TIN AND COPPER ORE;

Grey River Argus, Volume XII, Issue 1285, 11 September 1872, Page 2

TIN AND COPPER ORE;

The following information furnished to the Sydiiey Morning Jferald, by a correspondent—respecting the geological formations in which tin and copper are likely to be discovered, maybe useful to those intending toi prospect for them on the West Coast.— Copper lies in lodes encased with slates, and sometimes with, granite, They run, north and south, and are mixed with undeveloped quartz. The layers are of different' colors. Where green subr stances are met with the better is the lode, for grey ore is not so reliable as the green, though it produces good copper in patches. .Yellow ores .are of no great thickness, but the layers underneath are of -the richest kind. Copper lodes dip into the earth, and are of no great thickness on the north and south ends. From where the surface lode co:nme.nceß— tfia,fc isj where the b>w is the highest-^o'w of . a purple color- underlies to the east slightly, and the bottom lodes are best when purple mixtures of earth are plentiful. When the lode is found io lie betreen walls of granite, and the ore is greett^with dark blue streaks, then it is rich, in" mineral, and runs rich of great width and breadth. , Tin ore will be found in aljinstances in the greatest granite formations of the Australian colonies ; and the best tin ore will be found iv shallower sinkings and the bottom will' be s granite. If in flats, it will be found on the south-west side, or west in mostly all instances. If found in ridges, the derjostts'^'will be heavier, and on. the side of/the hills which face the rising sun. If found in creeks, the ore will be very patchy and unreliable. When reefs of tin ore are encased with thin walls they will be J! very numerous, and of no great thickness, and wiU be on the east side of the drift tin in the hills, generally on their slopes, running north and smith. When found, it will be at no great distance from the top surface, and the reefs will thicken as they go down into a lode. If the surface tin is of ;a rich description, then the blows or lode will contain rich tin- ore. The lode will not . extend ; to any i great distance along the surface line of the reefs, will run into the earth narrow, and widen out its it <\gain descends into tl^e depths of the earth.