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Chemistry and Cathodoluminescence Properties of the Carbonate Minerals From the Tertiary Marine Sediments, SE Korea  

Son, Byeong-Kook (Korea Institute of Geoscience and Mineral Resources (KIGAM))
Kim, Hyun-Tae (Korea Institute of Geoscience and Mineral Resources(KIGAM))
Publication Information
Journal of the Mineralogical Society of Korea / v.17, no.2, 2004 , pp. 123-133 More about this Journal
Abstract
Carbonate minerals are examined by cathodoluminescence microscopy and chemical analysis to characterize the carbonate materials occurring in the Tertiary marine basin. The microscopic technique with cathodoluminescence gives new informations that are not obtainable by conventional microscopic techniques. The carbonate cements in sandstones appear to be uniform with transmitted light or with crossed prisms. but the inspection with cathololuminescence reveals foraminiferal tests and rhomb crystals in the carbonate cements. The chemical analysis indicates that the intense luminescence depends mainly on the presence of$ Mn^{ 2+}$ and $Fe^{2+}$ as activator ions, but the $Fe^{2+}$ also acts as an important quencher ion when Fe concentration in dolomite is over 10,000 ppm. The dolomites, which are rich in calcium, are formed at the early stage of diagenesis at a temperature of about 60 ~ $70^{\circ}C$.
Keywords
carbonate minerals; Tertiary marine basin; cathodoluminescence; sandstone; dolomite; diagenesis;
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