546 
Luigi Bombicci 
GRUPPO III. R* S 3 
la 100 molecole di minerale ne sono: 
/STI BINA . . 
. 100 Sò 2 S 3 . 
x 1 
i ORPIMENTO . 
. 100 As*S\ 
! 
BISMUT1NA . 
. 100 fli 2 S 3 . 
w 
O 1 
BERTHIERITE 
. 75 S6 2 S 3 ■+• 25 fe S 2 . 
B 
TANNEN1TE . 
. 51 Bt* 5 3 ■+■ 49 Cu 2 S . 
^CHIVIATITE . 
. 56 J5» 2 5 3 -H32PbS, 8Cu 2 S, 4feS 2 . 
l 
Appendice 
s 
a 
LAURITE . . 
. 90 Bu 2 S 3 -l-10OsS*. 
GRUPPO IV. R S 2 
’S 
fa 
© 
s 
e 
z 
s 
g, /PIRITE . . . .100 FeS 2 . 
g l PER ROCOBALTINA 31 Fe S 2 -+- 30 fe As 2 ,26 Co S 2 , 13 fe 2 As 3 . 
a K-OBALTINA . . 68 CoS 1 -t- 30Co 2 As 3 , 6 fe 2 As 3 , 6 As 2 S 3 . 
£)CARROLLlTE. . 68 CoS? + 20CoS, 16Cu 2 S, 3feS 2 , 3-NiS 2 . 
à.f HAUERITE. . . 100 MnS*. 
É= \CLLMANNITE. . 62 FiS 2 -h 48 Ni As 2 . 
I 
1 
fa 
X 
g /MARCASITA . . 100 Fe S^. 
èj MISPICHEL . . 59 FeS 2 -H 39fe 2 As 3 -H 2 AsS 3 . 
c^VGLAUCODOTO . 44 Co &-+- 11 CoS -f-11 Co As 2 + 34fe As 2 . 
s 
È 
£ 
I(calcopirite . { llZCfZt: 
k 
«: 
: 
u 
MOLIBDENITE . 100 MbSK 
