252 E. GRIFFITHS. 
Analysis gave the following results:— 
Bi,O,; one sie as so == Vouiee 
V.O; (including trace of P.O;) = 25°31% 
Fe,O, a aie a jue = SG 
Residue insoluble in HCl Joc = Bier 
The method of analysis was as follows:—The mineral 
was treated with hydrochloric acid, the insoluble residue 
removed by filtration, and the bismuth precipitated as 
sulphide. The sulphide was dissolved in nitric acid, the 
solution evaporated almost to dryness and treated with 
water in order to obtain the bismuth oxynitrate; this was 
ignited to oxide and weighed. The chloride solution con- 
taining the vanadium was converted intoa nitrate solution 
by evaporation with nitric acid. The iron was precipitated 
by adding a slight excess of sodium carbonate, the precipi- 
tation being repeated four times. The small quantity of 
vanadium still retained by this precipitate was removed 
by fusing with sodium carbonate and extracting with 
water, the extract being added to the main solution, The 
vanadium was precipitated from the slightly alkaline solu- 
tion as mercurous vanadate by means of mercurous nitrate. 
The precipitated vanadate was ignited to the pentoxide 
and weighed as such. 
The analysis and physical properties agree fairly well 
with those recorded in Dana’s Mineralogy for Pucherite , 
Bismuth vanadate. SofarasIhave been able to ascertain 
this is the first recorded instance of the occurrence of 
Pucherite in Australia. 
In conclusion I desire to thank Acting-Professor Schofield 
for affording me the opportunity of working on the mineral 
and also for much useful advice during the work. 
