79 



tlie volcanic lavas of Mount Gambler. The variety JSyalosiderite 

 is also mentioned by Woods as occurring in tbe basalt of 

 Mount Schank. 



GrAENET. 



Eed crystals of tbis mineral in wbite talc are to be found at 

 Kanmantoo. Black garnet occurs at Bundaleer ; and garnet- 

 rock — i.e., garnet forming a more or less compact rocky mass — 

 occurs at Monarto. Crystals of iron-garnet occur in the granite 

 rocks at Yadmana in the Hundred of Hawker. Burr mentions 

 the following localities : — Ked garnet, Belvidere Hange and in 

 the neighbourhood of Mount Barker ; black garnet, about 20 

 miles north-east of Adelaide ; and cinnamon stone, Belvidere 

 Range. 



Epidote. 



The two following localities are named for the occurrence of 

 this mineral : — Barossa Bange (Burr) and the Yudanamutana 

 Mine (Ulrich). 



BiOTiTE (Mica.) 



This mineral is of frequent occurrence in the copper mines 

 of Yorke Peninsula, the most characteristic specimen being 

 obtainable at the Telta Mine, uear Moonta. 



The following is the result of an analysis of a specimen ob- 

 tained from the Yelta Mine : — 



9912 



The specific gravity of this specimen was 2-9. The colour was 

 a dark greenish-black ; that of thin laminae brownish-green. 



The occurrence of this species is reported at AYilliamstown 

 by Selwyn. 



Muscovite {Common Mica). 



This species forms a common constituent of our granite 

 rocks. The following localities may be more especially noted: 

 — Mount Pleasant, AYilliamstown, Barossa Eanges and 

 31ount Crawford. Tate reports its occurrence in large trans- 



