MINERALOGICAL NOTES: No. IX.— TOPAZ, QUARTZ, 



MONAZITE, AND OTHER AUSTRALIAN MINERALS. 



By C. Anderson, M.A., D.Sc. (Edin.), Mineralogist. 



(Plates xxxvi.-xxxix.) 



TOPAZ. 



Cow Flat, near Torrington, New South Wales. 



(Plate xxxvi., fig. 1.) 



Three fine, isolated, colourless crystals, the largest measuring 

 '1 X 14 X 1-6 cna., have been recently added to the Museum col- 

 lection ; the exact locality is Meehan's Lease. The crystals, 

 which have a pyramidal liabit, are slightly waterworn, but tlie 

 two which were measured gave fairly good signals. 



angles. 



The prism faces are in general vertically striated ; on 7n (110) 

 are raised rectangular markings (inachfuvis-figitren), similar to 

 those described on the topaz of Carpet Snake Creek ' . Reflect ion.s 

 were obtained from the sides of tln'se markii)g.><, the average (h 



'Anderson — Ausir. Mue. Rec, vii., 11)09, pi, Ixxix., tig. 2. 



