Thomson Resources hits mineralised greisens in drilling at Bygoo tin project

Junior explorer Thomson Resources (ASX: TMZ) has intersected further strong mineralised greisens in recent drilling at the wholly-owned Bygoo tin project in the Lachlan Fold Belt of New South Wales.

The company completed 13 holes for 1870 metres with most holes aimed at extending and delineating the new Stewarts discovery which sits 300m north-west of the main zone and is more than 50m thick at its widest point.

The holes were following up an intersection of 118m grading 0.43% tin from 57m depth.

Wide greisen intersections with downhole widths of 75m, 113m, 60m, 79m, 66m and 80m were the result of holes drilled at different angles and orientations to better understand the geometry.

Additional reverse circulation holes extended the Dumbrells, P380 and Smiths mineralised zones.

Two diamond holes were also completed to gain additional data ahead of a maiden mineral resource estimate for Bygoo later this year.

The holes retrieved solid core which is expected to provide vital information on mineralogy and orientation of tin zones as well as specific gravity for resource estimation.

Challenging season

The latest drilling season has been a challenging one for Thomson, with adverse weather conditions and harvesting operations putting a stop to drilling at Bygoo and at the Harry Smith gold prospect.

Both targets sit on a cultivated and ploughed paddock which becomes inaccessible with even modest rainfall.

All zones at Bygoo and Harry Smith remain open and will be fully extended and delineated across the next drilling season.

Executive chairman David Williams said the company worked around the challenges where possible.

“This has been a difficult season for drilling at the Lachlan Fold Belt projects, but our teams have persisted and managed to complete a good program at Bygoo,” he said.

“This should give us sufficient data to complete a resource estimate for the project which was our aim … the mineralised zones keep extending when we drill which shows what a great tin project this is.”

Delayed assays

Mr Williams said assays had also been delayed due to equipment supply chain and staffing issues at Thomson’s laboratory.

Reverse circulation results are now not expected until late May, while diamond results will take longer.