318 A. LIVERSIDGE. 
them as violet rubies, or barklyite, from the Ovens district in 
Victoria.2 Apparently, too, it has never been met with in any 
quantity, and the variety does not appear to be sufficiently distinet 
to warrant a special name. 
It consists principally of alumina, (Al,O;) but the analysis in 
hand is not yet completed. 
Curysoconta—Hydrous copper silicate. Broken Hill, N.S.W. 
As incrustations and stalactitic forms, with mammillated sur 
faces, of a sky blue and green colour. Vitreous lustre in parts. 
Conchoidal fracture. Hardness 4. Streak, pale blue. Effervesces 
slightly on warming with HCl, from the presence of a little copper 
carbonate. Before the blowpipe, it darkens and breaks up slowly 
with decrepitation. In tube it gives off much water and a nitro- 
genous odour. Soluble in HCl and HNO, with a residue of silica. 
Breryt— Vegetable Creek, New England, N.S. W. 
Described in a paper read before this Society, December 2, 
1891. Sp. gr. 2°80. Hardness, 7°5. 
Analysis. 
Silica Rs eh 1 OS eee 
Alumina... ae as Ne pe 
Beryllia —_... dis a ie eres 
Tron sesquioxide ... sus es ove 6 
Lime ais ‘ik we she ... traces. 
99-4 
Crocois1re—Dundas, Tasmania. 
In brilliant crystals of a deep orange-red colour, about 3" 6 
seated on a mangano-ferruginous matrix. The Dundas mne% 
have yielded some fine groups of crocoisite crystals, with the 
prisms several inches long ; associated with cerussite, galena and 
occasionally anglesite and other lead minerals. Hardness, 2°5. 
Sp. gr. 5-92, 
1 Trans. Roy. Soc., Vict., 1865, p- 70. 
