756 



REPORT OF NATIONAL MUSEUM, 181)7. 



Sternbergite. 

 Argentopyrite. 

 Frieseite. 

 Argyropyrite. 



Guanajiiatite. 

 Silaonite. 



Claustlialite. 



Tilkerodite. 



Zorgitti. 

 Tieinauuitc. 



Lehrbacliite. 

 Onofrite. 



Naumannite. 



Aguilarite. 



Berzelianite. 



Umangite. 

 Eucairite. 

 Crookesite. 



Altai te. 



llenryit«' 

 Colorado ite. 



Hessite. 



Stutzite. 

 Petzite. 



Sylvauitf. 



Krenueiite. 



Calaverite. 



Nagyagite. 

 Nobilite. 



Tetradymito. 



Josi'ite. 

 Melonite. 



Wchrlite. 



Group 12. 



AgFeaSs. 

 AgFe^iSs. 

 Ag,Fe..S«. 



AgiFevS;]. 



CLASS, — SELKNI))ES. 



Group 1. 

 BijSe:i. 



Group 2. 

 PbSe. 



HgSe. 



Hg(S,Se). 

 Group .'?. 



AgoSe. 



Ag.(S,Se). 



CujSe. 



(Cn,Ag),Se. 

 (Cu,TI,Ag),Se. 



CLASS, — TKLLUIUDES. 



Group 1. 

 PbTo. 



llgTe. 

 Group 2. 

 Ag.Te. 



(Ag,Au).2Te. 

 Group ,'?. 



(Aii,Ag)Tej. 

 (Aii,Ag)Te,. 

 (An.Ag)Te2. 



Group 4. 



Au,PbuSb:,(S,Te)24. 



Group -J. 

 BisTe^. 



Bi,(Te,S)3. 



Ni2Te,(?). 



Group 6. 

 AgBiyTerC?). 



OrtborLombic. 

 Orthoibombic. 

 Ortborbonibic. 

 Orthorhombic. 



Orthorboitibic. 



Isometric. 



Isoinetrif ; tt^trabedral, 

 (?) 



Isometric. 

 Isometric. 



(?) 



Isometric. 



(?) 



Isometric 

 (?) 



Isometric. 



(?) 



Monoclinic. 

 Ortborbombic. 

 Tricliuic (?). 



Ortlutrliombic. 



Hexagonal ; rbombobe- 

 dral. 



(?) 

 Hexagonal. 



(?) 



