1126 E. 0. Teale: 



Economic Minerals. — The following minerals are known to occur 

 in the rocks of this region : — 



1. Gold. 



2. Copper Pyrites. 



3. Argentiferous Galena. 



4. Iron minerals (Hematite and/ Limonite). 



5. Manganese Minerals (Pyrolusite, etc.) 



6. Barytes. 



Most of the mining has been done in connection with gold. With 

 most of the others only a few shallow excavations, with an occasional 

 shaft have been opened up. Very little can be said with regard 

 either to their geological occurrence or economic possibilities, for 

 the reason that most of the shafts are inaccessible, and in other cases 

 the opening up has been far too limited to enable any reliable 

 opinion tO' be formed. 



The position of these occurrences is shown on the map. Hematite 

 would appear to be chiefly if not entirely restricted to the '* Snowy 

 River Porphyries." Two forms have been noted, a micaceous 

 variety, widely distributed in the southern portions, and a mas- 

 :sive hematite. The largest outcrop of this nature was at locality 

 Fe 20, about six and a quarter miles north from Nowa Nowa. 



Analyses of some of these ores are given in some of the Annual 

 Reports of the Mines Department, some of them indicating ore of 

 good quality, but insufficient work appears to have been done to 

 determine even approximately the quantity of ore available. The 

 same observation holds with regard to the manganese ores. These 

 occur at the northern end of this region (Loc. M, Specimen 104), 

 and are at the junction of the porphyry, with the overlying lime- 

 stone series, and from the material exposed in the dump it would 

 appear that they occur in the calcareous and ferruginous shales 

 associated with that series. 



Barytes is Avidely distributed in the porphyry, and is very com- 

 mon in the hills close to Beechers, Canni Creek, where there are a 

 few shallow excavations. Most of it is iron-stained, but some good 

 white material can be seen at Ba 11. (Specimens 13 and 74.) A 

 small open cut here shows an irregular occurrence of Barite in 

 thin veins and small masses replacing the decomposed porphyry. 



Argentiferous galena occurs both in the limestone series and in 

 -the porphyry. Some prospecting work was in progress at the 

 '" Tara Crown,'' during the time of my visit, where there appeared 

 to be a well-defined fissure lode traversing decomposed felsitic rocks 

 :in a N.N.E. direction. 





