32 COLORADO FERBERITE AND THE WOLFRAMITE SERIES. 



Analyses of minerals of 



68 . Ferberite from Limoges, probably from Puy-lee- Vignes. (See Lacroix, A . , Minera' 

 logie de la France et de ses colonies, vol. 4, pt. 1, p. 285, footnote, 1910.) Ebelmen, 

 J. J., Note sur la composition du wolfram: Annales des mines, 4th ser., vol. 4, p. 407, 

 1843. 



69. Ferberite from Traversella, Italy. Bernoulli, F. A., Ueber Wolfram und 

 einige seiner Verbindungen: Poggendorf's Annalen, 4th ser., vol. 21, p. 603, 1860. 



70. Ferberite from Nagpur district, India. Analysis by Carnegie Steel Co. Quoted 

 by Fennor, L. L., Note on an occurrence of wolfram in the Nagpur district, Central 

 Provinces: India Geol. Survey Records, vol. 36, pt. 4, p. 309, 1908. 



71. Ferberite from Estremadura, Spain. Analysis by Truchot quoted by Mennicke, 

 Hans, Die Metallurgie des Wolfram, p. 18, 1911. 



72. Ferberite from Inverell, County Gough, New South Wales. Liversidge, A., 

 The minerals of New South Wales, p. 85, 1888. 



73. Ferberite from Grube Meiseberg, Neudorf, Harz Mountains, Germany. Schnei- 

 der, R., Ueber die chemische Constitution des Wolfram-Minerals: Jour, prakt. Chemie, 

 vol. 49, p. 334, 1850. 



74. Ferberite from the Bismuth mine, Torrington, New South Wales. Analysis 

 by H. P. White quoted by Came, J. E., The tungsten mining industry in New South 

 Wales: New South Wales Geol. Survey Min. Res. No. 15, p. 70, 1912. 



75. Ferberite from Gordon Gulch, Boulder County, Colo. Analysis quoted as 

 having been made by the Colorado Tungsten Corporation. George, R. D., The main 

 tungsten area of Boulder County, Colo.: Colorado Geol. Survey First Rept., p. 43, 

 1909. 



76. Ferberite from Grube Meiseberg, Neudorf, Germany. Schneider, R., Ueber 

 die chemische Constitution des Wolfram-Minerals: Jour, prakt. Chemie, vol. 49, p. 

 334, 1850. 



77. Ore from Beaver Creek, Boulder County, Colo. Analysis given by Greenawalt, 

 W. E., The tungsten deposits of Boulder County, Colo.: Eng. and Min. Jour., vol. 

 83, p. 951, 1907. The analysis also gives: Gold, trace; silver, 1.2 ounces to the ton. 

 The item given under Si0 2 is designated in the original as "Si." 



78. Ferberite from Cave Creek, Maricopa County, Ariz., U. S. Nat. Mus. catalogue 

 No. 87283. Analysis by Edgar T. Wherry. The mineral is black and opaque. The 



