METEORITES OF NORTH AMERICA. 389 



RUSHVTLLE. 



Franklin County, Indiana. 



Here also Brookville. 



Latitude 39° 35' N., longitude 85° 25' W. 



Stone. Gray chondrite, brecciated (Cgb), of Brezina. 



Found 1866. 



Weight ? 



The first mention of this meteorite is made in Wiilfing's catalogue * under the name Brook- 

 ville. Ward 3 states that the meteorite is undescribed. 



The main mass was acquired by Bement and is now in the American Museum of Natural 

 History, New York City. 



BIBLIOGRAPHY. 



1. 1897: Wulftng. Meteoriten in Sammlungen, p. 398. (Brookville.) 



2. 1903: Berwerth. Verzeichniss, p. 76. 



3. 1904: Ward. Catalogue of the Ward-Coonley Collection, pp. 61 and 87. 



RUSSEL GULCH. 

 Gilpin County, Colorado. 

 Here also "The Colorado meteorite." 

 Latitude 39° 45' N., longitude 105° 40' W. 



Iron. Fine octahedrite (Of), of Brezina; Caillite (type 18), of Meunier. 

 Found 1863; described 1866. 

 Weight, 13kga. (29 lbs.). 



The first description of this meteorite was by Smith ' as follows: 



I have known of the existence of a new meteoric iron from Russel Gulch in Colorado, for about two years, but it 

 was only recently that it passed into my hands. I first heard of it in the possession of Mr. Fisher, of New York, who 

 subsequently turned it over to Prof. C. F. Chandler, of Columbia College, New York, who kindly submitted it to me, 

 as I am furnished with the necessary means for cutting up and scrutinizing thoroughly this class of bodies. 



The mass of iron is accompanied with the following label: "Meteoric iron found in Russel Gulch, February 18, 

 1863, by Mr. Otho Curtice. Weight, 29 pounds. Brought to New York, February, 1864." 



The mass measures in its extreme length, breadth, and thickness 8.5 by 7.25 by 5.5 inches. It is perfect in all 

 parts except at one extremity, and, as stated above, weighs 29 pounds. 



This iron is one of medium hardness, with a density 7.72, and when cut through was found to contain a few small 

 nodules of iron pyrites. It is attacked readily by nitric acid, and gives bold Widmannstatten figures without very 

 sharp angles. It resists the action of air and moisture very well, and is consequently but little altered on the surface. 

 No siliceous minerals could be traced in any of the crevices. On analysis its composition was found to be — 



Iron 90. 61 



Nickel 7. 84 



Cobalt -78 



Copper minute quantity 



Phosphorus .02 



99.25 

 Brezina 2 remarked regarding the Vienna specimen as follows : 



There are two entirely different specimens in the Vienna Museum labeled Russel Gulch. The principal one, 

 obtained from Lawrence Smith, is undoubtedly authentic; another one comes from the Calcutta collection and 

 belongs to the Trenton group of medium octahedrites. The authentic one is entirely different from the four other 

 specimens of Brezina's class Ofch, on account of the almost entire absence of ridges or the perfect uniformity of the 

 bands. 



Meunier * stated : 



This iron is a typical caillite and especially analogous to Kenton County, that is, with excess of kamacite. The 

 tsenite and the kamacite are normal. Inclusions, more or less irregular in form, are numerous; no pyrrhotine is vis- 

 ible; but schreibersite is not wanting. 



Cohen 5 described the structure as follows : 



The somewhat bunched lamellae are long and, according to Brezina, 0.15 mm. broad and usually bent, although in 

 very irregular manner and degree; the curvature is considerable. In the illustration of a section the bending is 

 exceptionally small and is wanting entirely in most of the lamellae. Tsenite appears distinctly upon some sections, 

 very sparingly upon others. The large and abundant fields are somewhat less prominent than the bands. 



