SUPPLEMENTARY NOTES ON SOME 

 ANTARCTIC ROCKS AND MINERALS. 



By W. a. Macleod and O. E. White. 



♦ 



In tlie proceedings of the Royal Society of New South 

 Wales, Vol. XXIX., page 461, et seq., appears a paper, 

 read in 1895, on Antarctic Rocks collected by Mr. C. E. 

 Borchgrevink. 



The authors are Professor David, Messrs. W. F. 

 Smeeth, and J. A. Schofield. A brief summary of this 

 valuable paper will be interesting, more especially as 

 since then there has been donated to the Tasmanian 

 Museum a small collection of Antarctic rocks and 

 minerals. 



The paper mentioned is sub-divided into two parts : — 



I. Introductory notes about Antarctica — 



(a) A general introduction. 



{h) A summary of the history of Antarctic 



Exploration. 

 (c) A summary of Antarctic Greology. 



Under this last head the authors show that Eruptive 

 Rocks (Plutonic and volcanic, granite pegmatite, granu- 

 lites, syenite, diorite, diabase, pumice, andesites, augite- 

 labradorite rocks, basalts, basic scoriae, Palagonite tuffs), 

 Sedimentary Rocks (Tertiary limestones, and rocks of, 

 perhaps, Triassic and Palaeozoic age, sandstones, shales, 

 quartzites, arkose), and Metamorphic Rocks (Grneisses, 

 mica schists, argillaceous schists) are well represented. 

 Then follows a list of the then known volcanoes, and 

 their heights and other interesting Geological data. 



II. Petrology of the rocks collected by Mr. C. E. 

 Borchgrevink : — 



(a) Specimens from Cape Adare — 



Garnetiferous-Granulitic-Aplite. 



Trachytes. 



Glassy Augite Andesite. 



Vesicular Andesite Glass. 



