SOME NEW SOUTH WALES AND OTHER MINERALS. 323 
met with at seventy feet, one hundred and ‘twenty feet, and 
one hundred and eighty feet levels, in fact all the way down 
so far. The lode is a contact one, between a dyke of quartz 
diorite and the massive granite of the country. ‘The fissure is 
about eight feet wide at the one hundred and twenty feet level, 
of which about four feet is quartz carrying argentiferous minerals ; 
the yield of silver is found to be much greater where the prou- 
stite crystals are present. : 
The crystals are on a bluish quartz, containing mispickel ; they 
are of a full red colour, translucent, with vitreous lustre, and 
about 4; to + millimetre in length. I was able to obtain the 
reactions for arsenic, sulphur, and-silver, but no attempt was 
made to make a quantitative analysis as it was only with diffi- 
culty that a few hundredths of a grain were obtainable. 
Proustite is reported by Mr. C. Marsh! to occur also at Broken 
ScuHEELirE—Calcium tungstate, CaWO,. 
Lady Hopetoun Mine, Glen Innes, N.S.W. 
Massive, coarsely crystalline, of a pale brownish stone colour. 
Hardness, 5, Sp. gr. 5-93, another portion 5:3 only. 
A fairly pure calcium tungstate, containing a little water, 
223%, of Silica, 1:52 of iron sesquioxide, and a trace of 
manganese, ‘ 
Tiystonz Crysrats—Elsmore Mine, Inverell, N.S.W. 
In stout pyramids, usually about half-an-inch through, but 
Some of them are much larger. Very slightly water-worn at the 
edge, otherwise the crystals have the faces of the pyramid well 
‘developed and of a high metallic lustre. Yielded a white powder. 
Sp. gr. 6-68, Hardness, 6°5. 
Analysis. 
Tin oxide, SnO, wee 9 
Silica, SiO, ... ds 
1 a tent ree sea 
Geology of the Broken Hill Lode, &c., by J. B. Jaquet, p. 90. 
Sydney, ig94, 
