386 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 58 



VIRGINIA 



1239. Benedict, Wm: De L. Tin in Virginia. 



Min. Ind. for 1892, Vol. I, 1893, New York, pp. 455-456. 



Tin known to exist in Virginia about ten years. Found on Irish Creek, Rockbridge 

 County. Ore found in veins in granite. Three veins thus far discovered. Develop- 

 ments consist of open cut extending about 60 feet into face of hill, and a tunnel 

 which penetrates some 40 feet further. Mill has been erected, and experimental tests 

 of ore were made. 



1st test: 90 tons assayed 3.44 per cent metallic tin; concentrates from which 

 assayed 43.44 per cent tin. 



2d test: 75 tons assayed 3.28 per cent tin, concentrates showing 40.40 per cent tin. 



3d test: 125 tons ore, assayed 3.26 per cent tin, concentrates gave 45.07 per cent tin. 



1240. Brown, W. G. On cassiterite from Irish Creek, Rockbridge Co., Virginia. 



Amer. Chem. Journ., Vol. 6, 1885, Baltimore, pp. 185-187. 



The veins have not been prospected to more than 20 feet in depth, and are much 

 weathered. The cassiterite is brown, from waxy to dark, and the faces are generally 

 dull. Wolframite, arsenopyrite, quartz and mica accompany the cassiterite. Gives a 

 description of crystals and an analysis which shows nearly 0.3 per cent Ta^O^. 



1241. Campbei-l, Hakry D. Tin ore (cassiterite) in the Blue Ridge in 



Virginia. 



The Virginias, Vol. 4, 18S3, Staunton, p. 1.51. 



Abstract: Amer. Journ. Sci. Arts, ser. 3, Vol. 27, 1884, New Haven, p. 411. 

 Note on the discovery of tin in eastern corner of Rockbridge County. Cassiterite 

 occurs in quartz veins. Incomplete analysis given. 



1242. Crookes and Roeiirig. Tinstone, cassiterite. 



The Virginias, Vol. 4, 1883, Stnuntnn, p. 169. 

 Extract from Crookes & Rochrig's Metallurgy. 

 Short general article. 



Gakrison, F. Lynwood. See No. 1207. 



1243. McCreath, A. S., and Platt, Franklin. Description of locality of tin 



ore, Rockbridge Co., Virginia. 



The Virginias, Vol. 4, 188.3, Staimton, pp. 150-151. 



Not sufficient prospecting had been done to give a good idea of the veins. They 

 occur in crj'stallines beneath Potsdam No. 1. The ore taken out probably averaged 

 31.60 per cent tin. 



1244. Robertson, W. B. On Virginia tin mines. 



Mg. Journ. Railw. Comm. Gaz., Vol. 54, 1884, Ix)ndon, pp. 1221-1222. 



Deposits are in high ridges on both sides of Irish Creek, in Rockbridge County. 

 Ore occurs in the form of a " pure and rich cassiterite " permeating quartz veins 

 and mica slate to a width of 40 feet or more. Many crystals are also found. Gives 

 description of the tin veins and outcrops of the district. 



1245. Ulke, Titus. Cash Mine, near Vesuvius, Virginia. 



Min. Res. U. S. Geol. Surv., ia93 (1894), Washington, D. C, pp. 178-182. 



Development of property hindered by j'ears of litigation. In writer's judgment 

 Cash property warrants development. Mill, said to have cost $50,000, was erected on 

 property several years ago, and about 290 tons of rock, averaging about 3.3 per cent 

 metallic tin were tested. Mineral association and geological occurrence of tin here 

 more closely resembles that of Cornwall than that of any other known tin locality in 

 United States. 



