1871.] 



NOEDEIfSKIOLD — GEEENLAND METEORITES. 



45 



C. Brecciiform stones composed of fragments of the iron cemented 

 togetliei' with hydrated oxide of iron and newly formed silicate of iron. 



D. Close to the iron masses which occur in the basalt are also 

 found enclosed fragments of a rock unlike the basalt itself, and 

 remarkable for being rounded on the edges and having what re- 

 sembles a meteoric crust on the exterior ! I do not venture to 

 express any decided opinion as to the origin of this variety. 



E. As grains disseminated in the basalt, occasionally as large as 

 peas or beans, but oftener only as fine scales, which, in my opinion, 

 have in part been disseminated through the basaltic ash which was 

 the material from which the present basalt was formed, and in part 

 produced through pseudomorphic processes due to the presence of 

 the large iron masses themselves, and which it is without doubt easier 

 to explain than to account for the tin- ore (cassiterite) pseudomorphs 

 of orthoclase found in Cornwall. 



The great mass of the Greenland basalt is without doubt only 

 consolidated beds of basaltic ashes. 



Within an area of at most 50 square metres 15 meteorites were 

 found, which weighed as follows in Swedish pounds : — 50,000, 

 20,000, 9000, 336, 230, 200, 191, 150, 150,100, 56, 42, 15, 8, and 6, 

 the three largest being in their diameter respctively 2 by 1*7 metres, 

 1-3 by 1-27 metre, and 1-15 by 0-85 metre. About 100 lbs. of 

 lenticular-shaped fragments of iron, from 3 to 4 inches thick, were 

 also extracted from the basalt dyke close at hand. 



The following analyses show the chemical composition of the 

 iron : — 



Part of one of the Of a lesser Of iron from 



largest blocks, block, the basalt, 



A. E. Nordenskiold. Th. Nordstrom. G. Lindstrom. 



Iron 



. 84-49 





86-34 



93-24 



Nickel 



2-48 





1-64 



1-24 



Cobalt 



0-07 





0-35 



0-56 



Copper 



. 0-27 





0-19 



0-19 



Alumina . . . 



trace 





0-24 





Lime 



trace 





0-48 





Magnesia. . . 



0-04 





0-29 



trace 



Potash 



trace 





0-07 



0-08 



Soda 



trace 





0-14 



0-12 



Phosphorus . 



0-20 





0-07 



0-03 



Sulphur . . . 



1-52 





0-22 



1-21 



Chlorine . . . 



0-72 





1-16 



0-16 



Silica 



trace 





0-66 



• • • I 0-59 



Insoluble . . . 



0-05 





4-37 



Carbonic or 



^ 





ganic matte 

 water (an 



n 10-16 





3-71 



rC2-30 

 ••• tHO-07 



loss) 



100-00 



99-93 



99-79 



Sp. gravity 6-36 & 5-86 



7-05 & 7-06 



6-24 



