Alabama minerals map 'Mineral resources of Morgan County, Alabama,' Alabama Geological Survey Special Map 242, by Rheams, K. F. , published in 1994, with a scale of 1:126,720. This county minerals map, GSA internal feature identification number ALMAP.52.20.SM242, has documented the following commodity(ies): clay, limestone (asphaltic), limestone (crystalline), limestone (fossiliferous), niter, petroleum (asphaltic rock), sand, sand and gravel, sandstone, shale.