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Occurrence and Mineralogical Characteristics of Dolomite Ores from South Korea

국내 백운석 광석의 산상과 광물학적 특성

  • Received : 2013.06.03
  • Accepted : 2013.06.21
  • Published : 2013.06.30

Abstract

The occurrence, mineralogical characteristics, and origin of the dolomite ores were investigated from major dolomite mines in South Korea. Mineralogical and textural properties of the ores and associated minerals were analyzed using X-ray diffraction, thin section petrography, and scanning electron microscopy. Dolomite ores were light to dark gray in color and mainly composed of dolomite in varying particle size with minor amounts of calcite, quartz and micas. Calcite, quartz, illite, feldspar, kaolin minerals, and chlorite occurred in local veins, dikes and alteration zones. Sepiolite and wollastonite occurred in the altered part of some mine. Asbestos minerals such as chrysotile and tremolite, however, were not identified in the present study. Reddish brown to yellow clay materials were mainly composed of illite, occasionally associated with kaolin minerals and smectite. These clay minerals might be a product of the local hydrothermal alteration related to the dyke intrusion and subsequent weathering. As well indicated in the previous studies, mineral composition, texture, and occurrence of the dolostone beds suggest their formation through the diagenesis of carbonate sediments deposited in the shallow sea during the Precambrian to Paleozoic period.

Keywords

dolomite;dolostone;occurrence;genesis;asbestos

References

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Cited by

  1. Occurrence and Mineralogical Characteristics of Asbestos in Dolostone at Ungdo, Seosan vol.47, pp.5, 2014, https://doi.org/10.9719/EEG.2014.47.5.489
  2. Mineralogical Characteristic and Occurrence of Tremolite and Actinolite in the Dong-A mine, Korea vol.28, pp.4, 2015, https://doi.org/10.9727/jmsk.2015.28.4.333

Acknowledgement

Supported by : 부산대학교