NO. 2 BIBLIOGRAPHY OF TIN — IIESS 57 



CHINA (Continued) 

 269. PanSiNee, Hofratii. Beitrage zu einem Handbuche der Mineralogie des 

 chinesischen Reichs. 



Tasch. Rcs. Min., Vol. 12, IT, ISIS, Frankfurt-am-Main, pp. 415-416. 

 Treats briefly of tin and its occurence in China. 



269a. Willis, Bailey. Mineral resources of China. 



Econ. Geol., Vol. 3, 190S, Lancaster, p. 120. 



At present mining and smelting of tin are the most important industrial devel- 

 opments of Yunnan. Sletal occurs in veins, no alluvial deposits. Occurs always in 

 red clay, contained sometimes in fissures of limestone, sometimes in the neighbor- 

 ing accumulations of soils. Resources of district in tin cannot easily be estimated. 

 Deposits liable to run out suddenly. Difficult to define probable depth. Production 

 limited bv small amount of available water. 



COLORADO 



270. Emmons, S. F. Geology and mining industry of Leadville, Colo. 



Monogr. U. S. Geol. Surv., Vol. 12, 1886, Washington, D. C, p. 377. 

 " Tin, indium and cadmium have been detected in furnace products." 



271. Stevens, R. P. On the San Juan Mountains of Colorado. 



Trans. New Yoik Acad. Sci., Vol. 5, 1886, New York, p. 128. 



States that tin has been found in Colorado. Gives no locality or autlmrity. 



CONGO 



272. Barrat, Maurice. Sur la geologie du Congo Frangais. 



Ann. Mines, ser. 9, Vol. 7, 1895, Paris, p. 459. 



" On soupgonne depuis longtemps la presence de I'etain dans le massif cristallin 

 qui apparait sur la c6te occidentale d'Afrique, et M. Mizon a rficemment attire I'atten- 

 tion sur I'etain de la Benouf, qui est I'objet d'un traflc considerable. Dans notre 

 colonie, on n'a encore signale que des traces de cassiterite dans les monts de Cris- 

 taL" Whole reference. 



273. BuTTGENBAcH, H. L'avenir industriel de I'etat independant du Congo, 



Rev. Univ. Mines, Met. Trav. Publ. Sci. Arts Appl. Indust., ser. 4, Vol. 14, 1906, 

 Liege and Paris, pp. 140-141, map and fig. 

 Taken from No. 274. 



274. . L'avenir industriel du Katanga. 



1906, Bmssels, p. 21, 120 words. 



Twenty thousand tonnes of tin said to be in sight in alluvial deposits, a short 

 distance from navigable waters of the Lualaba. 



275. . La cassiterite du Katanga. 



Ann. Soc. geol. Belg., Vol. .3.3, 1906, Liege, pp. M40-M52, figs. 2. 



Digest translation: Trans. Inst. Mg. Eng., Vol. S3, 1908, London and Newcastle- 

 upon-Tyne, pp. 722-723. 



Cassiterite occurs in nearly vertical lodes at the junction of a massif of pegmatoid 

 granite with tourmaline quartzites, mica schists, etc. Gold and copper deposits 

 occur not far away. Stanniferous area is rugged and veins sometimes crop out in 

 the ravines, but are usually hidden by debris containing cassiterite pebbles up to 

 several pounds in weight, which are frequently well crystallized. 



