Title

Application of cathodoluminescence microscopy to the study of carbonatite-related fluorspar ores, host rock carbonatites and beneficiation products at Okorusu, Namibia

Abstract

Cathodoluminescence microscopy (CLM) is uniquely applicable to the study of carbonatite-related fluorspar ore deposits. The mineralogy of the carbonatites, sodic and potassic fenites, marbles, quartzites and fluorite ores are readily determined and characterized. Calcite, dolomite, apatite and fluorite were deposited dominantly under high-temperature conditions, and they exhibit strong cathodoluminescence (CL). At the Okorusu, Namibia, carbonatite complex and fluorspar mines, three types of carbonatites have been recognized by field mapping and laboratory CLM. The main carbonatite intrusion is fine grained and consists mainly of calcite. A later phase of pegmatitic carbonatite consists of calcite, magnetite, Fe-rich pyroxene, apatite and pyrochlore. Pyroxene carbonatities were recognized mainly through their study by CLM.

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Beneficiation; Calcite; Cathodoluminescence; Fluorspar; High Temperature Properties; Magnetite; Marble; Ore Analysis; Specimen Preparation; Cathodoluminescence Microscopy; Host Rock Carbonatites; Pyroxene Carbonatites; Mineralogy; Carbonatites; Cathodoluminescence Microscopy; Fluorspar

Geographic Coverage

Okorusu, Namibia

International Standard Serial Number (ISSN)

0747-9182

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2001 Society for Mining, Metallurgy and Exploration, All rights reserved.

This document is currently not available here.

Share

 
COinS