198 © Intelligence and Miscellames. 
the idea of their specific identity: perhaps it might really 
be so ina chemical system; but their strong affinity in nat- 
ural properties, certainly proves them to belong to the same 
mineralogical eaten —the only Siflerenea between the com- 
in the Virginia stone, 
ts not fall ae two thirds of its she bulk, I find it al- 
so constitutes the principal ingredient in the Weston a 
ites, and is occasionally seen in those from Marylan 
endeavoring to ascertain if the small black grains cecal 
ted through the Stannern meteoric stones might not be this 
substance, I was led to conjecture from) their, see fusibil- 
ity before the blowpipe, that they were pyroxene; a mineral, 
from the. researches of G. Rose, well ascertained to’ exist 
in aerolites.* 
2 Feldspar. 
Under this name I allude to one of the most common in- 
gredients of meteorites, although in the present specimen 
it forms somewhat less than one quarter of the mass. It is 
every where dispersed through the stone, filling up little in- 
terstices and investing the chrysolite in thin coatings. 
Mineralogical description, 
External see prvi 23 minute grains, possessed’ of 
feeble d of e and appeeus g like powder to 
the naked 
ae no visible only with a mic crosco 
Hardness 7 as not to allow of its impression with the 
point of a 
Lustre vitidotiae _— white, rarely with a faint tinge of 
green: translucen 
oe characters. 
It’ was with some difficulty that pure pieces of sufficient 
"Size could be obtained for blowpipe trials. A thin scale in 
0 oes = 2 
* Ann. de Chimie et de Pheisas ts XXXL, p. 81. 
