Legend Mining (ASX: LEG) has shared aircore assay and petrology results from the first three drill holes at its Rockford project in Western Australia’s Fraser Range, achieving up to 0.46% nickel, 1.44% copper and 0.04% cobalt.
The better results were from drill hole RKAC183 which intersected 14m of mineralisation grading 0.37% nickel, 0.43% copper and 0.03% cobalt from 72m. The drill hole included a 2m higher grade interval containing 0.46% nickel, 1.44% copper and 0.04% cobalt from 77m.
The other two holes Legend reported on today were absent of sulphides.
However, commenting on RKAC183, Legend managing director Mark Wilson said the results were a “watershed moment” for the company, its Rockford project, and the Fraser Range in general.
In addition to nickel, copper and cobalt, drill hole RKAC183 returned up to 10.16% manganese, 32.57% iron and 7.64ppm silver.
According to Legend, the results were significant because they confirmed the “presence of a nickel-copper sulphide-bearing mafic/ultramafic intrusive body”.
The company also flagged that its host rock was of the type found at Independence Group’s (ASX: IGO) Nova nickel-copper-cobalt mine, 160 kilometres from Norseman in the Fraser Range, which opened last September and has a 10-year mine life.
Prior to the Easter break, Legend had drilled 18-holes and 1326m at Area D of its Rockford project.
Around 200m of the campaign was infill drilling adjacent to holes RKAC151 and RKAC167 that returned nickel, copper and cobalt mineralisation in November last year.
RKAC183, which was reported today, was drilled 200m north of RKAC151, while the other two holes, RKAC181 and RKAC182, were drilled 200m west and east.
Neither RKAC181 and RKAC182, nor another hole 200m south of RKAC151, RKAC186, were prospective for sulphides, although they intersected olivine gabbronorite in the bottom of the holes.
Improvement on November
Mr Wilson said the most recent results was an improvement on the those achieved in November.
“The tenor of the nickel, copper and cobalt assays along with the presence of sulphides, make this hole appreciably better than RKAC151, 200m to the south,” he said.
“This is potentially the most significant published result since the Nova discovery hole in the Fraser Range.”
The company said the disseminated sulphides it found in RKAC183 were from the same cumulate-textured olivine gabbronorite host rock observed in the bottom of RKAC151.
November drill results
Legend’s RKAC151 hole had returned a wide 47m intersection grading 0.30% nickel, 0.11% copper and 0.03% copper from 64m last November.
The company said its latest hole confirmed the 47m nickel-copper-cobalt intersection associated with iron-rich clays in RKAC151 was “directly related to weathered sulphides within a gabbronorite intrusive”.
The company says its RKAC167 hole, also drilled in November, had identified weathered sulphide to support anomalous nickel-copper assays.
“The weathered sulphide supported by the anomalous nickel and copper assays in RKAC167 support Legend’s belief that the greater Area D has the potential of containing a number of mineralised intrusions, akin to the Thompson belt in Canada,” Mr Wilson said today.
More to come
Results from the other 15 holes are pending, after assay samples were submitted for analysis.
Legend’s securities were up 20.8% by late afternoon to A$0.029 on the ASX.