Good Assay Report By Nickel Miners

Press, Volume CIX, Issue 32119, 15 October 1969, Page 20

Good Assay Report By Nickel Miners

(N.Z. Press Association-copyright)

MELBOURNE, October 14

Great Boulder Gold Mines and North Kalgurli (1912), Ltd, have drilled up an indicated 1.5 m tons of nickel-copper sulphide ore in the Carr Boyd rocks area in Western Australia.

In a report released today the partners said sulphide ore in the recognised shoots was assessed at one million tons, averaging 1.74 per cent nickel and 0.53 per cent copper. There was another 500,000 tons of lower grade sulphide ore averaging 0.70 per cent nickel and 0.24 per cent copper.

The directors said drilling at Carr Boyd had indicated nickel-sulphide ore mainly aceurring in “three pipelike shoots which have a genra) westerly pitch.” The highest assay at Carr Boyd in drilling to October 3 was an eight-foot intersection with 5 per cent of nickel and 1.48 per cent copper. A two-foot section in GDSB had 2.83 per cent copper and 3.7 per cent nickel. At Scotia, water problems were encountered in shaft sinking operations in the Mitchell shaft and in development at the 230-foot level. Directors said that the water flows in the shaft and in the crosscut had caused considerable delays in progress.

Development at the 230foot level had indicated an average grade of 2.61 per cent nickel and 0.20 per cent copper over the north drive

which has been extended 120 feet.

The south drive, now extended 30ft, had an indicated average grade of 3.79 per cent nickel and 0.22 per cent copper.

The average value of 2.87 per cent nickel and 0.21 per cent copper over the 150 ft of driving conformed with the expected value of 2.84 per cent nickel at this horizon.

At the 490 ft level, crosscut intersections with the main ore body had not yet been made. The surface winz was extended 21 feet to a depth of 221 ft and the grade of sulphide zone in the winz (3.05 per cent nickel and 0.23 per cent copper) conformed with the development grade at 230 feet. No Continuity Drilling in the vicinity of the hole No. SD7B (about 3000 ft south of the main orebody) failed to indicate sufficient continuity of ore to warrant continued surface drilling. The only hole of significance was SDBS where an intersection of two feet (802804 ft) averaged 5.58 per cent nickel and 0.56 per cent copper.

At location 45 (Mount Martin) driving to cover the intersections in BH6 and the first intersection in BH4 disclosed a shoot of high-grade nickel ore, with a length of 35ft and assaying 3.24 per cent nickel and 2.72 per cent arsenic over a sampled width of eight feet A rise of this shoot had been extended 45ft and averaged 3.57 per cent nickel and 3.04 per cent arsenic over a width of five feet. To date, three short shoots of nickel ore had been discovered at the 400 ft level, aggregating 117 ft length with 2.16 per cent nickel and 2.44 per cent arsenic over an average width of 6.3 per cent.

A west crosscut intersected gold mineralisation over a width of 231 ft with an average of 5.1 dwt of metal to the ton. At Fimismon 23,646 short tons of ore were milled for a return of 4686.19 fine oz of gold and 3801.07 fine oz of silver. I ' I