THE MINERALS OF NEW SOUTH WALES. 173 



Occurs in minute crystals at Gulgong. It is also found at New- 

 stead Mine, New England, with arragonite • in basalt, at Jordan's 

 Hill, Cudgegong River. 



Thick bands of grey-coloured impure carbonate of iron, some of 

 which contain about 10 per cent, of metallic iron occur in the coal 

 measures at Jamberoo. 



Chrome Iron. — Chromite. 



Chem. Comp. : Iron chromate = FeCr0 4 . Iron oxide, 32*0; 

 chromic acid, 68*0 = 100. 



Cubical system: Usually occurs massive, with a granular or 

 lammellar structure. Black in colour, and in small crystals and 

 water-worn grains in gold and gem bearing sands. 



In the Gwydir River and many of its tributaries, in Nundle 

 Creek, Two-mile Creek, the Horton River, Hanging Rock, at Stony 

 Batta with serpentine, Bingera, Reedy, Gundamulda, Kennedy's, 

 and Angular Creeks; also at Mudgee, the Murrumbidgee River, and 

 near Yass. 



Scorodite. 



Chem. Comp. : An arseniate of iron. Arsenic acid, 49*8 ; 

 sesquioxide of iron, 34*7 ; water, 15*5 = 100. 



Rhombic system : with iron pyrites, Cadell's Reef, Mudgee Road, 

 9 miles south-east of Mudgee. 



Pharmacosiderite. 



Chem. Comp. : Arseniate of Iron. Arsenic acid, 39*8. ; phos- 

 phoric acid, 2 -5 ; sesquioxide of iron, 40*6 ; water, 17'1 = 100. 



Cubical system. — Found crystallized in small olive-green cubes. 

 Subtranslucent. 



Locality. — To the east of Bungonia. 



Titaniferous Iron. 



Chem. Comp. : Iron and titanium. 



There are several different kinds of titaniferous iron, distinguished 

 by their physical properties and by the amounts of titanic acid 

 which they contain — such as ilmenite, iserine, menaccanite, &c. 

 Until those found in New South Wales have been examined, it will 

 it be as well, perhaps, to class them all under the general head of 

 titaniferous iron. 



Found usually with alluvial gold, about Ophir, Bathurst, Mudgee, 

 Bingera, and Uralla in the diamond drifts. Large rolled masses 

 occur at Uralla. Ilmenite, menaccanite, nigrine, and iserine are said 

 to occur with gold, garnets, and chrysolites in the Two-mile Flat 

 Creek Cudgegong River, and in the Lachlan with magnetite. 



