Dundasite was first described by W. F. Petterd

in 1893, and an analysis of Tasmanian material was

published in 1910

Ford, RJ

University of Tasmania Open Access Repository

PAPERS AND PROCEEDINGS OF THE ROYAL SOCIETY OF TASMANIA, VOLUMl<} 101. A NEW ANALYSIS OF DUNDASITE FROM TASMANIA By R. J. FORD. Geology Department, University oj Tasmania. Dundasite was first described by W. F. Petterd in 1893, and an analysis of Tasmanian material was published in 1910. This analysis shows Fe,O" as a large impurity, with high AleO, due to probable anmixture of gibbsite which is an associated mineral at Dundas. Analyses of relatively uncon-taminated material from elsewhere have been presented in the literature (Prior 1906, Palache et aZ. 1961, Beaumont et Guillemin 1960) with Beaumont and Guille:nin deriving a formula for material from Sardinia of Pb, AI, (CO,J, (OH), 3H,O rather than Ph Al (CO,) 2 (OII) , 2H:O as suggested by Prior. The analysis was performed by the Australian Mineral Development Laboratories on handpicked material taken from a specimen of dundasite (No. 14134) presented to the University of Tasmania with a collection of crocoite from Dundas. It agrees well with the proposed formula. PbO AI20" Fe20, CO, H 20+-H,O-Dundasite 46.60 21.50 00.02 18.10 13.90 00.08 100.20 Pb,AI, (CO), (OH),3H,o 46.87 21.41 18.48 13.24 100.00 Analyst: C. R. Edmond. The greatest differences occur between H 20; and C02. As these are complementary it is probable that some (OH) replaces (CO,)' in the structure. REFERENCES. BEAUMONT, C. et GUILLRMIN. C., 1960.--C. La Dundasite de Gonne:sa (Sardaigne). (H)60) BuB. Soc. franc. Miner. Crist,. LXXXIII. 121-124. PALACHE, BERMAN, FRONDEL (ed.). 1951.~-Dana·8 System oj Mineralo,qy. Vol. II 7th ed. (Wiley) p. 280. PETTERD, W. F., (1893-1894) .-A catalogue of the minerals known to occur in Tasmania. Pap. R01/. Soc. Tasm., 26. -------(1910) .--Catalogue of the Minerals of Tas-mania. Pap. Ro'Y. Soc. Tasm .. {-i6. PRIOR, G. T., (1906)--Min. Mag., 14, 167. 9 

A new analysis of Dundasite from Tasmania

http://eprints.utas.edu.au/14248/1/1967_Ford_New_analysis_Dundasite.pdf

A new analysis of Dundasite from Tasmania

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