ON SOME NEW SOUTH WALES MINERALS. 45 
AXINITE, 
This mineral has been found near Nundle, by Mr, D. A. Porter 
of Tamworth, a diligent and painstaking collector of minerals, to 
whom we are also indebted for bringing to light several minerals 
new to the Colony. 
The mages are large, fairly well formed, and of a clove brown 
colour. 
IDocRASE. 
Mr. Porter has also found idocrase in the same district, of a 
green colour, associated with small salen one crystallized 
in rhombic dodecahedra, apparently of the va fee known as 
grossularite, consisting of silicate of lime and alumina. 
TRONSTONE CONCRETIONS. 
The hollow nodules of ironstone were found by Mr. Murdoch, 
of the Railway Department, in the bed of the Macquarie River, 
near Dubbo, where they apparently are not uncommon. 
The outer shell consists for the most part of brown hydrated 
oxide of iron, and when first found they are quite soft and can be cut 
with a knife. Iam informed that the interior is usually filled with 
sand, which can be shaken out, leaving a hollow cavity. Although 
ard and compact, they are evidently of quite recent origin. 
LITHOMARGE. 
A variety of lithomarge, a hydrated silicate of PI of a pale 
bluish colour, more or less translucent, occurs as the matrix of native 
copper is scattered through it in small granular crystalline masses. 
reaksin places with a somewhat conchoidal fracture, but earthy 
in others. Soft and greasy feel. 
Curome Iron Ore. 
A very rich chrome iron ore deposit occurs near Nundle. The 
outcrop which I saw was about 700 feet above Bowling Alley 
Point, and the apparent thickness of the vein is in one 
40 odd feet ; one huge block of the mineral lying loose on the 
surface, measures about r feet long by 6 feet high and 5 feet wide. 
rome iron vein is in association with serpentine, diallage 
rock, and black slates. This deposit ought to be easily and cheaply 
worked, 
Chrome iron of good quality also occurs with serpentine beyond 
Young in the Bland district. 
Iron Pyrites Concrerions. 
Some very interesting concretions of iron pyrites occur at the 
_ Sunny Corner Silver and Gold Mine, which is situated on 
Mitchell’s Creek, some 16 miles from Rydal, on the Western line. 
