92 



Case 73. 



Ilmenite. 



Hutile. 



Case 73. 



TITANIUM. 



A metal frequently found combined witli iron in the form of 

 oxides. Of little commercial use, but is said to have been recently, 

 in certain combinations, introduced as a dye for leather. 



Oxide of iron and oxide of titanium. A black mineral that can 

 be just scratched Avith a good knife, crushing to a powder that 

 is almost or quite black. JBy iliese characteristics it can always 

 he distinguislied from tinstone (see page 66). It generally 

 occurs scattered through certain igneous rocks, and becomes 

 naturally concentrated into black sand when such rocks are 

 disintegrated. Samples of black sands from different districts 

 are exhibited. 



6892, Deepwater : a massi^^e form. 



Oxide of titanium. 



7854, said to come from Milparinka. 



9013, Sydney Mat, Tralla. 



8745, Tingha : hair-like crystals enclosed in smoky quartz. 



VANADIUM. 



Found only as a staining in various coals and clays. 



1143, Leconfield : coal with a green colouration on the parting 

 face, due to the presence of vanadium. 



8553, Tomingley Grold Mine : a bright green staining on clay. 

 (See also under Sydney District, page 184.) 



Case 73. 



SULPHUR. 



7733, Consols Mine, Broken Hill : free sulphur on galena. 



Pree sulphur is occasionally found in small grains in lode 

 quartz. 



SELENIUM. 



6575, Mount Allen : slate containing a little selenium (not 

 visible to the eye). 



Traces of selenium can be found in various sulphide ores. 



