76 



both cases. Burr alludes to its occurrence in the form of 

 cubical crystals at the Kapunda Mine. 



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 in diameter) was of the 

 characteristic 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 were 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 are those of the mineral apatite. 



Magnesite 

 Occurs in the Flinders Eange near Port Pirie, in more or less 

 weathered masses. It is also found scattered about in medium- 

 sized reniform masses on hills of crystalline limestone in the 

 northern part of the Hundred of Cunningham, and it occurs in 

 a large vein on the banks of the Oolabidnie Creek, Hundred of 

 Playford, and in botryoidal masses at Blinman. Burr mentions 

 carbonate of magnesia as occurring in the Mount Lofty and 

 Barossa Eanges. 



SILICA. 

 Quartz. 



Moch crystal occurs in various parts of the colony, among 

 which the following may be named : — The mining district of 

 Torke Peninsula (at the "Wallaroo Mine crystals with two 

 perfect terminal pyramids arc obtainable), Angastou, Green's 

 Plains, Stanley Mine, Highbury, Barossa Range, Emu Flat 

 near Clare, Lyndoch Valley and Coonatto, while rolled 

 pebbles, frequently mistaken for rolled topaz, are common in 

 several localities in Central Australia — notably near Lake 

 Hope and Charlotte "Waters. Tate states this variety occurs 

 at Williamstown, Morialta, Tanunda Creek and Pekina. Burr 

 also reports the following localities for this variety : — En- 

 counter Bay, Montacute Mine, Elaxman Valley, Mount 

 Barker, and the Belvidere Eange. 



Amethystine quartz occurs at the "Wallaroo Mine, and in 

 small veins on the beach north of Point Eiley, Yorke 

 Peninsula. 



JRose quartz occurs in the Hundred of Cunningham, and Burr 

 mentions its occurrence near the Montacute Mine. 



