ALABAMA MICA DEPOSITS 41 



nected with or attributable to the geologic conditions 

 existing, as for instance proximity to the granites. 



Generally speaking, the micas of the same locality and 

 origin are similar and present few differences in charac- 

 teristics. There are however exceptions to this rule, as 

 in Tallapoosa county, where clear amber muscovite is re- 

 covered in close proximity to deposits largely made up of 

 specked and spotted mica, carrying mineral inclusions. 

 It is a notable fact, however, in this connection, that sales 

 made of this particular spotted mica for electrical pur- 

 poses are stated to have been apparently unaffected by 

 these inclusions, which were not materially reflected in 

 the sale grades and prices realized therefor. 



Considered in respect to maximum and definite develop- 

 ment, the Alabama mica occurrences might be divided 

 into four major combinations designated as the Dade- 

 ville, the Micaville, the Pyriton, and the Rockford groups. 

 As however this group subdivision is of complete occur- 

 rence separately in four counties, it will be considered 

 under the general heading of all occurrences in each 

 county. 



