Lefroy’s geological interpretation of the new and exciting Eastern Porphyry has been confirmed after the deposit was intersected over 200m of strike.

All six of the reverse circulation holes it drilled as pre-collars for the upcoming diamond drilling campaign intersected the Eastern Porphyry on five consecutive 40m spaced east-west sections.

These holes also ended in variably altered porphyry.

Visible gold was observed in hole LEFR283 that was drilled 40m north of the outstanding 20m intercept grading 12.2 grams per tonne gold, 0.87 per cent copper and 1.7g/t silver from 144m that is itself located within a 60m thick, high-grade zone of 5.22g/t gold and 0.38 per cent copper from 112m at LEFR260.

LEFR283 intersected 18m of magnetite-sulphide altered porphyry to end of hole with the visible gold appearing in a 2m interval from 127m.

Lefroy Exploration (ASX:LEX) noted that the Eastern Porphyry remains open to the north and its eastern limit is unknown beneath Lake Randall.

Assays for the pre-collars are expected in mid-April while assays are also pending for earlier diamond drilling at the Burns copper-gold prospect where the Eastern Porphyry is located and 1m RC resampling.

lefroy exploration visible gold burns eastern porphyry
Gold in RC drill chip of altered porphyry from 128-129m in LEFR283. Pic: Supplied

Burns is on the eastern margin of an interpreted intrusion that does not outcrop and is represented by a distinctive annular aeromagnetic and gravity geophysical signature.

It is located within the Eastern Lefroy tenement package, which is part of the company’s wholly-owned greater Lefroy gold project about 50km southeast of Kalgoorlie.

Upcoming activity

Lefroy now has 14 RC pre-collars prepared for diamond tails to evaluate the Eastern Porphyry over a 200m strike length on 40m spaced drill sections.

The first hole will be a diamond hole to twin and extend past the high-grade interval in LEFR260 while the second will test 50m vertically beneath the mineralisation in LEFR260.

Diamond drilling is expected to begin in mid-April.

In addition, planning for additional RC drilling focussing on extensions to Burns and initial evaluation of the Smith magnetic anomaly is currently underway.




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.