~2 I^KESIUENTIAL ADDRESS SECTION H., 



Pietersburg, where there are two distinct layers of the mineral, 

 averaging six feet and 12 inches in thickness respectively. The 

 main layer averages 39 per cent, of chromic oxide, and it is 

 believed that this can easily be brought up to 42 per cent, by 

 hand-picking. 



The principal mineral product of the Bushveld Province is 

 tin. which, as already stated, has a very wide distribution. Con- 

 ditions known to be favourable to the occurrence of the metal, 

 moreover, exist over extensive areas, as yet but imperfectly pros- 

 pected, and it may safely be predicted, therefore, that many 

 important cassiterite deposits will, in the course of time, be 

 discovered within it. The same applies to most of the other 

 metals previously mentioned, and the Bushveld Province appears 

 altogether ^ be an area of exceptional promise from the point 

 of view of future discoveries. 



The Transvaal .Snstem Provinces. 



These are t\vo in number. The more important, marked A 

 on the accompanying map, takes in a large tract of country in 

 the Central and Southern Transvaal ; and the other, marked B, 

 the greater part of Griqualand West. 



They are occupied mainly by the rocks of the Transvaal 

 system, but for convenience both have been made to include fairly 

 considerable areas of sedimentary and igneous rocks belonging 

 to the Waterberg system, the Transvaal region in the Pretoria 

 and Middelburg districts, and the Griqualand West region along 

 its western margin. 



The Transvaal region of the Transvaal .System Province 

 ranks third in point of output among the various provinces. 



It includes the Premier Diamond Mine,* the Pilgrim's Rest 

 and Ottoshoop goldhelds, the gold mines on the Black Reef, in 

 the Southern and South -Western Transvaal, the asbestos occur- 

 rences of the Lydenburg district, and the extensive deposits of 

 iron-ore in the Pretoria series, and is clearly destined for many 

 years to be an important source of mineral wealth. 



It also produces lead, pyrite, manganese, blue lime, fluorspar, 

 and slate, and contains the only economically-important deposits 

 of zinc hitherto discovered in the Union. Silver, copper, and 

 cobalt have been worked, and potassium nitrate, cinnabar, f and 

 lead vanadate fQiind within it. 



The great variety of its mineral products, the fact that these 

 occur at such widely-separated localities, and the uniformity of 

 the geological conditions prevailing over great areas render the 

 prospects of future discoveries within the province distinctly 

 bright. 



* The Premier Mine, tliough almost completely surrounded by felsite, 

 belonging to the Bushveld complex, lies well within the limits of the area 

 occupied by the Pretoria series. 



+ Tn the Malmani district at Ottoshoop. 



