Alabama critical minerals site name 'No. 23 prospect,' GSA internal feature identification number ALMIN.19.20.044, located in Located approximately 200-yards southwest of the Number Twenty-two prospect.the Rockford 7.5' quadrangle in Coosa County, Alabama. This site has been documented to contain the commodity(ies) tin (cassiterite). Was there past production of these minerals at this site?: No. The reference in which more information can be found on this site and its minerals can be found in: Hunter, F.R., 1944, Geology of the Alabama tin belt: Alabama Geological Survey Bulletin 54, p. 57. Spaine, S.I., 1969, Base- and precious-metal and related deposits of Alabama: Alabama Geological Survey Circular 55, p. 60. Neathery, T.L., 1974, [...]