Characteristics of deposit types of vermiculit in Vietnam

http://jmes.humg.edu.vn/en/archives?article=199
  • Affiliations:

    1 Trường Đại học Mỏ-Địa chất;
    2 Viện Khoa học Địa chất & Khoáng sản

  • Received: 20th-Dec-2013
  • Revised: 17th-Jan-2014
  • Accepted: 30th-Jan-2014
  • Online: 30th-Jan-2014
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Abstract:

Vermiculite ores in Vietnam derived weathering, distributed in the high metamorphic terrane of endogenic and exogenetic geological formations, including 4 deposit types (DT): 1) Type vermiculite in the weathering crust (WC) of complex of gneiss - amphibolite that were migmatization with typical mineral parageneous association (TMPA) is vermiculite sustainable {Mg-Fe} {- kaolinite - ilite - goethite. This deposit type is abbreviated by (DT.Ver-I); 2) Type vermiculite in WC of gneiss - amphibolite complex penetrated by potassium-rich feldspar granitoid with TMPA is vermiculite {Mg} - kaolinite - ilite. This deposit type is abbreviated by (DT.Ver-II); 3) Type vermiculite weathered from metamorphic amphibole gneiss with TMPA is vermiculite-kaolinite-ilit-goethite. This type is abbreviated by (DT.Ver-III); 4) Type vermiculite derived weathering of mafic granulite, gabroamphibolite with TMPA is vermiculite-kaolinite-goethit-ilite. This deposit type is abbreviated by (DT.Ver-IV). Vermiculite ores in all above 4 deposit types have vertical zoning, to match the zoning of ore-bearing WC. In WC profile, vermiculite ores distributed in the following tropical weathered zones: The medium weathered zon (MWZ), strongly weathered with texture zon (SWZ) and the lower part of strongly weathered zone without texture (LPSWZWT).

How to Cite
Nguyen, L.Quang, Tran, T.Ngoc and Nguyen, T.Thanh 2014. Characteristics of deposit types of vermiculit in Vietnam (in Vietnamese). Journal of Mining and Earth Sciences. 45 (Jan, 2014).