CATALOGUE OP MINERALS. 



System of 

 crystallizalion. 



81. Covelline 



82. Molybdenite * 



83. Riolite 



84. Skutterudite 



€uS2 

 MoS' 



AgSe2 



4. Skutterudite Division. 

 ' CoAs» 



6 

 6 

 6? 



II. DOUBLE BINARY COMPOUNDS. 



1. The Persulphuret a Sulpliuret of an Element of the 

 Hydrogen Group, as of Iron, Cobalt, or Nickel. 



85. Llnnceite* CoS + Co^S» J 



Cu S 4- Fe^ S3 1 



€u S + Fe2 S3 2 



2€u S + Fe2 S3 2 



86. Cuban 



87. Chalcopyrite * 



88. Barnhardite * 



I 



89. Tin Pyrites 



90. Sternbergite 



€u S (Sn^ S3, Fe^ S3) 

 AgS4-2Fe^S3? 



2? 

 3 



2. The Persulphuret a Sulphuret of Elements of the 

 Arsenic Grouji. 



€u S + Sb^ S3 



91. Wolfsbergite 



92. Tannenite 



93. Berthierite 



94. Zinkenite 



95. Miargyrite 



96. Plagionite 



97. Jamesonite 



98. Heteromorphite 



99. Brongniardite 

 100. Chiviatite 



€uS + Bi'S3 

 Fe S + Sb2 S3 

 PbS4-Sb2S3 ■ 

 Ag S 4- Sb^ S3 

 Pb S + |Sb2 S3 

 PbS + ISb'^Sa 

 PbS-f iSb^Ss 

 (Pb,Ag)S+iSb2S3 

 (€u,Pb)S + |Bi2S» 



3 



3f 



3 

 4 

 4 

 3 



