NO. 2 BIBLIOGRAPHY OF TIN HESS 159 



SWAZILAND (Continued) 



1050. JORISSEN, E. Notes on some intrusive granites in the Transvaal, the 



Orange River colony and in Swaziland. 



Trans. Geol. Soc. South Africa, Vol. 7, 1905, Johannesburg, p. 158. Read Decem- 

 ber 12, 1904. 



In East Swaziland near Embabaan, cassiterite occurs in gneiss at the contact of a 

 narrow vein of pegmatite. Much biotite present. 



LOCK, C. G. WABNFORD. See No. 1338. 



1051. LYBURN, JOHN. Mining and minerals in the Transvaal and Swaziland. 



Sci. Proc. Roy. Dublin Soc., n. s., Vol. 9, 1899-1902, Dublin, p. 20. 

 " Alluvial cassiterite occurs in the Embabaan, Swaziland. The mother lode has 

 not yet been discovered." 



1052. MOLENGRAAFF, G. A. F. Tinstone in Swaziland. Report of the State 



geologist of the South African Republic for the year 1897. 



Trans. Geol. Soc. South Africa, Vol. 4, pt. 6, 1898, Johannesburg, pp. 141-144. 



Abstract: Zeitschr. prakt. Geol., Vol. 8, 1900, Berlin, pp. 146-147. 



Digest: Neues Jahrb. Min., 1900, I (Ref.), Stuttgart, pp. 263-265. 



The Ryan tin works near Embabaan in the northeast part of Swaziland, are the 

 only important deposits of the country. Sn0 2 occurs in pegmatite dikes cutting 

 granite near the contact of the latter with various schists, and in placers derived 

 from the dikes, accompanied by corundum, monazite, magnetite, etc. Crystals of 

 cassiterite are so distorted as to appear monoclinic. Does not think the outlook good 

 for very large placers. 



1053. NEWLAND, D. H. Tin in 'South Africa. 



Min. Ind. for 1903, Vol. 12, 1904, New York and London, p. 332. 



Discovery of lode tin in the Transvaal was reported in August, 1903. Principal 

 formation is granite, which is overlain in places by schistose rocks, and the tin- 

 bearing veins occur near the contact. Three lodes have been discovered. 



1054. PRIOR, G. L. Minerals from Swaziland: niobates and titanates of the 



rare earths, chemically allied to euxenite and fergusonite; cassiterite, 

 monazite, etc. The " Aeschynite from Hittero." 



Min. Mag. Journ. Min. Soc., Vol. 12, 1899, London, pp. 96-101. 

 Digest: Neues Jahrb. Min., 1901, I (Ref.), Stuttgart, p. 31. 



1055. RYAN, . Swaziland tin fields. 



Proc. Chem. Met. Soc. South Africa, Vol. 2, 1897, Johannesburg, pp. 16-18. 



Tin fields along Embabaan River on eastern slope of Drakensberg Mountains, 15 

 miles from Transvaal border were discovered by Mr. Ryan in 1891. Geology: 

 " Granite boss flanked by metamorphic rocks intersected by elvan dykes, diorite and 

 rhyolite." From January, 1894, to June, 1896, exported about 600 tons of ore. Deposits 

 mostly alluvial, average thickness of beds 4 1 /& feet, though on Lower Embabaan and 

 Usutu rivers, beds of considerable thickness are being found. 



1056. SMUTS, . Report on the trade, commerce and general condition of 



Swaziland. 



British Consular Rep., No. 1996, 1897, London, p. 3. 



The Ryan Tin Company has done a good deal of work during 1896. First 6 

 months, by sluicing process, upwards of 260 tons of tin were produced, valued at 

 about 45 sterling per ton. During latter half of year, about 20,000 tons of tin- 

 bearing gravel was exposed. Tin reefs have been discovered, and further prospecting 

 is being undertaken. 



