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Infinity Mining builds Leonora gold resource to 63,000 ounces

Updated: May 2

Infinity Mining sees ample evidence of historic gold mining at its Great Northern project near Leonora. Credit: File

Infinity Mining has topped up its total gold resource inventory to 63,000 ounces with the addition of a maiden 2700-ounce gold resource estimate from its Great Northern project in the historic Western Australian Goldfields town of Leonora.

The company has 10 mineral tenements in the Leonora district – comprising seven separate projects – and is developing a portfolio of gold resources throughout the region, with its eye on an initial 500,000-ounce target.

In addition to Great Northern, the company’s current inventory comprises more than a million tonnes at a grade of 1.38g/t gold for a total of 48,600 ounces at Craig’s Rest, its northernmost project that sits about 60km north of Leonora. It also has its Victor Bore operation, about 10km north of Leonora, which is estimated to have 234,000 tonnes at a grade of 1.56g/t gold for a contained 11,700 ounces.

Infinity’s total resource inventory now comprises 1.387 million tonnes at an average grade of 1.41g/t gold for the 63,000 ounces.

The company’s first drilling at Great Northern in 2022 jagged a nice hit in one reverse-circulation (RC) hole, intersecting 4m running 3.68g/t gold from 30m depth including 1m going a useful 10.95g/t gold from 32m.

And in April last year, it revealed that another RC drillhole intersected 3m going 2.9g/t gold from 64m including 1m at 7.49g/t gold from 65m, in addition to further 1m intercepts in two additional holes running at 3.5g/t below 70m.

Management says the current estimates are all in the inferred category, implying that further work will be required to flesh them out to indicated or mining resource categories – as is the way of almost all projects in their infancy. It says its drilling database includes 90 drillholes for all prospects and that while a further 19 rotary air-blast (RAB) holes drilled for a total of 648m are in the database, they were not incorporated into the resource estimates.

Importantly, the company details its methods of intersection selection, stating that its minimum required lode width for inclusion was 2m and lode ends were extended by about 5m, which is a justifiably conservative approach.

Infinity says at Great Northern, its interpretation details two lodes to a maximum of 110m along strike. It also says the south-eastern extremity remains open and that the lode system remains open at depth below current drilling limits.

The company believes its resources have potential as future mining ventures in view of their surface exposure, shallow depth and free-dig potential above the weathering horizon, in addition to the fact that they are confined within an easily open-pittable 100m depth below surface.

Management says it has not yet undertaken any metallurgical studies, believing such work at this early stage to be premature. But it expects ore behaviour to be similar to that at other nearby operations, many of which rely on carbon-in-leach (CIL) technology, implying a non-refractory, low sulphide content.

Infinity has got its foot on good ground in the Central Goldfields – one of the nation’s greatest mineralised provinces – with all tenements being within the area of influence of major greenstone belts and their associated major structures that include the Keith-Kilkenny and Perseverance fault systems within the famed Norseman-Wiluna Belt.

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