36 T. S. Hart : The Aline ralogical Characters 



and other places, and it need not he for this reason separated 

 from the first type. 



Manganese oxides are sometimes abundant in the outcrops of 

 quartz reefs. A source of this manganese is not always evident. 

 In some cases, as at Linton, it may be derived from wolfram. 

 Sphalerite may also contribute to it. One analysis of psilomel- 

 ane from Maldon showed nearly 3 per cent, cobalt oxide. Rho- 

 dochrosite is recorded from Clunes(l). A pink mineral in a 

 very thin layer or film is sometimes found at Ballarat, but 

 examination showed neither manganese nor cobalt. 



I have in my possession a sample of zinc from Bamganie, said 

 to have been obtained in workings in the 80ft. level of one of the 

 mines. There was nothing in the circumstances under which I 

 obtained it to suggest any doubt as to its genuineness. 



I have attempted this classification of the auriferous deposits 

 with a view to arranging the more important pai-ts of our present 

 information, and to suggest a basis for more complete and more 

 systematic observations in the future. Where old records are 

 quoted without any explicit reference they are contained in 

 Atkinson's List of Victorian Minerals (3), and in Walcott's 

 Additions (4). These papers have greatly facilitated the work 

 of this classification. 



REFERENCES. 



1. Notes on the Physical Geography, Geology and Mineralogy 



of Victoria. Exhibition Essays, Melbourne, 1867. (The 

 mineralogical part is by Ulrich). 



2. Contributions to the Mineralogy of Victoria, by G. H. F. 



L'lrich. Melbourne, 1870. 



3. A Locality List of all the Minerals hitherto lecorded from 



Victoria, by J. A. A-tkinson. Proc. Roy. Soc. Victoria, 

 vol. ix., new series. 



4. Additions and Corrections to the Census of Victorian 



Minerals, by R. H. Walcott, F.G.S. Proc. Roy. Soc. Vic- 

 toria, vol. xiii., new series, pt. 2. 



5. An Introduction to the Study of Mineralogy, by Ferd. M, 



Krause, F.G.S. Melbourne, 1896, 



