Alabama critical minerals site name 'Unnamed occurrence,' GSA internal feature identification number ALMIN.04.20.027, located in the Aldrich 7.5' quadrangle in Bibb County, Alabama. This site has been documented to contain the commodity(ies) aluminum (aluminum oxide), calcium (calcium carbonate), iron (iron oxide), magnesium (magnesium carbonate), silica (silicon dioxide). 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: Chaffin, H.S., Jr., Szabo, M.W., and Daniel, T.W., Jr., 1976, Mineral resources of Bibb County, Alabama: Alabama Geological Survey Special Map 119, p. 9. Beg, M.A., 1984, Limestone resources of Alabama: [...]