OOLOEADO. 



483 



2. Coal (No. 1), 11 to 14 feet. 

 1. Sandstone. 



The same report presents the following analyses of samples of lignite 

 from Marshall's mines that were submitted to Dr. Torrey by the Union Pacific 

 Railroad Company: 





I. 



11. 





12. OO 



26.00 



59.20 



2.80 



20.00 

 19.30 

 58.70 



2.00 



Volatile matter, expelled at red heat, forming inflammable gases and vapors ------- 







100.00 



100.00 



The iron ore is mostly concretionary, but sometimes it is so continuous 

 as to give the idea of a permanent bed. Much of it is full of impressions of 

 leaves in fragments, stems, grass, &c. It occurs, throughout the intercalated 

 beds of clay, in masses that vary from one ounce to several tons in weight, 

 and is chiefly in the form of brown hematite. Selected specimens yield a 

 high percentage in metallic iron. 



The following is an analysis of a sample of the ore, made by Mr. Edward 

 M. Kent, and quoted from a published report of the Belle Monte Furnace 

 Iron and Coal Company : 



Iron 41.3 



Oxygen 17.7 



Gangue 27.8 



Water 12.4 



Loss 0.8 



100.0 



A blast-furnace was built by the company named above for the purpose 

 of smelting iron, near the Marshall mines, which was in operation for two 

 months, producing in that time 250 tons of pig iron. The result of this ex- 

 perience was that 5,000 pounds of ore yielded one ton of metal. In this 



