ALABAMA MICA DEPOSITS 89 



Of this amount there still remained in the mica shop, 

 an accumulated residue stock of about 21 tons, in which 

 the sheet mica had been all knife trimmed and graded, 

 and was subsequently sold. It was carefully gone over 

 and consisted very largely of mica of exceptionally high 

 grade, running in more than ordinarily large sizes up to 

 8x12 inches. 



No attempts were ever made to test the continuity of 

 the micaized body N. E. or S. W. along the strike, outside 

 the slope limits of the mine proper, or as stated at lower 

 levels, which is to be regretted, as what may prove to be 

 a valuable and extensive body of fine mica is here reas- 

 onably indicated. 



The best grade, and the largest sizes, of crystals re- 

 covered, was, as is in this field usually the case, below 

 water level. 



Exhibit samples serial No. 123 is from this mine. 



Eureka Mica Mine. The Eureka mica mine is located 

 in the N. E. % of the N. E. 14 of Section 16, Township 

 19 S., Range 8 E., being about i/ 2 mile distant W. of the 

 M. & G. mine and 1% miles N. E. of Pyriton station, on 

 the A. B. & A. R. R. It is the property of the Eureka 

 Mica Co., of Birmingham, Ala. 



A heavy outcrop of micaized quartz led to the original 

 development by open cut. 



As subsequently mined by the Eureka Company, two 

 slopes were driven in the pegmatite, about 50 feet apart, 

 following it on its S. E. dip of about 40, connected by 

 two lateral cross entries. A main working shaft 130 

 feet in depth, reaching the pegmatite "vein," connected 

 with the bottom of the east slope for an air course, as 

 shown on Figure 5. 



In the east slope, a right entry, 60 feet in length, was 

 run out on the 60 foot level, and a second or lower right 

 entry, about 75 feet continued on to the shaft. 



The first or upper left entry at the 70 feet level, 40 feet 

 in length ; and the second or lower left, 70 feet long, con- 

 nected up the two slopes, blocking out some 600 feet of 

 exposed faces, a large proportion of which showed more 

 or less mica crystals in the walls at the time of the ex- 

 amination. 



