METEORITES, N.S.W. 353 



Lat. 30° 3' S., Long. 146° 56' E. Mr. Russell states 1 that 

 its weight is 67^ lbs., and that it has a sp. gr. of 3*857. 

 It is quite evident that at one time it was much larger as 

 it is much weathered and cracked ; in spite of every care 

 large pieces have fallen off since it has been in Mr. Russell's 

 possession. 



The meteorite contains a considerable amount of metallic 

 matter, 34 grammes yielded 14'7°/° of the nickel-iron alloy, 

 hence it was troublesome to prepare the slides for the 

 microphotograph as the metallic particles tend to tear out, 

 and as might be expected it strongly attracts a magnetic 

 needle. Like the Barratta meteorites the structure is 

 chondritic. (See Plate 12, fig. 13.) 



Ten grammes of this meteorite extracted with a magnet 

 and then reground and washed in an agate mortar 

 yielded two specks of a yellow metal, the smaller speck 

 was insoluble in nitric acid with which it was twice 

 evaporated down to dryness and therefore presumably gold. 

 The somewhat larger and paler speck was slowly acted 

 upon by nitric acid and left a black residue which may 

 have been finely divided gold, but it did not acquire a 

 metallic lustre when burnished. Afterwards 32 grammes 

 were treated in the same way, some yellow metallic par- 

 ticles were obtained, but these dissolved in nitric acid. 

 None of the others, viz. Barrattas 1, 2 and 3, Gilgoin No. 2 T 

 nor the Hay meteorite yielded gold. 



Thirty-four grammes of the Gilgoin meteorite No. 1 

 yielded 7*3 grammes of magnetic matter and this after 

 fusion with potash, left 5 grammes of metallic matter or 

 14*7°/° on the origiual 34 gms. As already stated this is 

 not a satisfactory method, as the nickel-iron alloy (Schrei- 

 bersite) loses phosphorus and the magnetic matter entangles. 



1 Journ. Roy. Soc, N.S.W., 1889, p. 47. 

 W— Dec. 3, 1902. 



