A distal expression of the Tri-State hydrothermal event evidenced in sphalerite and fluorite crystals in SE KS

Conference · Mon Mar 01 04:00:00 EST 1993 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:7207789

Ragan, V M ^[1]

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1. Univ. of Missouri, Kansas City, MO (United States). Geoscience Dept.

In Neosho Co., Kansas, sixty km north of the Tri-State Mississippi Valley-type (MVT) deposit, a newly studied MVT occurrence consists of abundant clay-filled tube structures in Pennsylvanian limestone containing sphalerite crystals up to 3 cm in diameter. The incidence also has 1--3 mm fluorite cubes calcite pockets in the limestone. MVT mineralization also occurs in Pennsylvanian rocks in Linn Co., KS at the Jumbo lead mine, at the Prescott zinc deposit, in coal cleats, and in limestone. Linn Co. is 130 km north of Tri-State, but fluid inclusion homogenization temperatures (T[sub h]) and salinities are similar to those for the fluid inclusions in Tri-State sphalerite. In Neosho Co. samples, T[sub h]s of fluid inclusions are from 83--102 C in fluorite and 79--126 C in sphalerite, comparable to Tri-State fluid inclusions in sphalerite. Salinities are [approximately] 7 equivalent wt.% NaCl in fluorite and 21--23% in sphalerite. The yellow-orange sphalerite contains distinct orange banding, in addition to the dark cloverleaf pattern of sector zoning common in Prescott sphalerite. The similarity of these deposits to Tri-State mineralization suggests, that they are distal expressions of the Tri-State hydrothermal event. The fluorite, not previously described in SE Kansas, may be unique to the Neosho Co. deposit.

• OSTI ID: 7207789
• Report Number(s): CONF-9303210--
• Conference Information: Journal Name: Geological Society of America, Abstracts with Programs; (United States) Journal Volume: 25:3
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
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58 GEOSCIENCES
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DEVELOPED COUNTRIES
FLUORITE
GEOLOGIC DEPOSITS
GEOTHERMOMETRY
HALIDE MINERALS
HYDROTHERMAL ALTERATION
HYDROTHERMAL SYNTHESIS
KANSAS
MINERALIZATION
MINERALS
NORTH AMERICA
SPHALERITE
SULFIDE MINERALS
SYNTHESIS
USA