Alabama critical minerals site name 'Glencoe quarry occurrence,' GSA internal feature identification number ALMIN.28.20.006, located in the Glencoe 7.5' quadrangle in Etowah County, Alabama. This site has been documented to contain the commodity(ies) aluminum (aluminum oxide), calcium (calcium carbonate), calcium (calcium oxide), magnesium (magnesium oxide), manganese (manganese oxide), phosphorus (phosphorus pentoxide), silica (silicon dioxide). Was there past production of these minerals at this site?: Yes. The reference in which more information can be found on this site and its minerals can be found in: Puckett, T.M., Roberson, K.E., and Tew, B.H., 1990, High calcium deposits in the Newala Limestone (Appendix A): Alabama Geological [...]