65 



powder, of a liglit pinkish colour, liaviug a greasy feel between 



99-28 

 I have now to record a few minerals which have lately come 

 under my notice, and which I believe have not hitherto been 

 recognised as occurring in South Australia. 



Apatite. 

 This mineral occurs at the Wallaroo Mine, where it was 

 mistaken for fluorite, and I have also met with it amongst the 

 copper ore from the Kurilla Mine. A specimen obtained from 

 the Wallaroo Mine about one inch diameter was of the charac- 

 teristic sea-green colour, and exhibited the planes of the 

 hexagonal prism ; the greater portion of the pyramidal planes 

 were, however, destroyed. Specimens from the Kurilla Mine 

 were in the form of isolated crystals embedded in yellow^ 

 copper ore ; the crystals Avere of a greenish-grey colour, 

 exhibiting the planes of the hexagonal prism and pyramid, 

 together with the terminal plane of the former. These crystals 

 were about a quarter of an inch long. The chemical, blowpipe, 

 and physical characters were those characteristic of the mineral 

 apatite. 



EUTILE, OXTDE OF TiTAXIU:M. 



This mineral occurs in fair-sized crystals at the following 

 localities : — Lyndoch, CoUingrove, Tanunda Creek, and Mount 

 Crawford. The specimens examined from Mount Crawford, 

 Lyndoch, and CoUingrove were in the form of well-defined 

 crystals. The mineral obtained from Tanunda Creek is in the 

 form of small more or less rounded fragments in a quartz sand, 

 and was obtained from the side of the creek. I am indebted 

 to Messrs. Warren, Marshall, and Tepper for specimens of the 

 above-mentioned mineral. 



A double sulphide of antimony and nickel. Specimens of 

 this mineral have been received from the interior of the colony. 



