766 



SUBANTARCTIC ISLANDS OP NEW ZEALAND. [Soils and Soil-formers. 



K 2654 is a coarse sand freed from gangue ; it was collected on the sea-shore, 

 near the woolshed on Perseverance Harbour, Campbell Island, on the 13th January, 

 1909. The sample, which was very coarse, was freed from gangue before analysis. 

 The high proportion of titanium (and possibly zirconium), and the presence of tin 

 in small quantities, is the most interesting feature of these ironsands. Taranaki 

 ironsands contain only a low percentage of titanium. Maclaurin (26) found 9-2 per 

 cent. TiOg in a sample from New Plymouth beach (sample No. 9323). 



K 2766 is a fine sand, analysed without removing gangue. It was collected 

 on the beach at North-west Bay, Campbell Island, on the 12th January, 1909. It 

 is a sample of much finer grain than K 2654, and no attempt was made to separate 

 any gangue or siliceous matter. 



Carbonaceous Eocks (Limestone and Chalk), Campbell Island. 







nter- 

 with 

 ay. 



ar to 



alysis 

 Com- 

 ceous 

 e. 





CM § 



CO M 



^■"^0 

 ^ ,7'^ ^ 





-^^il 









Oq "to -^ 



W^.2 



^"^ ffi -p s 





1-:! 



-^ &N 



Ph 













Ph 



Ph 



Water 



2-51 



1-95 



3-80 



1-44 



Silica (SiOa) 



19-30 



1-91 



64-06 



57-46 



Iron-oxide (Fe203), alumina, and titanium- 



3-64 



303 



1-44 



1-48 



oxide (TiOa) 











Calcic carbonate (CaCOg) 





73-80 



90-33 



27-90 



39-26 



Calcic oxide (CaO) 





. . 



, . 



. , 



, . 



Magnesic carbonate (MgCOg) . . 





0-75 



0-95 



0-30 



0-36 



Magnesic oxide (MgO) 





, . 



. . 



. , 



. .. 



Phosphoric anhydride (PgOg) 





Traces 



1-21 



Trace 



. . 



Soda (NagO) and potash (K2O) 







. . 



0-25 



. . 



Ferrous carbonate (FeCOg) 







. . 



2-08 



. . 



Sulphides and carbides 









Trace 





Specific gravity 



■ 







2-28 



2-15 



K27II, from Perseverance Harbour, Campbell Island, collected on the 12th 

 January, 1909, is a very hard, light-grey rock, resembling flint, weathered to white 

 for about J in., covered with iron-stains. A smell of carburetted hydrogen is given 

 off when the rock is treated with hydrochloric acid. It is hard enough to scratch 

 glass. Contains traces of sulphides. It is very similar in composition to a speci- 

 men of hard, compact, siliceous limestone from a vein in basalt at South Harbour 

 (Perseverance Harbour), Campbell Island, collected by McCormick, and described 

 by Prior (14). A thin section showed that it consisted largely of the remains of 

 Foraminifera (Glohigerina) in fairly good preservation. A note is given of the 

 palaeontology of the specimen. 



