Thompson Resources suspects two lodes could be one system

By Trevor Hoey. Published at Jan 21, 2021, in Mining

Thomson Resources (ASX:TMZ) has received extremely impressive exploration results from its Phase-3 drilling program at the Harry Smith Gold Project, located in the highly prospective Lachlan Fold Belt in New South Wales.

Thomson’s previous drilling programs discovered thick low-grade gold mineralisation from surface as well as deeper high-grade lodes.

The December 2020 drilling program was designed to extend the known mineralisation, and management confirmed that the Silver Spray and Golden Spray lodes to the west and northwest have been extended.

The mineralisation is open to the west and further drilling is planned to extend the lodes in that direction.

Importantly, there is increasing evidence that the Silver Splay and Harry Smith lodes as indicated below are one large system.

Commenting on these developments and discussing the economic significance of establishing that the areas under exploration could be one large system, executive chairman David Williams said, "These latest results from the Harry Smith Gold Project are highly encouraging and mark a further significant exploration success for the company.

"Not only have all holes intersected significant gold, but the continuity of these high-grade and relatively shallow results bodes extremely well for the development of a commercial scale open pit resource.

"This is exemplified by the presence of high-grade mineralisation in holes HSRC17 and HSRC15 which have provided us with evidence that the Silver Spray and Harry Smith lodes are in fact one large system as opposed to two separate lodes.

"With mineralisation remaining open to the west we look forward to getting to work on the next phase of drilling with the objective of extending the known mineralised footprint and delivering further value to shareholders.”

Wide near surface intersections lend themselves to open pit mining

Holes HSRC15 and HSRC17 were drilled in the gap between the small Silver Spray workings and the historic Harry Smith shallow open pit.

Wide intercepts of gold were returned from both holes (90 metres at 0.6 g/t gold from 31 metres depth) with several higher-grade intervals, such as 9 metres at 2.2 g/t gold from 69 metres depth in hole HSRC15.

At Silver Spray, holes HSRC18 and HSRC19 extended the mineralisation down dip with strong, wide intercepts.

As illustrated below, of particular note was HSRC18 with 87 metres at 0.9 g/t gold from a shallow 22 metre depth and a high-grade section at the top of that with 7 metres at 4.4 g/t gold from 23 metres depth.

Various aspects of mineralisation and geological features indicated that some supergene dispersion is occurring, accounting for the wide intercepts.

However, significant quartz veining was logged in these holes at multiple depths throughout the mineralised intervals, suggesting that the width is in fact an original feature.

At Golden Spray, holes HSRC24 and HSRC25 added substantial intercepts to the north-western most section with 18 metres at 1.3 g/t gold from 35 metres depth and 6 metres at 1.1 g/t gold from 102 metres depth respectively, indicating that the mineralisation is open to the north-west.

Given these results, management intends to conduct follow-up drilling, targeting this area.

Management said today that follow-up drilling at Harry Smith is a priority, saying that the upcoming program will commence shortly.

However, it is worth noting as indicated below that Thompson Resources has a number of strings to its bow in New South Wales across both the prolific Lachlan Fold Belt and the New England Fold Belt to the north-east.

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