wherry: sulfide minerals 493 



NON-CRYSTALLIZED GROUP New. 



Umangite CusSci 



Rickardite Cu4Te3 



Kalgoorlite (Ag,Au,Hg)3Te-2 Homogeneity uncertain. 



I : I DIVISION New; part of Dana's "monosulfides. . ." 



GALENiTE GROUP. ISOMETRIC. . .Part of Dana's "galena group." 



J Meteoritic, placed by Dana after sphalerite 



^1<^^^^*« C^S 1 group, but not tetrahedral. 



Galenite PbS "Galena." 



f Includes "zorgite" (Dana No. 52), an im- 

 Clausthalite PbSe [ ^^^^ ^^^^ 



Altaite PbTe 



I Placed by Dana after sphalerite group, but 

 Pentlandite xFeS.j'NiS i not tetrahedral; regarded as an iso- 



[ morphous series; end-members unknown. 



SPHALERITE GROUP. ISOMETRIC- 

 TETRAHEDRAL. 



Sphalerite ZnS "Cleiophane." 



Cadmiferous var(Zn,Cd)S "Przibramite." 



J "Blende;" includes "marmatite," "cristo- 



Ferriferous var. . (Zn,Fe)S 1 i-. ... u- u • • *• 



^ ' ' [^ phite, etc., high-iron varieties. 



Metacinnabarite HgS 



Tiemannite HgSe 



Alabandite MnS 



I Dana's "cinnabar-wurtzite-millerite group" 

 covELLiTE GROUP. HEXAGONAL. *j is here separated into several on the basis 



[ of crystallization. 

 Covellite CuS 



_ I Meteoritic ; owes its i : i ratio to its forma- 



Troilite FeS 1 *• • .^u f 



[ tion in the presence 01 excess iron. 



Niccolite NiAs 



Arite xNiAs.yNiSb An isomorphous series. 



Breithauptite NiSb 



WURTZITE GROUP. HEXAGONAL- 

 HEMIMORPHIC. 



Wurtzite ZnS 



Manganiferous J "Erythrozincite;" distinctness affirmed by 



var (Zn,Mn)S \ Murdoch, op. cit., p. 148. 



Greenockite CdS 



MILLERITE GROUP. TRIGONAL- 

 RHOMBOHEDRAL. 



Millerite NiS Includes "beyrichite" (Dana No. 76). 



