272 Scientific Proceedings; Royal DuhUn Society. 



Analyses of Wicklow Gold.* 



The low specific gravity is due to the porosity of the gold ; A, was of 

 a large nugget — 0, small grains. 



Comparative Analyses of Some Queensland Gold. 



" The gold was found accompanied by other metallic substances 

 dispersed through a stratum composed of clay, sand, gravel and 

 fragments of rock, and covered by soil, which sometimes attained 

 to a very considerable depth, from twenty to fifty feet, in the bed 

 and banks of the diiferent streams. In every instance where gold" 

 was found there was " also found fragments of magnetic iron ore 

 and quartz, containing chlorite, iron ochre and martial pyrites, 

 attended, more particularly at the works at Ballinvally, with 

 specular iron ore, brown and red ironstone, tinstone crystals, wol- 

 fram, and grey ore of manganese" Tinstone was also found in 

 Monaglogh and Coolbawn. 



In some specimens quartz was adherent to the gold, the mag- 

 netite, and to the wolfram ; and also the gold sometimes was 

 found incorporated with wolfram and ochre. 



Mr, William Mallet has since added the following minerals to 

 these lists : — 



Galena, titanite, calcopyrite, molybdenite, with the gems 

 sapphire, topaz, zircon, and spinelle, besides some minute specks 

 of a white metal that appeared to be platinum. It may also be 

 remarked that on washing the sand, numerous little white 



* For Welsh gold, see " Phil. Mag." (4) xxxiv., 331 and xxxviii., 321. Watts' Diet. 

 2ndSupp.,573. 



