1872.] DAllfTREE GEOLOGY OF QtTEENSLAND. 



Gympie Crystalline Diorite (PI. X. fig. 2). 



General Constituents. 



„.,. Per cent, 



'^^"ca 50-500 



^lu^^ina 18-485 



Ferric oxide 1-470 



Ferrous oxide 6-440 



I^i°^e g.gOQ 



Magnesia 3.530 



J*otash 0-635 



Soda 1.055 



Sulphur 0-190 



Carbonic acid 0-820 



Water, constitution 1-600 



Water, hygroscopic 0-850 



99-975 

 Specific gravity, 2-752. 



Portion soluble in HCl., 54-775 per cent. 



Silica 41-944 



^l^i^ina ; ; ■ 19.562 



Ferric oxide 2-683 



Ferrous oxide 7-786 



Lime 



10-087 



Magnesia 9-940 



Potash ■ \\ 0-210 



Soda _. 2-000 



Carbonic acid 1-400 



Sulphur 0-347 



Water, constitution 2-921 



Water, hygroscopic 1-552 



100-432 



Insoluble in hydrochloric acid, 45-225 per cent. 



Siliea_ 60-862 



Alumina 17-187 



Ferrous oxide 5-180 



I^inie '..'.'.'.'.'.'..'. 7-240 



Magnesia 6.g2i 



Soda 



1-226 



Potash 1.028 



99-544 



293 



