B. Sill ; nam— Iron Ore of Mem 



Xumes of Iron Mines. 



Common. 



Tep.C, 



Bescuino. 



Coscu. 



Metallic iron 



•146 



jS 



67-25 



















Sulphur 



Titnnic acid 



•905 





100000 



100-000 



100.000 





26-18 



mi 





Magnetic oxide 





Phosphorus with 100 metallic iron .. 



■000 



•047 



■123 



A few notes on the localities of these three iron deposits are 

 of interest in this connection. 



Tepuche is near the town of this name on the Eio de Humaya, 

 ten or twelve miles west of the city of Culiacan. The iron occurs 

 in porphyry resembling that of the Cerro de Mercado. It is a 

 massive ore showing no crystalline forms, and occurs in blocks 

 of a cubic yard and less, scattered along the apparent outcrop 

 of a bed which shows again on another hill one-quarter of a 

 mile off. It is cut by a strong stream of water 436 feet below 

 the top of the ridge, the sides of the gulley being strewn with 

 blocks and debris of this ore. Good lime exists abundantly 

 within one and a half miles of this locality which is also on the 

 line of the Sinaloa and Durango Railroad, in a country abound- 

 ing in various hard woods and covered with dense underbrush, 

 up to an elevation of about 1000 feet above sea level. Above 

 this level and^up to 5,000 or 6,000 feet, pines and other Conifers? 

 come in place of the hard woods. 



Bescuino. — Little is known of this locality, which was Dot per- 

 sonally explored by Mr. North. It is reported to be a hill of 

 400 to 500 feet in elevation, less abundantly timbered than 

 Tepuche. It is nearly due easl from Culiacan, about twenty 



,:x 



whieh 



Cosolu. — The ore at this locality was all in 1 

 none was found in place. The summit of the hil 

 was found is 270 feet above the bottom of a dry arroyo. The 

 surrounding rocks are calcareous. As Cosolu is an old mining 

 region abounding in low grade veins of gold and silver; timber 

 and wood for fuel is not found within 30 or 40 miles. 



The question of the renovation of forests on the Gulf slopes 

 of Sinaloa is one of much interest. In reply to my inquiry. 

 Mr. North says : " I do not believe the hard woods 



be of 



