ORES AND VEIN MATERIALS. 



599 



REMARKS ON TABLE VII. 



In connection with the serpentine of Analysis I, it was found by treatment of 

 the powdered rock with very dilute hydrochloric acid that the carbon dioxide was 

 combined entirely with lime. That the rock is a true serpentine appears from a cal- 

 culation of the oxygen ratios: 



Analysis II, after deducting calcium carbonate, shows the residue to have a com- 

 position approximating to that of serpentine. 



The mineral of which III is the analysis was obtained in an apparently pure state 

 by treatment with dilute hydrochloric acid, whereby 16 per cent, of the whole went 

 into solution and was found to consist chiefly of calcium carbonate, with a little mag- 

 nesia, ferrous oxide, and phosphorus pentoxide. 



ORES AND VEIN MATERIALS. 

 TABLE VIII. Sand carbonates. 



1 Sand Carbonate, On- Coll. No. 36, Adelaide mine, North Iron Hill, 

 n. Sand Carbonate, Ore Coll. No. 33, Little Chief n-ine, Fryer Hill. 

 TTT Sand Carbonate, Waterloo mine, Carbonate Hill. 



