|Title:||Mining in Georgia collection|
|Quantity:||0.05 Linear feet (1 folder; MS 3041 to MS 3044 housed together in 1 half box)|
Mica is any of a group of hydrous potassium, aluminum silicate minerals. It is a type of phyllosilicate, exhibiting a two-dimensional sheet or layer structure. Among the principal rock-forming minerals, micas are found in all three major rock varieties - igneous, sedimentary, and metamorphic. Of the 28 known species of the mica group, only 6 are common rock-forming minerals. Muscovite, the common light-coloured mica, and biotite, which is typically black or nearly so, are the most abundant. Phlogopite, typically brown, and paragonite, which is macroscopically indistinguishable from muscovite, also are fairly common. Lepidolite, generally pinkish to lilac in colour, occurs in lithium-bearing pegmatites. Glauconite, a green species that does not have the same general macroscopic characteristics as the other micas, occurs sporadically in many marine sedimentary sequences. Encyclopedia Britannica Online. (http://search.eb.com/eb/article-800720) Retrieved 9/11/2009.
The collection consists of seven letters written by Georgians to F. P. Copper in Tiffin, Ohio concerning the prospects of mining mica in Georgia. Correspondents include C. A. Dozier (Gainesville, Georgia), C. Y. Rogers (Blairsville, Georgia) and W. K. Russell (Shades, Georgia). Also included is a sample of mica.
Mining in Georgia collection. MS 3043. Hargrett Rare Book and Manuscript Library, The University of Georgia Libraries.