% copper and 5g/t silver from 256m.
Lefroy Exploration
The Lefroy Gold Project highlighting Eastern and Western Lefroy, the Burns prospect and proximity to Lucky Strike. Pic: Supplied

Results from the final five holes of the July RC program drilled at Burns support and extend mineralisation in both the Eastern Porphyry and the Western Basalt.

Highlights include:

  • 11m at 1.45g/t gold, 0.10% copper and 0.59g/t silver from 108m, including 2m at 5.04g/t gold, 0.13% copper and 1g/t silver from 114m;
  • 40m at 0.07g/t gold, 0.14% copper from 42m ; and
  • 2m at 3.96g/t gold from 284m.

Ongoing Burns program

Lefroy says the key objective to progress evaluation of the Burns system in the December Quarter is the completion of the aircore (AC) drilling in Lake Randall to evaluate multiple targets near to Burns.

This stage 2 program, which is set to begin shortly, will evaluate multiple targets beneath Lake Randall and fill the geological knowledge gap to the east of the Burns anomaly.

The combined results from this AC and the recent RC drill program will provide the broad geochemical and geological baseline framework over the 3000m trend to then focus more on detailed drill evaluation.




This article was developed in collaboration with Lefroy Exploration, a Stockhead advertiser at the time of publishing.


This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.