646 J. T. Jutsoii: 



The Caledonia Mine (the actual name of the Company was 

 the Caledonia Gold Mines) is situated towards the northern 

 end of the Caledonia Syncline near the Yarra. It was formerly 

 known as the Newhaven. The mine was w'orked from 1905 to 

 1909. According to the Annual Report of the Mines Depart- 

 ment for 1909, the mine yielded 12,772 ozs. from 12,653 tons, 

 the called-up capital was £8250, and the total dividends 

 amounted to £12,583 15s. These figures determine the average 

 per ton at 1 oz. and 4 grs., and the total value of the gold ob- 

 tained at £51,088. Most of this gold was obtained between the 

 surface and 300 feet. The shaft w^as sunk to 600 feet, but the 

 stone did not prove payable, and the mine was shut down. 

 The Caledonia yields are the one really bright feature of the 

 Warrandyte goldfield. 



The two dykes to the east of the township were discovered 

 in 1877. The eastern one has been little worked. The rock 

 has been decomposed to a clay, which is intersected with thin, 

 irregular quartz veins, and contains pseudomorphs of iron oxide 

 after pyrites. The whole of the material went to the battery. 

 These dykes have been worked to a depth of 200 feet. They 

 were worked continuously by variousi parties from 1877 to 1886. 

 They were then discontinued until 1893, when a little work was 

 done, and the same occurred again in 1898 and 1909, appar- 

 ently without payable results. They have therefore practically 

 not been worked since 1886. From 1877 to 1886, 22,114^ tons 

 were crushed, yielding 1762 ozs. 6 dwt. 22 grs., giving an aver- 

 age per ton of 1 dwt. 14 grs., and a total value of £6959 18s. 

 The total yield to 1909 is in round numbers valued at £7000. 

 Considering the length of the period during which these dykes 

 w^ere worked, the inference is that the yield was sufficient to be 

 payable. From the detailed figures, the dykes show a decrease 

 in value at depth. 



Some isolated yields from the quartz reefs of the field gene- 

 rally may be quoted : — 



