Final assays from Thomson’s 2022 drill program at its Bygoo tin project in New South Wales’ Lachlan Fold Belt have delivered further extensions to the discovered greisens.

The last of four batches of drill results include a 26m intercept grading 2.1% tin from 94m (BNRC85) at the P380 greisen and 25m at 0.5% tin from 59m (BNRC87) at the Smiths greisen.

Thomson Resources (ASX:TMZ) was unable to complete the drill program at Bygoo due to wet weather and farming operations, leaving all five discovered greisens – Main, Dumbrells, Stewarts, P380 and Smiths – open.

Despite this, executive chairman David Williams noted that the outstanding results from the limited number of holes drilled was still pleasing.

“Given the weather conditions during the planned 2021/2022 drilling program severely curtailed the period available to us to drill, the limited number of holes were very pleasing with the continuation of outstanding results.

“Hopefully the weather will be kinder to us for the 2022/23 season and we can complete the desired programs,” he added.

Drill results

The result at P380 was returned from up-dip drilling, extending the relatively new zone which appears to sit about 50m north of, and parallel to, the east-west striking Main zone at Bygoo.

It is named after the historical P380 hole drilled by Cominco in joint venture with the Ardlethan Mine operators in 1976 which intersected 18m at 0.5% tin from 153m down-hole.

P380 was drilled east to west and this suggested that the hole may have skimmed the side of an east-west striking zone.

As a result, BNRC73 was drilled during the 2021 drill program from north to south about 50m updip of P380 and intersected 23m at 1.4% tin.

This led in turn to the most recent BNRC85, which returned its significant intercept a further 40m updip of BNRC73.

Meanwhile, BNRC87 at the Smiths – located about 400m south of Main Zone – returned a significant intercept which extended the mineralisation about 35m east of the previous mineralised hole BNRC31 that was drilled by the company in 2017 and intersected 20m at 0.9% tin.

While hole BSRC02 drilled in 2018 to find an extension of this greisen failed to find significant mineralisation, it led to a new interpretation that Smiths runs between BSRC02 and the old 1976 hole, P292, a view that has been confirmed by the new results at BNRC87.




This article was developed in collaboration with Thomson Resources, 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.