﻿230 Dana and Penfield — Undescribed Meteoric Stones. 



is stained by the rusting of the iron ; this oxidation has pro- 

 ceeded rather far, as might have been anticipated, and indeed the 

 appearance of some portions suggests that there may have been 

 present also some deliquescent compound (e. g. iron chloride). 

 The mass as a whole is somewhat porous and easily fractured. 



The metallic particles, which have mostly a bluish tarnish, 

 are scattered very uniformly through the whole mass. The 

 chondritic character is distinct though not strongly marked, 

 yellowish white spherules of olivine, and others of a dark gray 

 (bronzite ?) are sparingly scattered through it ; for the most 

 part it appears to be granular crystalline. 



In the sections examined under the microscope the olivine 

 is seen in granular form, not often distinctly grouped in 

 chondrules ; the bronzite also in longitudinal fragments. The 

 dark gray chondrules have an indistinct fibrous eccentric struct- 

 ure and act rather feebly on polarized light — they may be also 

 bronzite. The feldspar is not particularly distinct, although 

 occasional patches of a dull gray in polarized light probably 

 belong here. Glassy matter was not distinctly observed. 



The specific gravity of a fragment of the stone was found 

 to be 3*67. The chemical analysis (Penfield) showed a relation 

 of native iron to troilite and silicates very near that of the 

 Utah meteorite, namely, 17*90 to 82*10 per cent. 



The analysis of the iron gave : 



Fe 91*93 



Ni 7*39 



Co 0*63 



Cu 0*05 



100*00 



The analysis of the latter portion yielded : 



o i -ui • -trm { Troilite 6*95 



Soluble in HCl | smcates _____ 42 . g8 



Insoluble in HC1, including chromite _ 50*19 



Water _ 0*58 



100*40 

 The soluble and insoluble parts gave further : 





Soluble. 



Si0 o 



15*50 



36*32 



A1 2 3 



tr. 







FeO 



9*52 



22*31 



MgO__ 



17*17 



40*23 



CaO 











Na o 



0*12 



0-28 



K 2 



0*02 



0*04 



P 2 5 



0*35 



0*82 



Chromite 











Insoluble. 



28*00 



55*79 



2*78 



5*54 



3*97 



7-91 



11*87 



23*65 



1*68 



3-35 



0*93 



1*85 



0*12 



0-24 



0-84 1-67 



42-68 100-00 50-19 100*00 



