344 Proceedings of the Royal Society of Victoria. 



material was less ferruginous than towards the outside of the 

 area, where highly ferruginous beds and belts of linionite were 

 prominent. 



A ferruginous belt (C) extended outside of the beds above 

 described (B), and continued downwards to what would be called 

 the stem of a funnel to a depth of 150 feet from the surface. 

 Much of this ironstone was extremely hard, and Krom rollers 

 were used to crush it. Much of it was extremely rich in gold, 

 which was disseminated through the stone in microscopic par- 

 ticles, but which was occasionally visible to the unaided eye. 

 Assays of hundreds of ounces of gold per ton were obtained from 

 this class of ore. 



This secondary ore formed a zone of eiirichnient, and 

 the whole of the material from the central plug of sand- 

 stone to the rim of cellular siliceous rock was payably aiu'iferous. 

 The bulk yielded several ounces of gold per ton. and portions 

 assayed for hundreds of ounces per ton. 



Between the ferruginous zone (C) and the leached cellular 

 siliceous ore (E) there was usually a band of sand or soft bed 

 (D) from a few inches to many feet thick ; this appeared to be 

 present wherever the floor was moderately inclined, but was 

 absent where the floor of siliceous ore was steeply inclined. This 

 band of loose material was in places extremely rich in gold. 



Underlying, and almost surrounding the whole of the above 

 secondary ores, is a great mass of siliceous and kaolin ore (E), 

 representing the upper and oxidised portion of the siliceous 

 sulphide ore met with deeper in the mine. The friable silica 

 is cellular from the removal of the pyrites ; a great deal of this 

 in the mine is white, showing how thoroughly it has been leached, 

 but in places the stone was very ferruginous, and in some places a 

 little of the sulphide still remained unaltered. At the surface 

 this stone was generally stained nearly black with manganese 

 oxide. Nodules, with unaltered joyrites, were met with even at 

 the surface. Very large quantities of this ore have been mined 

 for gold at the surface and undergi-ound, but a gi-eat deal of it 

 is not sufficiently rich in gold to be profitably worked. At the 

 surface there is an extensive area to the north-west of the 

 shaft that is not mined much past the flagstaff, as its gold con- 

 tents is too low. Kaolin ore occurs extensively developed in 

 this oxidised or impoverished zone. Gold occurs in a most 



