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a hydraulic plant are laid down the hill, but were not in use. 'I he material 
to be dealt with consists of angular and sub-angular creek wash of recent 
age and from 5 to 10 feet in depth. The bottom is decomposed granitic 
rock with much silvery mica. This ground could probably be worked more 
profitably by a co-operative party with a small pump. The tin ore found 
here is remarkably well rounded and of brown colour. It is of good 
quality and of small grain. 
At Burrowye Creek, about 5 miles north-east from Koetong, two men 
are working for tin ore. Formerly a considerable quantity of tin ore was 
found on this creek. Altogether there is a wide belt of stanniferous 
country at Koetong, and there should be room for prospectors in this 
district. 
A little gold occurs with the tin ore in this tract, but not in sufficient 
quantities to pay for extraction. 
From Koetong to< Berringama the country is granitic rock. Slate and 
sandstone country begin about half-a-mile east of Berringama. About 
8 miles east of Koetong the road passes over the highest point, about 
2,600 feet above sea-level. Berringama is about 1,400 feet above sea- 
level. 
At Burrowye (Mrs. Shelley’s) the creek has been worked for about 
2 miles along its course for stream tin. At the head of Boundary Creek, 
Berringama, a hydraulic plant was erected but was not a success. 
Mount Cudgewa.* 
Mount Cudgewa is about 12 miles southward from Berringama and 
lises about 3,650 feet above sea-level. The Cudgewa Creek rises here and 
flows down past Mr. Mildren’s place, and has been worked along most of 
its course for tin ore. Very rich returns are said to have been obtained 
along the bed and banks of the creek, richer than anywhere else in the 
State. 
The country rock is generally granitic along the course of the creek, 
and on the top of Mount Cudgewa the rock is grano-dkxrite. It is in the 
grano-diorite and in the metamorphic rocks resting upon it that the tin ore 
is met with in quartz lodes. The northern slope of the mountain near the 
hut is thickly strewn with vein quartz, some of which has much black 
tourmaline present and in other cases silvery mica occurs in tufts; grains 
and pieces of tin ore up to an inch across are found in some of these loose 
fragments. The quartz veins have been opened up right on the ridge, and 
the vein-stone found in the shallow holes is well studded with tin ore. 
The quartz veins where opened up are from 2 inches to 4 feet in thick¬ 
ness, but most of them do not appear to be more than 1 foot thick, and 
the splashes of tin ore occur most irregularly. The lodes are in some 
cases fairly persistent and may be traced for a few chains in length. 
They generally appear to strike more or less east and west and dip to the 
north. The veins do not fill fissures but have formed by segregation from 
* See Professor Gregory.—The Mt. Cudgewa Tin-field, Bull. Geol. Surv. Viet., No. 22, 1907. 
