344 A. LIVERSIDGE. 



bromine as it was found to yield the best surfaces. The 

 crystalline structure is well defined (octohedral) with a 

 damascene-like lustre, and it is noticeable that the groups 

 of crystals pass obliquely across from side to side and from 

 end to end of the meteorite. One or two small specks of 

 troilite are to be seen, and at the thick end are two well 

 marked cracks which pass out right through to the crust 

 and are connected with the pit at the thick end (See Plate 

 4, fig. 2). The crystalline structure is distinct from that 

 of any of the other Australian meteorites which have come 

 under my notice. The absence of deep pits and thumb-like 

 markings on the surfaces of this and the Bingera meteorite 

 may be due to the absence of large troilite enclosures. 



Chemical Composition. — A qualitative analysis showed 

 the presence of iron, nickel, cobalt, manganese,? chromium, 

 copper, tin,? arsenic, gold and platinum (or metals belong- 

 ing to the platinum group), also carbon, phosphorus and 

 sulphur. 



The gold and platinum were first found in the residue 

 left after acting upon the meteorite with cold hydrochloric 

 acid, to which sulphurous acid had been added to render it 

 free from chlorine. The residue was then ground with 

 water in an agate mortar and the lighter materials washed 

 out ; any magnetic particles were next removed by a 

 magnetised needle ; some bronze coloured metallic looking 

 feebly magnetic and fairly malleable particles were usually 

 left, soluble in nitric acid; these contained copper, chromium 

 and iron, and require further examination. The particles 

 of what appeared to be gold and platinum were then picked 

 out on the point of a needle and examined under the 

 microscope, when warmed with nitric acid on the micro- 

 scope slide; they were found to be insoluble; to make doubly 

 sure, the evaporation with nitric acid was repeated. 



Yellow and white metallic particles, apparently gold and 

 one of the platinum metals, were also obtained in the 



