| 
Meteoric Stones. 97 
4. Oxyd of tin.—This is mixed with the ehrome-iron. One 
can satisfy himself of its presence when the last named metal is 
_ Separated by bi-sulphate of potassa, and the solution in water is 
"treated with sulphuretted hydrogen, when the sulphuret of tin is 
thrown down. It has a trace of copper. : 
5. Magnetic Iron-ore.—This does not perhaps occur in all. It 
is taken out with the magnet, when it again manifests its property 
of dissolving in hydro-chloric-acid with a yellow color and with- 
out a disengagement of hydrogen. 2 
6. Sulphuret of Fron.—This is found in all. It has been im- 
possible for me to separate any for a distinct examination. All 
the circumstances seem to show that it consists of one atom of 
each of the elements. A surplus of sulphur in a mass, where a 
surplus of iron prevails throughout, is not supposable. One part of 
it follows the magnet together with the iron, the other part remains 
in the powder of the stone, as nothing more is given up to the 
Magnet. This is sometimes a larger percentage. - Whether this 
is by a chemical union, as is the case, for example, with the sul- 
tet of manganese in helvin, or is merely by adhesion to the 
powder of the stone, my researches could not decide; the latter 
'S the more probable when FeS is weakly magnetic, but the | 
former is not impossible. 'The sulphuret of iron causes the pul- 
Verized meteoric stone to develope sulphuretted hydrogen gas 
When it is mixed with hydro-chlorie-acid. 
7. Native Iron.—This iron is not pure, although it is altogether 
malleable. It contains carbon, sulphur, phosphorus, magnesia, 
langanese, nickel, cobalt, tin and copper. But it is moreover 
blended with small crystals within the mass, of a union of phos- 
Phuret of iron with phosphuret of nickel, and phosphuret of man- 
Saese. These are insoluble in hydro-chloric-acid and fall down 
While in the solution. Their quantity varies. ‘The iron of El- 
enbogen gives 2! per cent., but the Pallasian iron not ; per cent. 
Olt. A part is so finely divided in the mass of the iron, that 
What falls down in the solution resembles a black powder. The 
“aise of the Widmanstittian* figures is, that the foreign metals are 
meteoric 
me refer i he surface of some 
i 8 to figures of a crystalline shape on the 
i id Agram, Siberia, icin &c. first noticed by Widmanstatten. See ay 
cet Geschichte und Kenntniss meteorischen Stein-und Metall-Massen von D, 
Carl von 
Vol, x 
Schreibers. p. 70.—Tr. 
Xxvit, No. 1.—July, 1839, bis. 18 
2, per teateits Wuintsc 
caftg be, AIR eae Se ee, ae 
