L. W. MceCay—Massive Safflorite. 873 
Hviding each percentage by the proper atomic weight we 
ain: 
As 5 dese tae serra he Yen 70°36 + 75 — 0'938 
Pie Neches deals seeps isin ie A 0°90 -- 32 — 0°028 
SEE aon REL Ae EO 18°58 + 59 = 0.314 
RR eS eee ‘492 
sg NAME Ns Pra 9°51 + 56 = 0°169 9 
Cu PEEPS ete ABN 2g esas 0°62 + 63 = 0°009 
MW eo ee ee tr 
99°97 
To form RS? 14 atoms of RB are necessary. Subtracting this 
4mount from 492 we obtain: 
478°:\9388 = 1: 3°96 
é = rea 
Hence the formula is: 
w (RS*) sis 
se re | R=Co, Fe and Cu. 
My analysis of schlackenkobalt agrees in a most peculiar way 
With the analysis of a mineral from Schneeberg which w 
€xamined by Von Kobell* and called by him eisenkobaltkies. 
In order that a comparison can be readily made, I here place 
the two analyses along side of each other : 
Von Kobell (Schneeberg). McCay (Schneeberg). 
p. gr. 6°95 Sp. gr.=7°167 
Crystallized. Massive. 
pole hauingte des. 71°08 a Sab rape ages: 70°36 
ff Re ean siete 18°48 Co 18°58 
RO be el a 9°44 Sy eae eS eo 9.51 
Mises none ee as none 
Oe ae. 1 BL ee 0°62 
5 2 5 Sagal eee ES 1-00 a ia ee r 
100°00 99°97 
It will be seen that the quantity of cobalt in the schlacken- 
kobalt is identical with the amount of iron in the eisenkobalt- 
es and that the quantity of cobalt in the eisenkobaltkies is 
is is'certainly most remarkable! Can 
chance? _I think not; I am inclined to believe that Von Kobell 
* Von Kobell: Griind. Min., 1838, S. 360. 
