Masters Theses

Abstract

"A bedding-replacement fluorite deposit, discovered by recent drilling in the northeast part of the Cave in Rock district, southern Illinois, has been studied by a combination of geochemical, X-ray, and microscopic techniques. The dispersion pattern for trace zinc, lead, cadmium and copper concentrations in carbonate host rocks adjacent to the fluorspar deposit, determined by atomic absorption spectrophotometry, appears to hold only little hope in serving as an aid to exploration. Only cadmium anomalies appear closely related to the known fluorspar ore, and those values are not greatly above background.

Broad zinc and cadmium anomalies and a narrow lead anomaly are present in soils over the fluorspar deposit. Since the fluorspar deposit is at the depth of 800 feet, it suggests that the soil anomaly may be related to more near surface mineralization.

Significant lateral variations in the degree of dolomitization were detected in those horizons most favorable to fluorspar mineralization. Part of this dolomitization is related to the mineralization process.

Microscopic examination of thin sections and polished sections has (1) shown the presence of textures illustrating that part of the dolomite was introduced with fluorite mineralization, (2) detected the presence of disseminated sphalerite mineralization in connection with a geochemical anomaly in the Vienna Limestone, and (3) detected framboidal pyrite in the Haney Limestone"-- Abstract, pp. ii-iii

Advisor(s)

Hagni, Richard D., 1931-2026

Committee Member(s)

Christianson, C. R.
Spreng, Alfred C., 1923-2012

Department(s)

Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology

Publisher

University of Missouri--Rolla

Publication Date

1975

Pagination

viii, 119 pages

Note about bibliography

Includes bibliographical references (pages 111-118)

Rights

© 1975 Prachon Chareonsri, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Thesis Number

T 4071

Print OCLC #

5984796

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