/.. '/. Kuk'nis- X< W Sinn, M<f, <>,■'< f<. 59 



Ajrt. XII. — A new Stoju Meteorit : by L. (i. Eakins. 



The meteorite which forms the subject of this paper was 

 brought to notice by Prof. \\. T. Hill, of the University of 

 Texas, who presented the piece first obtained by him to the 



tional Museum. This piece, of an irregular shape, and 

 weighing about two and a half kilograms, is supposed to be 

 but a fragment of a much larger mass, which Prof. Hill 

 expects to obtain. 



It has a superficial coating of a yellowish brown color where 

 it lias been subject to weathering, hut on a fractured, unaltered 

 surface it is dull black with a slight grayish tinge. It is hard, 

 compact, and very tough ; to the unaided eye the stony mass 

 i> very uniform in structure, and none of the composing sili- 

 cates can be distinguished, but troilite can be plainly seen 

 scattered throughout it, and on a ground and polished surface 

 the metallic particles are also visible. Under the microscope, 

 (for which information I am indebted to Mr. Whitman Cross,) 

 the stony portion seems to consist chiefly of olivine and ensta- 

 tite. with, a small quantity of a colorless mineral which is prob- 

 ably a feldspar : as will be seen later, the analytical results 

 also indicate the presence of a feldspar, while chromite also 

 was found unmistakably. 



The mass has a specific gravity of 3'543 at 30°, and its anal- 

 ysis as a whole is as follows : 



SiO, . 44-75 



A1,0 3 2-72 



Cr.O, ... -- -52 



Cu -- tr. 



FeO 16-0 i 



Fe 1*83 



NiO. '52 



Ni -22 



Co ---- '01 



MnO - tr. 



CaO 2-23 



MgO -...-- 27-93 



k;o --. -i3 



Na,0 -. -- --- 1-13 



P.O, '41 



S 1-83 



H t O - - - "84 



101-11 



Less O for S #2 



100-19 



