MINERALS OF SOUTH AUSTRALIA. 227 
auriferous quartz veins (Tate). Analysis of a specimen 
from Hindmarsh Valley, by Wallace, of Glasgow :— 
Ferric oxide o.:, VO =tbron, sol 72 
Magnanic oxide .. trace 
Magnesia ee ol) 
Lime ... eae ea ered 
Phosphoric acid .... 1:20 
Sulphuric acid ... 0°42 
Alumina ee, owe 
Bealices pects Peek vere! 
Water (combined) 10°91 
Moisture Joos Sees 
100-00 
Limonite pseudomorphs after pyrite, occur in the 
form of isolated and grouped cubical crystals in 
various parts of Central Australia, and near Lake 
Eyre it is very plentiful on the surface. It is also 
found in cubes at Mount Margaret and Blinman 
(T.C.C.); cubes also occur on the surface 8 miles 
north of the Peake, under Mount Kingston, Central 
Australia (Tate); also near Yunta Station (T.C.C.). 
MaenesitE!!—Flinders Range, near Port Pirie, more or less 
weathered masses (‘I C.C.); northern part of the 
Hundred of Cunningham, scattered about in medium- 
sized masses on hills of crystalline lime-stone (T. C. C.) ; 
banks of Oolabidnie Creek in the Hundred of Playford 
(T. C. C.); Blinman (T.C. C.); Mount Lofty and Barossa 
Ranges (Burr). 
Macnerite!!!—Near Mount Jagged, Mount Lofty (T.C. C.); 
Mount Torrens, Mount Victoria (Brown); Winninnie 
(Goyder); The Peake, Central Australia, Hundred of 
Cunningham (Tate); crystalised and massive varieties are 
of very general occurrence from Cape Jervis to Black 
Rock Hill (Burr). The following analysis of a sample of 
ore from Mount Lofty is by Wallace, of Glasgow :— 
Ferric oxide... a ROGUE ante o 
Ferrous oxide ... . 5°66 \ AE Se 
Manganic oxide is 20 
Sulphur ands ous 20 
Iron,combined with sulphur +18 
Phosphoric acid jee ‘05 
Alumina, &ec. ... se et to 
Magnesia i aed 
Silica 92 
100-00 
