104 GEOLOGICAL SURVEY OF ALABAMA 



white schist. A small deposit of mica had been cut into 

 near the bottom of the shaft at water level containing 

 only crystals of small size. 



Mica outcrops of favorable character are of frequent 

 occurrence in the cuts and along 'the main road leading 

 from Rockford N. E. to Kelly ton for a distance of eight 

 or nine miles, but no developments have been made except 

 in the vicinity of Crewsville, and on both sides of the 

 crossing by this road of Jack's creek, in Sections 34 and 

 35, Township 23 N., Range 19 E., in which localities 

 some mica mining has been done, not however in recent 

 years. 



There is a considerable area in that vicinity which 

 from appearances is mica bearing, and might be well 

 worthy of investigation. 



Thomas Mica Properties. Openings have been made 

 and some mica mined on the properties of J. H. and E. 

 B. Thomas located 4 miles east of Rockford near Hissop. 

 From the developments made quite an extensive deposit 

 of A-form and fish-bone mica is indicated, as also a fine 

 flake mica in a decomposed schist, which may have util- 

 ity by some method of concentration. The prevailing 

 rocks are granite and gneiss. The location has been 

 noted before in publications of the Ala. Geological Survey 

 for the occurrence there of beryl crystals of yellowish 

 green to aquamarine color in the quartz outcrops. 



Exhibit samples, serial No. 131 are from this pVoperty. 



CHILTON COUNTY. 



The extreme south western end of the Alabama mica 

 belt is comprised within that portion of eastern-central 

 Chilton county, lying west and southwest of Coosa river, 

 and east of the Louisville and Nashville Railroad. 



Its general geologic conditions are precisely similar 

 to those occurring in the adjoining section of S. W. Coosa 

 county, east of Coosa river, of which area it is the S. W. 

 extension. 



Mica occurrences of indicated value have been noted 

 and to some extent opened up in this section of the county, 

 but systematic efforts at development have been pre- 



