66 
Jacoletti's. 
This is situated about 20 miles to the Southward of Blackbome’s, and about 
five North of Parker's Range. Here several areas were taken up, as some very 
rich surface specimens were discovered at the cap of a reef. 
Parker's Range. 
There is another rich reef, about 15 miles South of Jacoletti’s, on a small range 
of schistose rocks to the Western side of a large salt swamp or clay-pan. There are 
several lines of reef, but most of the claims have been taken up on one which runs 
in a North and South direction, dipping to the West. 
These reefs contain more pyrites than those at the Southern Cross, but this is 
only seen below the water level, for near the surface it is decomposed, thus 
liberating the gold, which stores freely in the stone. 
About five miles South there are another series of reefs, which are as a rule 
small but well defined, carrying rich shoots or patches of gold. 
The whole Yilgarn field seems to follow one anticlinal fold in the country, the 
centre of which is exposed at Golden Valley, where the reefs dip both East and 
West, where the country is hard and the stone carries much copper. Hope’s Hill 
and Southern Cross are on the Western side of this fold, whilst Blackbome’s is 
on the other side of a synclinal still further West, where the reefs dip to 
the East. All along this line of country the stone is highly mineralised, contain¬ 
ing carbonate of iron and chlorite. 
At Parker’s Range the reef again dips West in pretty firm country, the stone 
containing a great deal of iron pyrites (mundic), which will carry the gold in 
depth. 
Taken as a whole, the fields have lately made great strides towards develop¬ 
ment. Up to the present nearly all the reefs tested have proved good, and pro¬ 
mise a bright future for the Yilgarn Goldfield. 
The great drawback to the rapid development of the field has, up to the 
present, been the scarcity of fresh water; but this want has now been, in a great- 
measure, overcome (an extensive series of tanks having been sunk by the Govern¬ 
ment), and also by the provision of a public condenser; not to mention that every 
mine on which machinery has been erected is in a position to supply itself by 
means of its own condenser, an apparently unlimited supply of salt water having 
in almost every instance been encountered at no very great depth from the 
surface. 
Between Southern Cross and Gnarlbine, with the exception of a small belt of 
Metamorpliic country 25 miles to the Eastward, all rock outcrops are granite. 
Immediately to the Eastward of Gnarlbine there is another small belt of auriferous 
country, on the Eastward side of which the granite again outcrops and extends as 
far as Coolgardie. 
CoOLGARDIE. 
At Coolgardie a rich patch of alluvial ground was discovered in the year 1892, 
which, since then, has been turned over several times. Up to the present no deep 
ground has been discovered, a good deal of the gold being found on the surface, as 
on the Murchison. Several auriferous reefs have been found, but the gold in the 
alluvium has been apparently mostly derived from rich leaders. On this field the 
most sensational discovery is a reef found by a man named Bay ley, and from his 
Reward Claim a great quantity of gold has l>een taken. This reef consists of a 
small blow running in a North-Westerly direction and underlying to the North- 
Eastward, striking across the line of the country, which here runs nearly North 
and South. This reef is about nine feet in width at its largest part, but it pinches 
