Sulle associazioni poligenjche ecc. 
545 
Segue GRUPPO II. R S 
1 
a 
£ 
In 100 molecole di minerale ne sono: 
CINABRO . . .100 HgS. 
GREENOK.ITE. . 100 CdS. 
COVELLINA . * . 100 CtiS. 
PIRROT1NA . . 89 FeS 4- 11 fe S 2 . 
MILLER ITE . .100 Ni S. 
# 
i 
1( 
jNAGYAGITE . . 55 PbS 37Te, SAn*Te 5 , 2Cu*S, Ag’Te. 
m 
/KILBRICHENITE. 84 Pb S + 2 fe S 2 , 14 Sb 2 S 3 . 
/ GEOCRONITE. . 78 PbS 2feS 2 , 3Cu 2 S, 17 (Sb As) 2 S 3 . 
IbOULANGERITE. 72 PbS 28 Sb S 3 . 
2 } JAMESONITE . . 52 Pb S -t-11 fe S 2 , Cu 2 S, 36 Sb 2 S 3 . 
^ < ETEROVIORFITE. 5t PbS-h 12 fe S 2 , 2 Cu 2 S, 6 Zo $, 29 Sb 2 S 5 . 
.§• j BOÙRNONITE . 50 Pb S + 25 Cu 2 S, 25 Sb 2 S 3 . 
^ f Z1NCHENITE . . 50 Pb S + 50 Sb 2 S 3 . 
ACICOLITE . . 48 PbS ■+■ 28Cu 2 S, 24 Sb 2 S 3 . 
BRONGNIARTITE 32 PÒ$-+-32Ag 2 S,2feS 2 ,Cu 2 S,ZnS,32Sb 2 S 3 . 
M»n»cli..i 1 
73 ( PLAGION1TE . . 56 PbS + 44 Sb 2 S 3 . 
£ (FREISLEBENITE. 39 PbS-h 27 Ag 2 S, 5 (feS 2 ,C» 2 S), 29 Sb 2 S 5 . 
REALGAR ... 100 AsS. 
Appendice 
K0BELL1TE . . 54 PbS-h 18feS 2 , Cu 2 5, 27 (SbBi) 2 $ 5 . 
69 
