THE HENDEmONVlLLE METEORITE— MERRILL. 



81 



ammonium chloride (12 gram.s of the double salt, Hg-Cl,.2NH^C1.2HoO, 

 to the liter) in an atmosphere of h^'drogen. The native metals thus 

 separated were in the following proportions: 



The sulphur was determined in a 1,01-gram sample after fusion with 

 sodium carbonate and potassium nitrite. The amount found was 1.61 

 per cent, which corresponds to 1.13 per cent of troilite. The phos- 

 phorus was determined in a 1.5285-gram sample, and 0.012 per cent 

 was found, which corresponds to 0.08 per cent of schreibersite. 



The separation of the silicates was effected in a 2.63-gram fragment 

 by treating the finely pulverized mass with dilute hydrochloric acid, 

 specific gravity 1.06, on the water batii for two hours, repeating this 

 operation twice, followed b}' boiling the moist residue of undecomposed 

 silicate with a solution of sodium carbonate, since the major part of 

 the silica of the soluble silicate will be here found. 



The analysis of the soluble silicate gave: 



The in.soluble silicates, analysis below, were decomposed by fusion 

 with sodium carbonate. The alkalies were determined in a separate 

 portion. 



Constituents. 



SiOa 



FeO 



AlaOa-... 

 CroOa-..- 



CaO 



MgO 



K,0 



NasO 



Chromite 



Found. 



Per cent. 



30.40 

 4.89 

 2.00 

 0.20 

 1.98 



13.24 

 0.10 

 0.96 

 0.51 



Calculated 

 to 100. 



■ cnit. 

 56. 01 

 9.01 

 3. 68 

 0.37 

 3.65 

 21.39 

 0. 18 

 1.77 

 0.94 



54.28 



100.00 



Proc. N. M. vol. xxxii— 07- 



