PRESTON — FRANCEVILLE. 77 



mm. in length. The taenite occurs in minute fihns between the kam- 

 acite plates. 



The plessite patches are comparatively small for an iron of such 

 coarse crystallization. Some of these patches show no structure when 

 etched, except a slightly pitted surface, while others are prominently 

 made up of alternate layers of kamacite and teenite, producing sharply 

 the so-called Laphamite lines. 



Schreibersite is not visible on the etched surfaces macroscopically, 

 not even surrounding the troilite nodules as is usually the case. 



Mr. John M. Davison, to whom was given 23.9 gms. for analysis, 

 reports as follows: 



" The specific gravity of this siderite is 7.87. An approximate 

 " analysis gave : 

 "soluble in hydrochloric acid - - - kamacite and taenite - 99.16'?! 



combined carbon, not deter. 



r schreibersite 0-837 



* 'undissolved in hydrochloric acid -j graphite and silicates (trace) .003 



(^platinum (from 23.9 gms.) trace 



100, 



"The analysis of kamacite and taenite together gave : 



Fe. 91.92^ 



Ni. 8.13 



100.05" 



The weight of this most interesting siderite is 41 pounds, 6^ 

 ounces, or 18.3 kilograms. 



Colorado has not been prolific in supplying meteorites to the 

 scientific world. As far as noted, including the present iron, there 

 have been but five. All of which are siderites. 



Russel Gulch, Gilpin County, - - ^ - - - - found 1863 

 Bear Creek, near Denver . . - . ^ ^ . . . " 1866 



Jefferson, 30 miles from Den\'er fell June, 1867 



Franceville, El Paso County - - . - ^ - > found 1890 

 Mount Ouray, Chaffee County --..... '< 1894 

 I can find no account of one of these, the "Jefferson, (81 Shep- 

 ard Collection) 30 miles from Denver, Colorado," listed as having 

 fallen in June, 1867, except in the descriptive catalogue of the 

 meteorite collection in the United States National Museum, Jan., 1902. 

 It seems apparent that a mistake has been made in labelling this speci- 

 men^ and it must be dropped as a distinct fall for the following reasons. 



