31 
There is every reason to expect that this discovery will result in more 
attention being paid to this tract of country, which is likely, if opened up, to 
become a contributor to the gold yield. There are parallel lines of reef to the 
east and west, and the alienation of this mineral land should not be allowed. 
It is at. present held in 20-acre blocks. 
[4.7.10.] 
THE MATRIX REEF, McINTYRE’S, NEAR RHEOLA. 
ByH. S. Whitelaw, Field Geologist. 
The Matrix reef is situated at the head of No. 1 gully in the McIntyre 
Ranges, about 3 miles south of Rheola. 
Between the time of the discovery of the reef in 1867 by McEvoy and its 
acquisition by the present holders, the Matrix Reef syndicate is said to have won 
over £20,000 wmrth of gold. Besides this amount heavy deposits of specimen 
gold were found in No. 1, No. 2, and No. 3 gullies, all of which head from the 
reef, leaving no doubt as to the source of the gold supply. The finding on 
the east slope to No. 1 gully of nuggets weighing 810 oz., 805 oz., and 782 oz. 
is recorded. Above where these were found much work in the way of shallow 
shaft sinking and open cutting has-been done on quartz veins, and several 
patches of extreme richness are said to have been discovered. Unfortunately 
these workings are now r inaccessible, and consequently it is not possible to 
give a reliable detailed account of the modes of occurrence of the veins worked. 
However, some sections have been exposed in the workings of the Matrix Reef 
syndicate from which the position of a rich vein in relation to the associated 
Fig. 13.—Section along Tunnel of Matrix Reef Syndicate. Scale, 80 feet to 1 inch. 
rocks can be determined. It would appear from these that the greater portion 
of the work has been ’done on quartz veins occurring in and about a synclinal 
Fig. 14.—Ideal Section showing Position of Workings in relation to the Syncline. 
Not to Scale. 
fold, the axis of which strikes N. 15° W. This fold has been fractured by 
faults, and judging from the position and description given me by the manager 
