24 SMITHSONIAN MISCELLAjSTEOUS COLLECTIONS VOL. 58 



ALASKA (Continued) 

 28a. . York tin mines. 



Northwest Mg. Journ., VoL 7, 1909, Seattle, p. 79. 



" A short historical review of the prospecting' and developirent of the placer 

 tin deposits of Seward Peninsula, Alaska." 



28b. Jacobs, E. Alaskan Mineral Exhibit at A.-Y.-P. exposition. 



Kng. Mg'. Journ., Vol. 88, 1909, New York, p. 409. 



The exhibit of tin ores, placer and lode, is believed to be the largest purely 

 American production ever made on this continent. Quotes Adolph Knopf as saying 

 that up to close of 1908, the total production of the Seward peninsula tin region 

 was 160 tons of cassiterite concentrates, all of which except a few tons from lode 

 deposits, came from the placers of Buck Creek. 



29. Knopf, Adolpii. The Seward Peninsula tin deposits. 



U. S. Geol. Surv. Bull. 34.5, 1908, Washington, D. C, pp. 17. 



" This paper summarizes the result of the geologic investigations which have 

 been carried on in the Seward Peninsula since the close of 1906. The known 

 Alaskan tin deposits that are of a character sufficiently encouraging to warrant 

 prospecting, are limited to the extreme western part of Seward Peninsula, and are 

 embraced in an area of about 400 square miles." 



29a. . Geology of the Seward Peninsula tin deposits, Alaska. 



IT. S. Geol. Surv., Bull. 3.j8, 1908, Washington, D. C, pp. 71, pis. 9. (Including map 

 of western end of Seward Peninsula) and figs. 7. 



Describes the geology and mineralogy of the tin depr«its of Seward Peninsula, 

 Alaska; mining operations and development; and two new tin-boron minerals, 

 hulsoite and paigeite. 



29b. . Some features of the Alaskan tin deposits. 



Econ. Geol., Vol. 4, 1909, Lancaster, pp. 214-223. % 



Abstract: Mg. World, Vol. 30, 1909, Chicago, pp. 969-971. 



Describes especially the occurrences of tin minerals at Ears Mountain and Lost 

 River, and the occurrence of two new magnesian iron-tin-boron minerals, hulseite 

 and paigeite at Ears Mountain. Stannite occurs at Lost River in an argentiferous 

 vein. Metasomatic replacement lias taken place with little regard to the nature 

 of the country rock. 



30. Newi.ano, D. H. Tin. 



Min. Ind. for 1902, Vol. 11, 1903, New York and London, p. 587. 



Buck and Fillery creeks mentioned as containing alluvial tin. In the latter 

 locality, the w.n.sh is about 16 inches in depth, and carries about S pounds of 60 per 

 cent cassiterite to the cubic yard. 



31. . Alaska tin. 



Min. Ind. for 1903, Vol. 12, 1904, New York and London, pp. g>6-327. 



The discovery of lode tin in the Lost River district, about 30 (sic) miles east of 

 Capo Prince of Wales, reported. It occurs in a dike of granite intersecting lime- 

 stone. The description of tin ore and its occun-ence is taken fiom A. J. Collier's 

 report, U. S. Geol. Surv. Bull. 225, 1904, Washington, D. C, pp. 154-167. 



Ohly, J. See No. 1215. 



32. Pavlov, A. W. Ueber die primaren Zinnlagerstatten in Alaska. 



Bull. Mines Indust. or. No. 2, Bd. 2, 1905, Tomsk, map 1. 



Written in Russian. This description is based on A. J. Collier's articles. 



33. RicKARD, Edoar. Tin deposits of the York region, Alaska. 



Eng. Mg. Journ., Vol. 75, 1903, New York, pp. 30-31. 

 Describe the geology of the region and occurrence of tin. 



