Econ. Environ. Geol. 2006; 39(6): 653-662

Published online December 31, 2006

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Occurrence and Genetic Environments of Quartz Veins from the Jukwangri area, Hwawon-myeon, Jeollanamdo, Republic of Korea

Bong Chul Yoo1, Hyun Koo Lee1* and Dong Ho Choi2

1Department of geology and environmental sciences, Chungnam National University
2Korea Resources Corporation

Correspondence to :

Hyun Koo Lee

phklee@cnu.ac.kr

Received: October 4, 2006; Accepted: December 19, 2006

Abstract

Quartz veins from the Jukwangri area of Hwawon-myeon are epithermal quartz veins that are filling the NW or NE-trending faults within Precambrian metasedimentary rocks. Based on their prolongation and ore grades, No.1 quartz vein can be traced for about 200 m and varies 0.1 to 3 m in thickness. Mineralization of No.1 quartz vein can be divided into hypogene and supergene stages. Hypogene stage is associated with hydrothermal alteration minerals(phyllic and argillic zones) such as illite, sericite and sulfides such as pyrite, arsenopyrite, sphalerite, chalcopyrite, galena, argentian tetrahedrite. Supergene stage is composed of Fe-Mn oxide, Zn-Fe oxide and Pb oxide. Fluid inclusion data indicate that homogenization temperature and salinity of hypogene stage range from 187 to 306oC and from 0.0 to 6.2 wt.% eq. NaCl, respectively. They suggest that ore forming fluids were progressively cooled and diluted from mixing with meteoric water. Oxygen(-4.1~4.1 ‰) and hydrogen(-107~-88 ‰) isotope compositions indicated that hydrothermal fluids were derived from meteoric and evolved by progressive mixing with meteoric water during mineralization.

Keywords Jukwangri area, quartz vein, mineralization, fluid inclusion, stable isotope

Article

Econ. Environ. Geol. 2006; 39(6): 653-662

Published online December 31, 2006

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Occurrence and Genetic Environments of Quartz Veins from the Jukwangri area, Hwawon-myeon, Jeollanamdo, Republic of Korea

Bong Chul Yoo1, Hyun Koo Lee1* and Dong Ho Choi2

1Department of geology and environmental sciences, Chungnam National University
2Korea Resources Corporation

Correspondence to:

Hyun Koo Lee

phklee@cnu.ac.kr

Received: October 4, 2006; Accepted: December 19, 2006

Abstract

Quartz veins from the Jukwangri area of Hwawon-myeon are epithermal quartz veins that are filling the NW or NE-trending faults within Precambrian metasedimentary rocks. Based on their prolongation and ore grades, No.1 quartz vein can be traced for about 200 m and varies 0.1 to 3 m in thickness. Mineralization of No.1 quartz vein can be divided into hypogene and supergene stages. Hypogene stage is associated with hydrothermal alteration minerals(phyllic and argillic zones) such as illite, sericite and sulfides such as pyrite, arsenopyrite, sphalerite, chalcopyrite, galena, argentian tetrahedrite. Supergene stage is composed of Fe-Mn oxide, Zn-Fe oxide and Pb oxide. Fluid inclusion data indicate that homogenization temperature and salinity of hypogene stage range from 187 to 306oC and from 0.0 to 6.2 wt.% eq. NaCl, respectively. They suggest that ore forming fluids were progressively cooled and diluted from mixing with meteoric water. Oxygen(-4.1~4.1 ‰) and hydrogen(-107~-88 ‰) isotope compositions indicated that hydrothermal fluids were derived from meteoric and evolved by progressive mixing with meteoric water during mineralization.

Keywords Jukwangri area, quartz vein, mineralization, fluid inclusion, stable isotope

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

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