CERUSSITE CRYSTALS FROM BROKEN HILL AND MULDIVA. 289 



CERUSSITE CRYSTALS PROM BROKEN HILL, NEW 

 SOUTH WALES AND MULDIVA, QUEENSLAND. 



By O. Anderson, m.a., d.Sc, (Edin.) 



Mineralogist to the Australian Museum, Sydney. 



(Contribution from the Australian Museum.) 



With Plates LII - LIV, and Six Text-figures. 



[Bead before the Royal Society of N. S. Wales, November 3, 1915.] 



Cerussite prom Broken Hill. 



Of the mineral species found in the oxidised zone of the 

 Broken Hill lodes none are better developed or more 

 characteristic than cerussite; indeed anyone with a little 

 experience can at once distinguish the cerussite of Broken 

 Hill from that of any other locality. Short descriptions of 

 the mineral have been published by Miigge, 1 and Spencer, 2 

 and a fairly detailed account by Marsh. 3 Some years ago, 

 a paper in which crystals of cerussite from Broken Hill 

 were described, appeared in the Records of the Australian 

 Museum, 4 but since that time the Trustees have acquired 

 some fine specimens in the collection of Mr. George Smith 

 and from the Dixson (formerly the Aldridge) collection, 

 and I am now in a position to supplement the previous 

 account, and to clear up some points which were formerly 

 obscure. In the interval I have obtained from the authors 

 reprints of the important papers by Goldschmidt on the 

 cerussite of Mapimi, Mexico, 5 and by Hubrecht on the 

 cerussite of Sardinia, 6 and am therefore able to compare 



1 Miigge, N. Jahrb. Min. n, 1897, p. 78. 



2 Spencer, Min. Mag., xiii, 1901, p. 39, f.n. 



3 Marsh, Trans. Austr. Inst. Min. Eng., iv, 1897, pp. 141 - 147. 



4 Anderson, Rec. Austr. Mus., vi, 1907, pp. 407-410. 



5 Goldschmidt, N. Jahrb. Min. Beil.-Bd. xv, 1902, pp. 562 - 593. 



6 Hubrecht, Zeits. Kryst., xl, 1905, pp. 147 - 188. 



S— November 3, 1915. 



