THE HAURAKI COLDFIELD.

New Zealand Herald, Volume LXVIII, Issue 20766, 8 January 1931, Page 12

THE HAURAKI COLDFIELD.

Sir,—ln answer to"M. Inst., M.M. (London)," it gives me great pleasure to deal with the questions raised by him. (1) The dimensions of the ore body alluded to as containing 50 millon tons of pay ore and regarded by your correspondent as eclipsing any similar known deposit in the world, are as follows:—Average width. 90ft.; length of ore shute, 11,880 ft.; tested vertically by cuts every 80ft., total 750 ft. ; average specific gravity, 3.3; 11 cnl>io feet of ore per ton; tonnage, 72.900.000. all above sea level and a large tonnage can be mined by open cut. It is feasible to expect to find a similar tonnage below sea level, and it is proposed to diamond drill to find out. The average value of the ore per ton is: Bullion., 15s; copper, 16s; zinc, 365; lead, 30s. Total, 975. (2) The estimated cost per ton of ore for extracting and- marketing the metals is 35s gross. (3) The present market value of the metallic content recoverable from the ore is over 80s per ton. (4) The name of the ore body is Mount Tokatea, This rfef is readily traced for a distance of over 20 miles and in no place is it barren. For the information of "M. Inst., M.M. (London)" I beg to say that a company has been incorporated with the object of developing , and working the deposit referred to on a large scale and, at an early date propose to supply a complete statement dealing in detail" with the company's proposals. Finally, in the examination carried out by me every phase governing the metallic deposits of the Hauraki goldfields was taken into consideration and. due to certain knowledge gained. I was able to discover this huge deposit. I may state that I have something to report that will greatly interest geologists and metallurgists and have a bearing on the future of cur goldfields. Modern Miking-