Brightstar defines high-grade gold extensions at | Australian Markets
Brightstar Resources’ assays from a additional 5300 metres exploration drilling program at its Sandstone gold project within the Western Australian Goldfields embody robust gold intercepts up to 6m at 6 grams per tonne (g/t) gold from 250m. The hits are beneath the company’s Lord Nelson open pit.
That 6g/t gold intercept consists of 1m going 24g/t gold from 250m and follows a separate good-looking 20m run at 1.98g/t gold from 212m, which incorporates 10m assaying 3.07g/t gold from 220m.
Another interval in the identical gap gave up 11m assaying 1.49g/t from 235m.
The present Lord Nelson program of 25 reverse circulation drill holes for about 3800m follows Brightstar’s earlier 14-hole, 3700m program which reported outcomes a month in the past. That program confirmed high-grade gold continues at depth within the company’s $2500 per ounce optimised pit design.
The Lord Nelson deposit hosts a complete useful resource of 5.6 million tonnes at 1.6g/t gold for 291,000 ounces of gold.
The object of the latest program was to infill drilled mineralisation within the present Lord Nelson conceptual pit shell, optimised at a gold price of $2500 per ounce, and construct the required gap density to assist an indicated useful resource class.
In addition to the primary hits, the Lord Nelson drilling program additionally intercepted 32m-long runs in two separate holes. The best of the pair yielded 32m assaying 3.44g/t gold from 200m, together with 17m operating 5.44g/t gold from 215m.
The different gap gave up 32m going 1.22g/t gold from 104m, together with 2m at a useful 5.80g/t gold from 106m.
The higher hits from Lord Nelson proceed with three different intercepts ranging between 10m, 18m and 28m, which have major grades starting from 2.5g/t to 2.96g/t.
Two secondary hits had been 1m at 13.9g/t gold and 2m going 5.79g/t gold within the 18m and 10m major intercepts, respectively.
The outcomes reinforce the presence of persistent gold within the Lord Nelson system beneath and west of the previous pit ground and ensure that high-grade gold stays open to depth.
The assay outcomes from the continued drilling program at the Sandstone hub proceed to be vastly optimistic. At Lord Nelson, some of the widest, highest-grade intercepts at the deposit have been produced from the bottom of optimised pit shells, which bodes nicely for potential future open pit mining operations.
Other outcomes past the Lord Nelson work embody analyses of latest samples from a small, six-hole, 728m drill program at the Havilah Camp, 2500m southwest of Lord Nelson. Havilah is on the other flanks of the ultramafic-granodiorite contact, which possible controls mineralisation at each places.
Havilah has a present complete useful resource of 1.2Mt at 1.3g/t gold for 54,000 ounces. The company’s modest drilling program focused the down-plunge extension of mineralisation of the Havilah and the Maninga Marley deposits and adopted up on previous drilling that reported anomalous gold.
One gap, nearly 200m west of the previous Havilah principal shaft, intercepted gold at about the identical depth because the lowest mine degree, with an intriguing 3m assaying 11.4g/t gold from 129m, together with 1m going 29.5g/t gold from 252m.
That end result appears to verify that emphatic gold grades persist to depth and stay open down-plunge to the northwest of the historic Havilah workings. A earlier intercept that gave up 4m at 4.56g/t gold additionally supplied the identical hints.
Rovira stated the identification of high-grade mineralisation at Havilah might signify new shoots which can be untested by deeper drilling, which is an thrilling prospect.
The latest outcomes additionally embody vital numbers from the Bull Oak deposit, which has a present useful resource of 2.5Mt at 1.1g/t gold for 90,000 ounces.
As with Lord Nelson and Havilah, Brightstar’s latest drilling program probed for potential extensions of the deposit beneath the present mineral useful resource.
Bull Oak’s mineralisation contains a number of high-grade quartz reefs within a lower-grade halo surrounding a small native elongated granodioritic intrusive, which measures about 500m and up to 150m broad.
Some of the quartz veining radiates past the intrusive into the enclosing mafic wall rocks and high-grade gold may be encountered at contacts with banded iron formations.
Results from drilling at Bull Oak embody 2m at 8.93g/t gold from 112m, together with 1m assaying 13.7g/t gold from 112m, included within a broader, unconstrained intercept of 167m operating 0.59g/t gold from 11m.
A second gap intercepted 19m operating 1.18g/t gold from 177m, together with 1m going 10.1g/t gold from 192m, enclosed within a broader, unconstrained 106m intercept averaging 0.6g/t gold from 134m.
Some felsic intrusives at Bull Oak haven’t been examined by drilling and Brightstar says it’s working up exploration packages to incorporate geophysics and drilling to check these targets. The work is a component of the company’s effort to proceed developing its useful resource base at the Sandstone hub.
The company can be piecing collectively the geology and controls on mineralisation at the Bull Oak deposit at Sandstone, which has produced vital high grades from a small program within broad zones of low-grade mineralised granodiorite.
Brightstar says it’s urgent on with its totally funded drilling program for the yr of more than 130,000m. A reverse circulation rig is drilling at the Indomitable Camp within the Sandstone hub.
In work past Sandstone, Brightstar is awaiting the outcomes of a second reverse circulation program it accomplished in April for about 6000m at its Yunndaga deposit in Menzies hub.
The company can be ready on analytical outcomes from not too long ago accomplished drilling from its Cork Tree Well extensional and infill drilling program, within its Laverton hub, and from the Yunndaga infill drilling program at Menzies.
The Laverton hub is a key space for Brightstar. The hub hosts a gold processing plant that’s within 75km of all of the deposits within the hub environs.
Brightstar is on a severe roll with its drilling metreage output and it appears sure work will sew collectively vital discoveries in extensions and new zones because it advances.
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