Goethite-bearing brine inclusions, petroleum inclusions, and the geochemical conditions of ore deposition at the Jumbo mine, Kansas
- Univ. of Missouri, Kansas City (USA)
Petroleum-bearing fluid inclusions occur in sphalerite, calcite, dolomite, and barite at the Jumbo mine, a Mississippi Valley-type deposit in eastern Kansas. In addition to petroleum, Na-Ca-Mg-Fe chloride brines were present during deposition of calcite and sphalerite in which primary inclusions contain {approx gt}23 equivalent wt.% NaCl. Dolomite- and barite-hosted inclusions are more dilute, possibly because of mixing between hydrothermal fluids and groundwater during mineralization. Primary oil inclusions in sphalerite have homogenization temperatures (Th) between 85 and 95{degree}C. Aqueous inclusions have Th values ranging from {approximately}90 to 130{degree}C for sphalerite to below {approximately}50{degree}C for barite. Primary brine inclusions in calcite at the Jumbo mine contain goethite, apparently as a daughter mineral. Goethite has also been tentatively identified in inclusions from the Fletcher mine of Missouri. If goethite is a true daughter phase, it implies the presence of oxidized fluids during mineralization. This suggests that ore deposition resulted from interactions between hydrothermal fluids and dilute groundwater.
- OSTI ID:
- 5181289
- Report Number(s):
- CONF-8701162-; CODEN: GCACA
- Journal Information:
- Geochimica et Cosmochimica Acta; (USA), Vol. 52:5; Conference: American conference on research on fluid inclusions (ACROFI), Socorro, NM (USA), 5 Jan 1987; ISSN 0016-7037
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
INCLUSIONS
CHEMICAL COMPOSITION
KANSAS
ZINC ORES
MINERALIZATION
BARITE
BRINES
CALCITE
DOLOMITE
GEOCHEMISTRY
GEOTHERMOMETRY
GOETHITE
HYDROTHERMAL SYNTHESIS
OXIDATION
PETROGENESIS
PETROLEUM
SPHALERITE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM SULFATES
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
CHEMICAL REACTIONS
CHEMISTRY
ENERGY SOURCES
FEDERAL REGION VII
FOSSIL FUELS
FUELS
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MINERALS
NORTH AMERICA
ORES
OXIDE MINERALS
OXYGEN COMPOUNDS
SULFATE MINERALS
SULFATES
SULFIDE MINERALS
SULFUR COMPOUNDS
SYNTHESIS
USA
580000* - Geosciences