380 Reéramination of American Minerals. 
4A. Apophyliite. 
The specimen of this mineral examined, came from Lake Su- 
perior. It is eminently lamellar in its structure, and was placed 
in my hands as being possibly diaspore; its lustre is however 
much more pearly than this latter mineral. Its sp. grav. is 2:37, 
and its constitution, 
Silica, ' . : = = é - 52°08 
ime, . : : . : : : 25°30 
Potash, . ; : : ; ; . 498 
Fluor, : F # 2 A : 0°96 
Water, ‘ A js Z z 4 -> 102 
99°19 
45. Schreibersite (of Patera). 
This ape mineral occurs in the American meteorites in 
more abundance than has usually been supposed, as was fully 
vancement of Science in April, 1854; and. as that memoir will 
be published in full in this Journal, nothing farther than the mere 
statement of the analysis of this mineral is here given. G.= 
7-017. 

t. S; 3. 
Tron, . : : . 57-22 56:04 56:53 
Nick, . : ; 25°82 26°43 28:02 
Cobalt, : : - 032 0°4 8 
Copper, . = . trace, not estimated. 
Phosphorus, 5 . 18°92 14°86 
Silica, > ; i 1°62 
Alumina, 163 . 
Lime, ‘ trace not estima’d ( ™% pees sen: 
Chlorine, v. OTS 
100-66 99°69 
Nos. 1 and 2 were separated mechanically from the meteoric iron ; 
No. 3 chemically. The silica, alu ime, were 
entirely absent from No. 3; and in the other spactiatd it is due 
to a siliceous mineral that I have found attached in small particles 
to the Schreibersite, and of which I have preserved one or two 
- small specimen 
The formula of Schreibersite I consider to be Ni? Fe! P- 
Pr. ct. 
Phosphorus, : atom, er : ; : . yea 
—— . : : 5 29°17 
re _ 5536 
Further particulars of this sida sei be docu in the papet 
already referred to. 
46. Protosulphuret of Iron. 
This sulphuret is the one found i ay the meteoric irons of this 
country. ‘The specimen examined came from Tennessee; iS 
Sp. gr. is 475. Its composition is different from that of magnetic 
