Beräkning af sammansatta ämnens egentliga l'igler. 313 



Beräkn. Iakttagna: 



Heteromorphit Pb'' öb 5,67i 5,67 • • ■ 5,9. 



Jamesoiilt rb' öb" 5,524 5,5 ... 5,7. 



Plaaionit Pb''Öb^ 5,46i 5,4. 



O 



Ziiikenit Pb Öb 5,si8 5,3 ... 5,35. 



Skleroklas Pb^As 5,ii6 5,39 ...5,55. 



Miargyrit Ag Sb 5,333 5,3 ... 5,4. 



/// 



Pyrargyrit Ag^ Sb 5,903 5,75 • • • 5,85. 



Proustit Ag* As 5,713 5,5 . . • 5,6. 



/// 



Melan glans Ag' Sb 6,212 6,2 ... 6,3. 



Wolfsbergit €u Sb 4,692 4,748. 



Towanit 4111 Fe 4,285 4,i ... 4,s. 



Fe(3, Fe«, Coji, Coa, Ag^: 



Svafvelkis Fe 4,962 4,9 ... 5,i (Pyrit); 



4,65 • • • 4,9 (Markasit). 



Arsetiikkis Fe + Fe As 5,8i7 6,0 ... 6,j. 



Roboltglaiis Co + Co As 6,029 6,0 ... 6,1. 



Smal till Co As 6,570 6,j ... 6,6. 



Skullerudit Co As" + Co As 6,991 6,74 . . . 6,84. 



Diskrasit Ag* Sb 9,449 9,4 ... 9,8. 



Ray, Naj-: 



Svafvel-kaliuin Ka 2,399 2,ijo Filhol. 



