1 week ago
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Argent Minerals besides grabbed this columnist’s attraction erstwhile it unveiled its latest suite of drilling results, which it says has expanded the mineralised footprint to the north-east astatine its Kempfield polymetallic deposit successful NSW.
The institution plugged successful 12 reverse-circulation (RC) drillholes astatine Kempfield, intersecting shallow, wide and heavy high-grade zones of silver-lead-zinc mineralisation up to 88m from aboveground from the Western Lode country and 29m of thick, high-grade silver-base metallic mineralisation north-east of the Lode 200 assets area.
The 1036m run was aimed astatine extending and defining caller silver-lead-zinc mineralisation zones from the Lode 200 mineralised artifact and to drill-test its occidental zone. Significant grades from the north-eastern hold see 23m astatine 34.41 grams per tonne metallic from 22m successful 1 spread and a 2nd spread intersecting 29m astatine 34.09g/t silver, 0.14 per cent pb and 0.41 per cent zinc from 50m including 10m going 0.31 per cent pb and 0.81 per cent zinc from 64m.
Notable grades from the occidental portion see 1 spread intersecting 0.19 per cent pb and 0.17 per cent zinc from aboveground and 6m moving 21.97g/t silver, 0.64 per cent pb and 0.68 per cent zinc from 81m successful 1 hole, A 2nd spread nailed 88m astatine 25.23g/t silver, 0.1 per cent pb and 0.08 per cent zinc from 2m.
Argent’s flagship Kempfield polymetallic task is 60km south/south-west of Cadia’s elephantine golden and copper mining cognition successful central-west NSW, 250km westbound of Sydney.
Also successful NSW, pursuing an extended caller infill drilling program, West Perth-based golden exploration and accumulation institution Alkane Resources revealed an eye-catching revision of its inferred and indicated assets for its Kaiser copper-gold task successful the Boda territory of NSW, which has accrued management’s assurance successful its assets base.
The caller valuation lifted Kaiser up to an awesome 213 cardinal tonnes astatine 0.55g/t golden equivalent for 3.74 cardinal ounces, based connected mean grades of 0.28g/t golden and 0.20 per cent copper and yielding a contained 1.9 cardinal ounces of golden and 0.42 cardinal tonnes of copper. The caller numbers person raised the indicated assets class astatine Kaiser to 89 per cent of the wide resource, the golden people by 15 per cent and its copper people by 10 per cent.
Alkane says that including Kaiser, the Boda territory has a planetary assets amounting to 796 cardinal tonnes astatine a people of 0.58g/t golden equivalent for 14.7 cardinal ounces, based connected mean grades of 0.33g/t golden and 0.18 per cent copper for a contained 8.3 cardinal ounces of golden and 1.5 cardinal tonnes of copper.
The institution has undertaken important metallurgical testwork and established a elemental functional flowsheet, with wide recoveries astatine Kaiser of 81 per cent for copper and 71 per cent for golden and astatine Boda, 87 per cent for copper and 81 per cent for gold, with a saleable concentrate.
The institution volition usage its revised Boda District resources successful a scoping survey for imaginable improvement and it is expected to beryllium released successful the 2nd 4th of the year.
West Cobar Metals past week produced its maiden scandium assets estimation for its Salazar captious minerals task astatine Newmont, 120km north-east of Esperance successful WA.
The company’s latest JORC-compliant inferred scandium assets estimation sits astatine 12 cardinal tonnes astatine 103ppm and it says its preliminary metallurgical testwork indicates precocious scandium leach recoveries of up to 81.2 per cent.
The Salazar task is 1 of the astir precocious clay-hosted captious minerals projects successful Australia, containing important indicated and inferred uncommon earths mineral resources, successful summation to inferred mineral resources of titanium dioxide and alumina.
Almost each scandium was produced by electrolysis until astir 1960 and astatine astir the aforesaid time, it came to beryllium utilized by the United States and Soviet Union militaries during the Cold War play due to the fact that of its lightness, precocious melting constituent and resistant properties.
Prices for 99.99 per cent axenic scandium person fluctuated betwixt US$4000 (AU$6085) per kilogram and US$20,000 (AU$30,424) a kilogram successful the past decade.
And finally, Larvotto Resources’ caller metallurgical engineering studies and testwork showed the institution could treble the archetypal throughput of its Hillgrove antimony-gold attraction works astatine Hillgrove adjacent Armidale successful NSW to much than 500,000 tonnes a year, with lone minimal upgrades and modification.
The institution says its capableness to nutrient golden ore and doré successful conjunction with antimony ore could easy beryllium accrued by expanding the crusher provender complaint from 220,000 tonnes per year. A complementary scoping survey of humanities golden and antimony accumulation besides revealed that a higher-grade golden ore could beryllium produced by incorporating a caller gravity separation module into the process stream, with the imaginable to nutrient a high-grade golden ore of much than 150 grams per tonne gold.
The imaginable betterment successful golden output contrasts sharply with humanities ore grades from anterior operations, which produced lone 50g/t gold. Management says that autarkic studies showed that adjacent with the archetypal Knelson concentrator – agelong regarded arsenic the eventual golden “catch-all” module to prime up gravity recoverable golden – successful beforehand of the flotation circuit, the archetypal Hillgrove concentrates inactive retained astir 13 per cent gravity-recoverable gold, astir of it bigger than 40 microns (0.04 mm) successful size.
Additionally, astir 44 per cent of the remaining good golden was smaller than 40 microns.
All this meant that the Knelson wasn’t catching each the golden it should have, astir surely owed to golden fineness.
Testwork besides showed further betterment successful the gravity golden betterment circuit would beryllium imaginable utilizing a multi-gravity golden separator (MGS), which is simply a much recent, little analyzable and little delicate innovation than the Knelson concentrator. Management says the MGS is susceptible of recovering much than 70 per cent of the golden from the concentrate.
Is your ASX-listed institution doing thing interesting? Contact: mattbirney@bullsnbears.com.au
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