NO. 2 BIBLIOGRAPHY OF TIN HESS 119 



MASSACHUSETTS (Continued) 



750. TESCHEMACHER, J. E. Description of the oxide of tin found at the tour- 



maline locality, Chesterfield, Mass. 



Report Association American Geologists and Naturalists, 1840-1842 (1843), Boston, 

 pp. 296-297. 



A. A. Hayes, to whom a portion was submitted for examination, says: " From 

 these experiments it appears that the mineral is a nearly pure oxide of tin, its hard- 

 ness and closeness of texture, as indicated by its high lustre, exceed those of any 

 specimen I ever examined." 



MEXICO 



751. AGUILERA, JOSE G. Bosquejo geologico de Mexico. 



Bol. Inst. Geol. Mexico, Nos. 4, 5, 6, 1897, Mexico, pp. 234-235. 



A note in which he states that tin ore occurs in small veins in rhyolite, accom- 

 panied by hematite, topaz, and durangite. Rhyolites of Upper Tertiary age. 



752. . Catalogos sistematico y geografico de las especies mineralo- 



gicas de la Republica Mexicana. 



Bol. Inst. Geol. Mexico, No. 11, 1898, Mexico, pp. 83-84. 



Tin is found in the following states: Aguas Calientes, Guanajuato, Jalisco, Queretaro, 

 Sonora, Durango, Hidalgo, Puebla, San Luis Potosi, Zacatecas. 



753. . Geographical and geological distribution of the mineral de- 

 posits of Mexico (tin). 



Trans. Amer. Inst., Mg. Eng., Vol. 32, 1902, New York, pp. 506-507. 

 " The tin deposits of Mexico are of two classes: Those of the Tertiary, and the 



alluvial placers of the Quarternary In Mexico the characteristic association 



of minerals and rocks is, so we might say, that of the latest tin-veins of the Tertiary, 

 in which are found crystallized hematite, topaz and in some cases wolframite and 

 durangite. The associated rocks are Pliocene rhyolites and rhyolitic tufa." 



754. ALLEN, D. K. Tin in Baja California, Mexico. 



Mg. Journ. Railw. Comm. Gaz., Vol. 54, 1884, London, p. 3194. 



Gives an account of a piece of cassiterite weighing 314 pounds broken from ledge, 

 brought in by Indians, source unknown. Another vein said to give 18 to 38 per cent 

 tin from picked samples. Pay streak 2 to 4 feet wide. Found in same range or 

 belt 'with same formation as that of the Temescal (Cal.), tin mines. 



755. ANONYMOUS. Tin deposits of Mexico. 



Mg. Journ. Railw. Comm. Gaz., Vol. 54, 1884, London, p. 1412. 



Deposits occur at small town of Coneto, about 90 miles northwest of Durango. Ore 

 is principally red and black cassiterite of extreme purity, found both in veins and 

 placers. " Sulphuret of tin," similar to that of Cornwall has been found in one part 

 of the mountains, while arseniate of tin, also very finely divided red ophite of tin, are 

 found in many veins. 



756. . Tin deposits of Durango, Mexico. 



Eng. Mg. Journ., Vol. 48, 1S89 ? New York, p. 80. 

 Describes briefly the tin deposits near Coneto, Durango. 



757. . Mines in the State of Guerrero, Mexico. 



, Mg. Journ. Railw. Comm. Gaz., Vol. 76, 1904, London, p. 556. 



Extract from Bull. Official Ministerio de Fomento. In describing the mines in the 

 district of Taxco, tin is mentioned as occurring at Acamistla and Coapango. 



