NO. 2 BIBLIOGILVPIIY OP TIN — HESS 45 



BOLIVIA (Continued) 



182. Stelzner, Alfred "W. Zinnerzlagerstatten von Bolivia. 



Zeitschr. deutsch. peol. Ges., Vol. 44, 1802, Berlin, pp. 531-533. Also, Zeitschr. 

 piakt. Gcol., 1893, Berlin, pp. 81-82. 



Digest: Min. Mag. Journ. Min. Soc, Vol. 10, 1893, London, pp. 2GV262. 



Digest: Neues Jahrb. Min., 1893, 11 (Ref.), Stuttgart, p. 81. 



" Tin ores in South American Cordilleras are restricted to a zone exlendiiisr from 

 the 15th to the 21st degree of latitude. In paragenesis and mode of occurrence 

 they offer a remarkable contrast to the tin ores of other countries. The ore is 

 seldom in crystals but usually crypto-crystalline, kidney-shaped, or compact. The 

 usual tourmaline, topaz, fluorite, apatite, etc., are almost entirely absent. Instead 

 of these the tin ore is accomp.inied by stannite and other sulpliides. Frequently 

 the tin is restricted to the upper portien of a vein, its place being taken lower 

 down by argentiferous fahlerz, pyrite, and (locally) galena and zinc blende. In 

 its geological occurrence, the tin ore is remarkable, occurring in association, not 

 with granite, but with trachytes and andesites referred to a late Cretaceous or early 

 Tertiary age." 



183. . Die Silber-Zinnerzlagerstatten Bolivlas. 



Zeitschr-. deutsch. geol. Ges., Vol. 40, 1897, Berlin, pp. 51-142, map and 

 bibliography. 

 Kin Beitrag zur Naturgeschichte des Zinnerzes. 

 Review: Neucs .lahrb. Min., ISO], I (Ref.), Stuttgart, pp. 481-483. 



. See No. 1642. 



184. Wendt, a. F. The Potosi, Bolivia, silver-district. 



Trans. Anier. Inst. Mg. Eng., Vol. 19, 1801, New York, pp. 90-91. 



" An almost constant accompaniment of the silver ores of Potosf, and of a 

 great many of the silver ores of the plateau of Bolivia, is binoxide of tin, in the 



shape of gray or yellow oxide. Some of the silver veins are very rich in the 



oxide of tin, notably so the Tajo-polo and the Veta Estafio, which was named 

 after its contents of tin." 



Tlie country rock is rhyolite. 



BURMAH 



185. Anonymous. Maliwan tin mines [Mergui district]. 



Ind. Eng. July 20, 18S9, Calcutta, pi. 1. 



Reprint: Eng. Mg. Joiirn., Vol. 48, ISSO, New York, p. 182. 



Digest: Proc. Inst. Civ. Eng., Vol. 98, pt. 4, 1880, London, pp. 468-469. 



Description of the almost deserted tin mines of Mergui, near Renaung. Veins 

 of tin-sand are found at the surface, mined in open workings by shallow pits from 

 10 to 12 feet deep. Sand is raised by ladders from the mines and washed. Two 

 smelting furnaces are situated at Maliwan. Output per day is 15 to 16 blocks 

 of tin of 106 pounds each, bringing about Rs. 60 at Penang. 



186. . Tin in Burmah. 



Min. Ind. for 1900, Vol. 9, 1001, New York and London, p. 639. 



187. . Tin in Burma. 



Mg. World, Vol. 24, 1906, Chicago, p. 96. 



Tin occurs in alluvial deposits all along the vsatcr courses, covering an area 

 nearly 200 miles in length, by an average breadth of 40 miles. At Maliwan both 

 vein and alluvial tin mining is carried on. 



