NOTES ON UNRECORDED AND OTHER 

 MINERALS OCCURRING IN TASMANIA. 



7?// W. r. Petterd. 



The following notes, in conjunction with a paper upon the 

 subject published in the proceedings of the Royal Society 

 of "Tasmania, 1897, embrace the work done to elucidate 

 the mineralogy of the State since the publication of the 

 "Minerals of Tasmania, 1896." 



They comprise many interesting substances of more recent 

 discovery, including one, or perhaps two, which are quite 

 new to mineralogical science. It will be found that 

 49 species hitherto iinknown as occurring in this Island 

 have been added to the already voluminous catalogue, and 

 additional localities and associations are recorded for several 

 previously known. An important feature is the record of 

 several complete analyses of complex substances, for which 

 I am indebted to Mr. S. Pascoe, of the Magnet Silver Mining 

 Company, and Mr. O. E. White, of Hobart, to whom I 

 return my sincere thanks for their ready and valuable assist- 

 ance. Such work is invariably a welcome addition to 

 mineralogical investigation, and I am sure it will be duly 

 appreciated by those interested in this field of enquiry. In 

 many cases it is only by such means, coupled with crystal- 

 logi'aphic characters, that the specific identity can be attained 

 with reasonable certainty. It is almost needless to say that 

 in this department much yet remains to be done before we 

 can possess a comprehensive knowledge of the minerals 

 known to occur in this State. 



1 Analcite. — {Hydrous silicate of sodium and alu- 



minium.) 



Somewhat abundant in the haiiyne phonolite of Port 

 Cygnet. 



2 Anorthoclase. — (Triclinic soda-pofash-felspar.) 



In rhombic sections of a shining milky-white. 

 Solvsbergites of Port Cygnet. 



