HARRISON COUNTY (iND.) METEORITES. 315 



gray color of stony meteorites interspersed with bright metallic 

 particles. 



The mean specific gravity is 3.465; when broken up and 

 examined under a glass four substances are distinguishable — 

 metallic particles, dark glassy mineral, dark dull mineral, white 

 mineral matter. 



Examined as a whole, the following elements were found in 



it: iron, nickel, cobalt, copper, phosphorus, sulphur, silicium, 



calcium, aluminum, magnesium, manganese, sodium, potassium, 



oxygen. By the action of the magnet it was separated into 



Nickeliferous iron 4.91 



Earthy minerals 95.19 



100.00 

 The earthy minerals acted on by warm dilute hydrochloric 

 acid, thrown on a filter and thoroughly washed, then treated 

 with dilute caustic potash, to dissolve any silica of the decom- 

 posed portion that was not dissolved by the acid, gave 



Soluble portion 62.49 



Insoluble portion 37.51 



The metallic portion separated from the earthy part gave 



Iron 86.781 



Nickel.... 13.241 



Cobalt 342 



Copper 036 



Phosphorus 026 



Sulphur .022 



The earthy portion freed from metal gave 



Silica 47.06 



Oxide of iron 26.05 



Magnesia 27.61 



Alumina 2.35 



Lime .81 



Soda 42 



Potash....... 68 



Protoxide of manganese trace, not estimated. 



It is clear from the anatyses made out that these meteoric 



stones contain the constituents frequently found in similar 



bodies; namely, nickeliferous iron, phosphuret of iron and 



nickel, sulphuret of iron, olivine, pyroxene, and albite, and in 



about the following proportions: 



Nickeliferous iron 4.989 



Schreibersite 009 



Magnetic pyrites .001 



Olivine 61.000 



Pyroxene and albite 34.000 



