40 BULLETIN 42, UNITED STATES NATIONAL MUSEUM. 



(25) Galena and pyrite, showing decomposition products, including stains of cop- 

 l)er. Ohio Mine, Little Cottonwood district, Salt Lake Conuty, Utah. (1473').) 



(•i()) Galena, crystallized, showing decomposition products, especially copper. Re- 

 bellion Mine, Pinyon Hill district, Summit Countj', Utah. (55351.) 



(z7) Galena, showing much decomposition, with heavy stains of copper. Rebellion 

 Mine, Pinyon Hill district, Summit County, Utah. (55346.) 



(28) Galena, much decomposed to cerussite, pyrite, and carbonates of copper. Nep- 

 tune Mine, West Mountain district, Salt Lake County, Utah. (.30065.) 



(29) Galena, much decomposed, showing crystals of cerussite. Rollins Mine, Lin- 

 coln district, Beaver County, Utah. (14672.) 



(30) Galena, much decomposed. Speckled Trout Mine, Flint Creek district, Deer 

 Lodge County, Montana. (11092.) 



(31) Galena, much decomposed, showing crystals of gypsum. Treasure Hill, White 

 Pine County, Nevada. (15281.) 



(32) Galena, showing decomposition through the sulphate to the carbonate and re- 

 taining the outlines of the original galena. Hidden Treasure Mine, Ophir district, 

 Utah. (11541.) 



(33j Galena, showing decomposition through the sulphate to the carbonate and re- 

 taining the outlines of the original galena ; shows crystals of sulphur ou the outside. 

 Horn Silver Mine, Frisco district, Beaver County, Utah. (55339.) 



(34) Galena, almost entirely decomposed and retaining the outlines of the original 

 galena. Comet Mine, Boulder district, Jefferson County, Montana. (10963.) 



(35) Cerussite, surrounding a small lump of unaltered galena. Raymond & Ely 

 Mine, Ely District, Lincoln County, Nevada. (15305.) 



(36) Cerussite, surrounding a very small lump of unaltered galena. Dixon Mine, 

 Bingham Canon, Salt Lake CoUnty, Utah. (14701.) 



(37) Auglesite, massive, showing the outlines of the original galena from which it 

 was derived by direct oxidation; shows carbonates of copper on the outside. Ray- 

 mond & Ely Mine, Ely district, Lincoln County, Nevada. (15307.) 



(38) Galena and tetrahedrite, in quartz, showing decomposition products, especially 

 carbonates of copper. Esmeralda Mine, Esmeralda, Nye County, Nevada. (15266.) 



(39) Galena, blende, and tetrahedrite, in quartz, much decomposed, showing especi- 

 ally the carbonates of copper. Emily Mine, Little Cottouwood district, Salt Lake 

 County, Utah. (14674.) 



(40) Cerussite, crystallized on limonite. Iron Mine, Leadville, Lake County, Colo- 

 rado. (5438.) 



(41) Cerussite, crystallized, very pure ; surface specimen. Bingham Canon, Salt 

 Lake County, Utah. (55376.) 



(42) Cerussite, crystallized in small crystals on massive cerussite. Morning Star 

 Mine, Leadville, Lalce County, Colorado. (32491.) 



(43) Cerussite, a few crystals on massive cerussite. Morning Star Mine, Leadville, 

 Lake County, Colorado. (65375.) 



(44) Cerussite, wholly massive. Morning Star Mine, Leadville, Lake County, 

 Colorado. (65376. ) 



(45) Cerussite, massive. Conly Mine, Eureka, <listrict, Eureka County, Nevada. 

 (15483.) 



(46) Cerussite, crystalline and somewhat impure. Vanderbilt Mine, Bingham dis- 

 trict. Salt Lake County, Utah. (147.50.) 



(47) Cerussite, crystalline and somewhat impure. Richmond Mine, Eureka dis- 

 trict. Eureka County, Nevada. (15.530.) 



(48) Cerussite, crystalline and somewhat impure. .1. J. Corrigau Mine, Eureka 

 district. Eureka County, Nevada. (15531.) 



(49) Cerussite, massive, impure. Evening Star Mine, Leadville, Lake Count.y, 

 Colorado. (32457.) 



(50) Cerussite, crystalline, iin[>uri'. Containing 50 per cent, lead and 75 ounces 

 silver. NianticMine, Lucien district. Bos Elder County, Utah. (17071.) 



