4 Proceedings of the Royal Society of Victoria. 



Adverting, however, to the occurrences of gold, that at Mount 

 Elmo will now be considered. The rocks amongst which it is 

 found are quartzites with mica and andalusite schists, and these 

 are associated with holocrystalline rocks, some of which are 

 undoubted metamorphosed, whilst there are others about which 

 some reserve must be made, but which will probaV)ly prove also 

 to be of metamorphic character, and which appear to have been 

 intrusions that already existed in the area prior to the period at 

 which the change from shales to schists took place. 



Mount Elmo lies about three miles south east by east of the 

 trigonometrical survey station of Mount Towanga, and the field 

 is reached from Eskdale by one of the new roads of the Mines 

 Department following the western or main branch of the Little 

 Snowy Creek. The mines are upon several lines of reef, a 

 considerable distance apart, two of which are at Mount Elmo, 

 where they dip with and follow the ancient bedding planes of the 

 country. The dip is 65 degrees east and the strike is about 10 

 degrees west of true north. The reefs at Mount Elmo have not 

 yet been traced for a distance of more than about \^ miles, and 

 are, as far as prospected, cut off completely by the bands or masses 

 of the holocrystalline rocks just mentioned. The author was not 

 able to visit the mass at the southern end of the line of reef, but 

 at the northern end, lying between the Little Snowy Creek and 

 the mountain spur containing the reef outcrops themselves, the 

 band is variable in character. One mass that he saw was a tour- 

 maline rock with felspars and muscovite, whilst another showed 

 upon slicing, felspar, muscovite and biotite, some quartz exhibit- 

 ing much strain structure and containing small fibrous inclusions, 

 probably sillimanite, light brown hornblende and tremolite. 



The top of the mountain, somewhat to the eastward of the line 

 of reef, is of greisen, a mass of which appears to lie parallel to the 

 schists, but there was not an opportunity to trace out its extent. 



The part of the mountain where the more westerly of the two 

 reefs is exposed is an andalustic and mica schist, the andalusite , 

 crystals showing up very well upon the weathered surfaces on the 

 mountain side. The reef lies between a. dense impervious bed of 

 black quartzite and a bed of andalusite schist of a few feet 

 thickness, on the other side of which a second bed of the black 

 impervious quartzite is found. These black quartzites are 



