BY J. STEWART BERGE, ETC. 59 



Eeference No. 



79. Selcniwii. 



Specimens have been obtained from the Albion 

 Mine at Mt. Albion, some of which were 

 exhibited at the Melbourne Exhibition in 1888. 



Common at Chillagoe. 



80. Titanium — Ixutile — Titanic oxide . 



Coolgarra and Tate Tin Mines. 



Also fairly abundant in the gold gravels. 



DIVISION 2.— SECTION 2. 



Compounds of elements forming earths, clays, etc., 

 excepting silica. 



81. Aluminium. — 



82. Aluminite — Hi/drous alwiriniwn sulphate. 



Coolgarra. 



83. Alumina. 



The oxide is a constituent of a large part of the 

 earthy siliceous minerals, as the felspars 

 micas, etc., and the characterising ingredient of 

 common clays. 



(See micas and felspars). 



84. Magnesium. — 



Its compounds occur abundantly as in talc dolo- 

 mite, which, see 

 8^5. TJpsomite — M(ii/}iesium suJphatc. — 



Lady Catherine Mine on the Hodgkinson. 



86. 2la(inesite — (Jarb magnesium. 



Newellton. 



87. Calcium. — 



Widely and abundantly disseminated as in its 

 compounds, limestone, gypsum, fluorspar, all 

 of which are given in this list. 



88. Potassium. — 



Occurs combined in the minerals muscovite, 

 orthoclase, etc. 



89. Boron. — 



Occurs combined as in tourmaline. 



90. Sodium. — 



Always occurs combined, as in albite. 



