NO. 2 BIBLIOGRAPHY OF TIN — IIESS 179 



TRANSVAAL AND RHODESIA (Continued) 



Describes the geology of the country in the neighborhood of Rooiberg, 40 miles 

 west of Warmbaths'. Tin occurs in granite, in irresrular pockets, as veins in sediments 

 and replacement deposits in quartzite. In one group of replacement deposits cassite- 

 rite occurs with cobaltite, scheelite, eupro-scheelite, wolframite, and tourmaline. 

 Nickel deposits are possiblj' connected with the tin deposits. The tin deposits were 

 worked long ago as shown by old pits, slag-dumps, etc., but by whom is unknown. 



1187. SiMMKRSBAcir, W. Die neuen Entdeckungen von Zinnerzlagerstatten 



in Transvaal. 



Zeitschr. Berg. Hutt. Sal. preuss. Sta., Vol. .53, 1905, Berlin, pp. 2-15-248. 



Digest: Geol. Centr., Vol. 7, 1905-1906, Leipzig, p. 521. 



" Im roten Granit 35-50 engl. ' Meilen nordostlich von Pratoria setzen die Zinnerz- 

 gilnge in einem 11 m machtigen bisweilen sich teilenden Hauptgange und 8 kleineren 

 parallel verlaufenden Nebengiingcn auf." — K. Keilhack. 



1188. Stewart, D. S. S. The mineral wealth of Zoutpansberg: the Murchison 



Range gold-belt. 



Trans. Inst. Mg. Eng., Vol. 17, 1S9S-1S09, London and Newcastle-upon-Tyne, p. 424. 

 " Tin occurs as stream tin at the Great Letaba River and also in veins in the 

 granite which contains large orthoclase crystals." Whole reference. 



1189. Swinburne, U. P. Government tin prospecting in Transvaal. 



Mg. Journ. Rallw. Comm. Gaz., Vol. 83, 1908, London, p. 7. 



Extract from Government Gazette, November 29, 1907. Deposits located at 

 Zaaiplaats, 22 miles northwest of Potgietersrust. Ore occurs in: (a) more or less iso- 

 lated ore chutes or chimneys in the red granite, (b) pegmatites and coarse granite con- 

 taining large tin crystals, (c) alluvial or shed tin, probably derived from the rocks 

 referred to in (b). 



1189a. . The economic aspect of Waterberg tin field. 



South African Mg. Journ., Vol. 7, pt. 1, Nos. 337, 338, 1900, Johannesburg, pp. 

 69.5-699, 719-721. 



Describes various mines and reviews their prospects. 



UNITED STATES 



1190. Anonymous. Tin in America. 



Mg. Journ. Railw. Comm. Gaz., Vol. 58, 1.S8S, London, p. 384. 

 An enthusiastic outlook for American tin. 



1191. . Our tin mines. 



Eng. Mg. Journ., Vol. 54, 1892, New York, p. 98. 

 Editorial. Treats of tin mining in the United States. 



1192. . Tin mining in United States. 



Mg. Sci. Press, Vol. 82, 1901, San Francisco, p. 143, illus. 2. 



Tin deposits of Southern California and South Dakota are recorded as only deposits 

 in United States which might be made paying. Both are described, with brief history 

 of South Dakota tin boom, and unsatisfactory results. 



1193. . Tin in United States. 



Mg. Sci. Press, Vol. 87, 1903, San Francisco, p. 117. 



Brief outline of tin developments in Unilcd Slates. Deposits of York, Alaska, are 

 most promising, because unproven. The stone occurs there in abundance, though the 

 veins have not been explored. 



