150 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



SOUTH DAKOTA (Continued) 

 BECK, RICHARD. See No. 1299. 



989. BENEDICT, WAI. DE L. Prof. Vincent's estimates of possible profits of the 



Harney Peak tin mines (Dakota). 



Eng. Mg. Journ., Vol. 48, 1889, New York, pp. 358-359. 



A brief review and criticism of Prof. Vincent's report on the mine. 



990. . Tin in South Dakota. 



Min. Ind. for 1892, Vol. 1, 1893, New York and London, pp. 453-455. 



Short account of the discovery of tin and the early history of development. 



991. BLAKE, W(ILLIAM) P. The discovery of tinstone in the Black Hills of 



Dakota. 



Eng. Mg. Journ., Vol. 36, 1883, New York, pp. 145, 163-164, 344; Vol. 38, August 2, 

 1884, p. 69. 



Summary: Amer. Journ. Sci., ser. 3, Vol. 26, 1883, New Haven, p. 235. Same 

 material in Min. Res. U. S. for 1883-1884, U. S. Geol. Surv., Washington, D. C., 

 pp. 592-640. 



Reviews occurrence of tin in U. S. Special description of Black Hills occurrence. 

 Notes on foreign occurrences. A good paper. 



992. . Tin ore of the Etta mine, Dakota. 



Eng. Mg. Journ., Vol. 38, 1884, New York, p. 69. 



An addition to author's article of September of year before. The accompanying 

 minerals are named and briefly described. 



993. . Columbite and tantalite with the tin ore of the Black Hills. 



Eng. Mg. Journ., Vol. 38, 1884, New York, p. 376. 



Interesting communication explaining the difficulty occasioned by Prof. Schaeffer's 

 analysis of a sample sent to him for examination. It was not sent as tin ore, but as 

 a specimen to be analyzed, the nature of which the superintendent wished to know. 

 It was analyzed as tantalite and from this went abroad the report that there was no 

 tin ore, but tantalite, in the Black Hills. 



994. . Tin ore in the Black Hills, Dakota. 



Min. Res. of U. S. 1883-1884, U. S. Geol. Surv., 1885, Washington, D. C., pp. 602-613. 



Treated under following subjects: 



The discovery of tin at the Etta mine; geological horizon; development work at the 

 Etta mine; concentric structure of the Etta vein; varieties of ore at the Etta claim; 

 greisen rock carrying tinstone; percentage of tin in the greisen; Bob Ingersoll claim; 

 western slope of Harney range; tin discovered at Dogtown; area of the tin region; 

 stream tin in Dakota. An excellent account of the geology and development of the 

 Black Hills tin district. 



995. . Tin ore veins in the Black Hills of Dakota. 



Trans. Amer. Inst. Mg. Eng., Vol. 13, 1885, New York, pp. 691-696. 



Digest: Oest. Zeitschr. Berg. Hiitt., Vol. 33, 1885, Wien, p. 302. 



Treated under: Structure of the Etta vein; percentage of black tin in the ore; 

 minerals associated with the tin ore; extent of the tin region; contemporaneous 

 origin of the ore and rock. 



996. . Tantalite and columbite in the Black Hills of Dakota. 



Trans. Amer. Inst. Mg. Eng., Vol. 13, 1885, New York, pp. 696-697. 



" There are two localities where the mineral (tantalite or columbite) is found in 

 the same dike or vein as the cassiterite: (1) at the Etta mine; (2) at the Bob 

 Ingersoll claim." 



Gives observations upon the occurrence of the minerals with the tin ore. States 

 that one mass of columbite or tantalite from the Ingersoll claim weighed approxi- 

 mately, 2000 pounds. (Digest by Cleophas C. O'Harra.) 



