Barite nodules in Devonian shale and mudstone of western Virginia /
Clark, Sandra H. B.
Mosier, Elwin L.
[Washington, D.C.] : U.S. G.P.O. ; Denver, CO : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, Federal Center,
1989.
Bibliography: p. 27-30.
Barite
Barite
Geology, Stratigraphic