Dr. Walter Flight — History of Meteorites. 601 



According to Meunier this stone has a specific gravity = 3*369/ 

 and consists of: 



Nickel-iron 8-050 



Troilite 3-044 



Soluble silicate 65-909 



Insoluble silicate 23-571 



100-574 

 The nickel-iron contains : 



Iron = 93-88; Nickel 6-12. Total = 100-00. 

 and the portions of the silicate separated by treatment with acid and 

 sodium carbonate : 



Si0 2 A1 2 3 & Fe 2 3 Cr 2 3 FeO MgO CaO K 2 Na 3 



A.. Soluble 45-66 — - ■ — 3-05 50-68 — 0-61 trace = 100-00 



B. Insoluble... 61-96 2-56 0"05 8-49 24-62 2-12 0-20 — = 100-00 



In both portions the silicic acid is considerably in excess of that 

 required to form a silicate of the form of olivine in A, and of a 

 bronzite in B. The amount of iron protoxide in the portion which 

 gelatinised with acid is unusually small. 



Meunier refers to this meteorite in his description of the stone 

 which fell at St. Denis- Westrein, near Ghent (1855, June 7th). 

 (See p. 500.) 



1868, October 17th. — Lodran, Mooltan, India. 2 



This meteorite fell at 2 p.m. on the above day, the descent being 

 accompanied with a loud explosion, which appeared to come from 

 the east. The chondritic structure noticed in many meteorites was 

 not observed in this stone, but enclosed within its black crust was 

 found a magma of siliceous particles of so coarse-grained a cha- 

 racter that the individual granules occasionally measured 2 mm. in 

 diameter. The constituent minerals were carefully isolated before 

 analysis, which showed the stone to consist of : 



Nickel-iron 32-5 



Magnetic pyrites 7'4 



Olivine 28-9 



Bronzite, with some chromite and anorthite . 31-2 



100-0 

 The alloy, an important ingredient, which developes figures re- 

 sembling those of the Senegal iron, forms a mesh-work enclosing 

 the silicates, the crystals of olivine not unfrequently leaving a com- 

 plete impression of their faces in it ; it has the following, com- 

 position : 



Iron = 85-44; Nickel = 12-79; Magnesia = 0- 25 ; Residue = 0-81. Total = 99-29. 

 Associated with the substance just mentioned and occasionally en- 

 tangled in the silicates were fragments of magnetic pyrites : they 

 possess no crystalline structure and dissolve in acid with deposition 

 of sulphur. The olivine is of a bluish grey to Prussian blue colour, 



1 In his paper on the Belgian meteorite, a specific gravity = 3-43 is given. 



2 G. Tschermak. Sitzber. Ak. Wiss. Wien, 1870, lxi. 465. Pogg. Ann., cxl. 321. 

 — Records of the Geological Survey of India, vol. ii. part 1, page 20. 



