OCCURRING IN TASMANIA. 25 



Kesult of two analyses of the pure material: — 



S =2405 S =23-01 



Bi = 55-93 Bi = 56-08 



Sb = 10-08 Sb = 9-33 



Cu= 6-86 Cu= 6-12 



Fe = 5-18 Fe = 5-44 



102-10 99-98 



Answering to the formula — 



7 Bi^ S3 + 2 Sb, S3 + 5 Cu Fe S, 

 (Locality, No. 1 Curtin-Davis Mine, Ringville.) 



33 HuASCOLiTE. — (Sulphide of lead and zinc.) 



A massive, fine-grained, dark-coloured and somewhat 

 dull substance — Comstock Mine. Zeehan. 



34 H YDROM AGNES ITE. — (Basic carhonate of magnesium.) 



Occurs in solid, almost white, radiating bunches — 

 Comstock Mine. Zeehan. 



35 Hypersthene. — (Magnesium and iron metasilicate.) 



In basalt. Circular Head; in granite, St. Mary's 

 Pass. 



36 Jamiesonite. — (Sulfhantimonite of lead.) 

 Analysis of a sample from the Magnet Mine : — 



= 0*12 per cent, = 39 ozs. 4 dwts. 10 grs. per ton. 



98-85 



Analysis of a sample from the Silver Spray Mine, 

 Zeehan, by W. F. Ward, Government Analyst: — 



Pb = 40 



Sb =29 



S =18 



87 



