247 
Analyses of specimens from allotments Nos. 14 B, i 6 a and i 6 b, parish 
of Loyola, as marked on plan— 
Percentage Composition — 
No. 308. 
No. 309. 
No. 313. 
No. 314. 
No. 306. 
Insoluble matter 
55-43 
39-85 
66 "6 
47-27 
48-3 
Phosphoric anlrydride (P 2 0 5 ) ... 
Alumina (A1 2 0 3 ) and iron per- 
15-12 
19-93 
10-90 
15-30 
16-3 
oxide (Fe 0 d ;l ) 
11-94 
22-61 
11-68 
22-70 
26-7 
(Fe 2 0 3 ) 
(4-64) 
(3-14) 
. . . 
. . . 
... 
Lime (CaO) ... 
5-12 
1-16 
1-3 
Nil 
Magnesia (MgO) 
Nil 
Nil 
Trace 
0-97 
Water (H 2 0) at 100° C. ) 
Water (ignition) ... J 
Not ascertained. 
Orthophosphoric acid (H 3 P0 4 ) 
calculated from P 2 0 5 
20-89 
27-53 
15-05 
21-09 
22-0 
Economic Aspect. 
I have traced several of the phosphatic beds, as shown on the sketch 
plan, but the work was rendered somewhat difficult as, surface soil covers most 
of the hill, and few outcrops, except of cherts, can be seen. However, by 
trenching across the strata more phosphatic beds may be exposed. In 
allotment 14 B, parish of Loyola, the various phosphatic beds extend for 
about 20 chains, 6 chains, 10 chains and 10 chains in length, and average 
about 1 foot in thickness. Approximately, I find that 30 cubic feet are 
equivalent to one ton, so by rough calculation there would be probably 
10,000 tons to a depth, say, of 100 feet, if the beds continue downwards, 
as the geological evidence indicates. 
In allotments i 6 a and i 6 b, the beds are smaller, and as I have at present 
traced) them, they extend for lengths of about 10 chains, 10 chains, and 5 
chains, with a thickness of 1 foot in parts, but on the average only 6 inches 
to 7 inches. Here we may say an additional 3,000 tons could be mined to 
a depth of 100 feet. These beds are about 300 feet higher in altitude than 
those in allotment 14 B. They are 2J miles from the Mansfield railway 
station, and the facilities for mining and transport are excellent. 
[Report sent in 6th September , 1904 .] 
BRIEF REPORT ON THE MINING FEATURES OF THE 
HODDLE’S CREEK DISTRICT, WITH PLAN 
(PLATE XXVIII.). 
By 0. A. L. Whitelaw. 
The following report is made on a preliminarv inspection of the mining 
features of the Hoddle’s Creek district: — 
Hoddle’s Creek is a southerly affluent of the Yarra River, joining that 
stream near Launching Place Railway Station, which is 41 miles E. of 
Melbourne. This stream and most of its branches have been worked for 
alluvial gold since the early days of mining in Victoria. The lead of gold 
has apparently extended from the Yarra River to the sources of the various 
tributary streams, and been of fair value. Councillor H. Ewart, who 
accompanied me during my examination, informed me that he has been 
connected with, or personally worked, several portions of the lead, and 
that some of the claims were very good. Certainly a considerable area 
of ground has been turned over, which may, however, be partly due to the 
fact of its proximity to the metropolis. 
