HANDBOOK OF THE METEORITE COLLECTIONS. 



161 



TOYAH, REEVES COUNTY, TEXAS. No. 441. 



Iron. Weight 28 grams. Locality uncertain. Undescribed. 



TRAVIS COUNTY, TEXAS. No. 148. 



Stone, Ckb. Weight 2,650 grams. Nearly complete mass with 

 surface much oxidized. Interior nearly black and stained by iron 

 rust. Found 1889; date of fall unknown. Composition as shown 

 by L. G. Eakins's analysis: 



Per cent. 



Silica (SiO^) 44.75 



Alumina (Al.Os) 2.72 



Chromic oxide (Ci^Os) .52 



Copper (Cu) Trace. 



Ferrous oxide (FeO) 16.04 



Iron (Fe) 1.83 



Nickel oxide (NiO) .52 



Nickel (Ni) .22 



Cobalt (Co) .01 



Manganous oxide (MuO) Trace. 



Lime (CaO) 2.23 



Magnesia (MgO) 27.93 



Potash (K2O) .13 



Soda (Na^O) 1.13 



Phosplioric acid (P2O5) .41 



Sulphur (S) 1.83 



Ignition (H,0) .84 



101. 11 

 Less O for S- 1 .92 



100. 19 



The soluble and insoluble silicate analyses vielded: 



Constituents. 



Silica (SiOj) 



Alumina ( AI2O3) 



Chromic oxido (CriOj). 

 Ferrous oxide (FeO). . 

 Nickel oxido (NiO).... 



Lime(CaO) 



Magnesia (MgO) 



Potash (K2O) 



Soda(Na20) 



Soluble in HCl (troilite 

 deducted). 



Analysis, 



15. 67 

 I.OIJ 



8.12 



.49 



.42 



15. 34 



Undet. 



Undet. 



41.10 



Calculat- 

 ed to 100 

 per cent . 



38.13 

 2.58 



19. 76 

 1.19 

 1.02 



37.32 



Molecu- 

 lar 

 ratios. 



0. 636 

 .025 



.274 

 .016 

 .018 

 .933 



Insoluble in HCI. 



Analysis, 



30.36 



2.02 



.54 



4.95 



1.94 



13.22 



.10 



.95 



54.08 



Calculat- 

 ed to 100 

 percent. 



56.14 

 3.73 

 1.00 

 9.15 



3.59 



24.44 



.19 



1.76 



100.00 



Molecu- 

 lar 

 ratios. 



0.936 

 .036 

 .007 

 .127 



.064 

 .611 

 .002 

 .028 



5692°— Bull, 94—16 11 



