ilvaite was first found in Greenland by K. J. V. Steen - 

 strup, who, in 1874, brought some pieces from Kangerdluar- 

 suk. This material was examined by Lorenzen (The present 

 journal И, 1881, 67.— Min. Soc. London 5,63. — Groth Zeit- 

 schr. 7,609; 9,243). 



In the years 1876 and 1888, S teen s trup, however, brought 

 ilvaite from the locality S io rar suit, situated at the southern 

 shore of the Tunugdliarfik- Fjord, which stretches parallel 

 to and north of the Kangerdluarsuk-Fjord. The two loca- 

 lities of the ilvaite are situated on the same peninsula, between 

 the two fjords mentioned, and with a distance between them of 

 only about 5 km. There is, however, no nearer connection 

 between the two places, at all events not in the present surface 

 of the mountains. 



The locality was later, in the summer of 1897, visited by 

 G. Flink ^), who gave the first description of the occurrence, 

 and collected a rich material, which has latei- been considerably 

 supplied by collections, made by Steens trup and Theilgaard 

 in the summer of 1899. Finally collections have been made in 

 the summer of 1900 by N. V. Us s in g and the author. 



The material in hand is exceedingly rich ; it consists of 



^) Gustav Flink: Berättelse om en Mineralogisk Resa i Syd-Grönland 

 sommaren 1897 (The present journal XIV, 1898). 



