Skip to main content
U.S. flag

An official website of the United States government

Minor epigenetic, diagenetic, and syngenetic sulfide, fluorite, and barite occurrences in the central United States

September 1, 1968

Metallic sulfides, fluorite, barite, and celestite are widespread in the sedimentary rocks of the central United States. Many occurrences are epigenetic concentrations either in known major mineral districts or in clusters of deposits that warrant further exploration for potential ore. Evaluation of trace-element composition, of fluid inclusions, of depositional temperature, and of isotopic composition of sulfur may help discriminate potentially economic deposits from even more widespread, probably noneconomic, syngeneic occurrences. Known major mineral districts and many promising sulfide occurrences are located along complex major fault systems and particularly over structural domes at intersections of fault systems. Economically promising sulfide deposits occur along a west-trending fault system crossing Kentucky and Missouri near the 38th parallel, particularly at associated cryptoexplosion structures along it, at the intersection of the fault system with the Cincinnati arch. Elsewhere in the central United States, promising sulfide occurrences are located along the crest of the Findlay arch, near Serpent Mound, Ohio, along the northwest-trending Mount Carmel fault in southwestern Indiana, and buried at depth in oil fields of west-central Kansas.Other types of deposits that are productive or may have some future economic interest are locally economic and possibly syngenetic red-bed copper occurrences in Oklahoma, Texas, Kansas, and Pennsylvania. Most widespread are the black shale and pyritic sandstone beds, some of which have been a source of pyrite for sulfur and sulfuric acid in conjunction with coal mining. Bedded barite deposits of possibly diagenetic origin have been mined in Arkansas. Diagenetic siderite concretions containing sulfides and barite were widespread sources of iron in the 19th century. 

Citation Information

Publication Year 1968
Title Minor epigenetic, diagenetic, and syngenetic sulfide, fluorite, and barite occurrences in the central United States
DOI 10.2113/gsecongeo.63.6.585
Authors A. V. Heyl
Publication Type Article
Publication Subtype Journal Article
Series Title Economic Geology
Index ID 70221366
Record Source USGS Publications Warehouse