APPENDIX IX. 



Lists of Ditplioate Spp^cimens Prepared for Distribution 

 TO Educational Establishments since 1890.' 



Within the past five years collections of minerals, fishes, casts of 

 prehistoric implements, rocks and ores, and marine invertebrates have 

 been distribnted among a limited number of educational establish- 

 ments in the United States. Although numerous applications from 

 high schools and the smaller colleges have been received, it has been 

 found necessary, as a rule, to decline compliance. It is hoped, how- 

 ever, that before many years the Museum will be enabled to separate the 

 duplicate material m all of its departments and make it up into sets. 

 When this has been done, it will doubtless be possible to extend the 

 scope of distribution so as to include those grades which have not 

 hitherto been supplied. 



Labkls fok Duplicate Minkhals Distributed isv the Smitiisoniax Institu- 

 TKJN ON Behalf (jf the National Museum. 



[Prepared nuder the direetion of Prof. F. AV. Clarke, Honorary Curator, Department of ^[inerals. | 



Native Sulphur [S]. 

 fCry.stallization— Orthorhoinl)ic.] 



Humboldt County, Nev. 1 



SiDERiTE OR Spathic Ikon [FeCOs]. 

 [Crystallization— Ttbombohedi'al.] 



Germany. 2 



Galena LPbS]. 

 [Crystallization— Isometric. ] 

 Calcite, CaCOa, is associated with galeua in this 

 sijecimen. 



Pego Mine, Portugal. 3 



Sphalerite or Zinc Blende [ZnS]. 

 [Crystallization — Isonietrie.] 

 This specimen of granular sphalerite contains 

 pyritc, FeSa, as an inclusion. 



Friedensville, Pa. i 



Halite or Eock Salt [KaCl]. 

 [Crystallizatitm — Isometric.] 

 Rio Virgin Mine, Lincoln County, Nev. 5 



Chalcopvrite [CuFeS^I- 

 [Crystallization — Tetragonal. J 

 This specimen contains a small quantity of 

 nickel, probably as sulphide, and is used as an 

 ore of nickel. 



Norway. 6 



Pyrargyrite [Ag3SbS:j]. 



[Crystallization — Rhombobedral.l 



Though the body of this specimen is (quartz, 



SiOj, it contain.s enough of the pyrargyrite, with 



its associate, proustite, AgjAsSa, to make it a 



valuable ore of silver. 



Manhattan Mines, Lander (^)unt.y, Nev. 7 



Garnet [AloR";,(Si04)3]. 

 [Crystallization — Isometric.] 

 In this siiecimen massive garnet is associated 

 with ampbibole, R"Si03. 



Trotter Mine, Franklin, N. J. 8 



Magnetite [FeaOj]. 

 [Crystallization— Isometric] 



Paisborg, Sweden. a 



1 Tlio majority of the collections contained only a portion of tlio specimen,s indi- 

 cated npon these lists. 



275 



