METEORITES OF NORTH AMERICA. 301 



in places swellings apparently composed of nickel-iron, shiny granules, splinters, or variously formed, streaked struc- 

 tures of 0.01 to 0.07 mm. in size. I regard them as schreibersite, which, after weak etching, remained coated with a 

 thin film of nickel iron. It is evident from this that the nickel-iron in immediate proximity to the before-mentioned 

 granules is affected less readily by the acid than the less fine grained groundmass. At all events there lies in one place 

 a group of rhabdite needles up to 1 mm. in length, each one of which is surrounded by a smooth, shiny etching zone 

 about 0.05 mm. wide. There are, besides, grains 0.5 to 1 mm. in size and isolated, columnar crystals of schreibersite 

 also up to 3 mm. in length in considerable numbers, which, however, show no sort of regular arrangement. A few 

 grains contain a grain of troilite, which is doubtless accompanied by daubr6elite; the dimensions are too small for a 

 more exact determination. 



According to the structure of the principal part of the nickel-iron, and under the assumption that Damour's analysis 

 is trustworthy, Mezquital belongs to the granular ataxites poor in nickel. It is distinguished from the Chesterville 

 meteorite which is of almost the same granular and chemical make-up, by the arrangement of the swellings in layers, 

 which in the latter iron are distributed evenly over the entire etching surface. I would assent to this grouping also, 

 if the "lay" of the swellings was oriented according to faces of the hexahedron. 



Later Cohen 11 gave an analysis by Fahrenhorst, as follows (specific gravity, 7.7687): 

 Pe Ni Co Cu Cr S P 



93.36 5.46 0.87 0.03 0.00 0.15 0.16 =100.03 



From this he deduced the mineralogical composition : 



Nickel iron 98. 55 



Schreibersite ■. 1- 04 



Troilite 0.41 



100.00 

 The meteorite is chiefly (7,120 grams) in the possession of the British Museum. 



BIBLIOGRAPHY. 



1. 186S: Daubreb. Fer m6teorique trouve 1 a San Francisco del Mezquital, Durango, Mexique. Comptes Rendue, 



Tome 66, pp. 573-574. (Analysis by Damour.) 



2. 1869: Meunier. Recherches. Ann. Chim. Phys., 4th ser., vol. 17, pp. 67-98. 



3. 1870: Burkart. Fundorte IV. Neues Jahrb. Min., 1870, p. 685. 



4. 1884: Meunier. Meteorites, p. 116. 



5. 1885: Brezina. Wiener Sammlung, pp. 210 and 233. 



6. 1889: Meunier. Alteration remarquable du fer m^teorique de San Francisco del Mezquital. Comptes Rendus, 



Tome 108, pp. 1028-1029. 



7. 1890: Fletcher. Mexican Meteorites. Mineral. Mag., vol. 9, pp. 154-155 and 156. 



8. 1893: Meunier. Revision des fers m£teoriques, p. 74. 



9. 1895: Brezina. Wiener Sammlung, p. 294. 



10. 1898: Cohen. Meteoreisenstudien, IX. Ann. K. K. Naturhist. Hofmus. Wien, vol. 13, pp. 473-475. 



11. 1900: Cohen. Meteoreisenstudien, XI. Idem, vol. 15, pp. 365-366. 



12. 1905: Cohen. Meteoritenkunde, Heft 3, pp. 48-51. 



Miller's Run. See Pittsburg. 

 Milwaukee. See Trenton. 



MLNCY." 



Taney County, Missouri. 



Here also Crawford County, Forsyth, Miney, Newton County, and Taney County. 



Latitude 36° 35' N., longitude 93° 12' W. 



Mesosiderite (M); Logronite (type 31), of Meunier. 



Found about 1856; described 1860. 



Weight, 90 kgs. (197 lbs.). 



The first published mention of this meteorite seems to have been by Shepard, 1 under the 

 title "Forsyth (Taney County, Missouri)", as follows: 



My first information of this locality was derived while on a visit to southeastern Missouri in April last (1860), from 

 N. Aubushon, Esq., of Ironton. He stated that a small specimen of curiously knitted, malleable ore of a white color 

 resembling silver, had been sent him two or three years ago by a person residing near the locality. Mr. Aubushon for- 

 warded it to an assayer at Ducktown, Tennessee, from whom he learned that it was composed of iron and nickel. On 



o The spelling Miney was given by many writers, but the correct spelling is Mincy. 



