TAILIEUCHUNG - Báo cáo " Formations of endogenous ore deposits and mineralization in Vietnam "

Formations of endogenous ore deposits and mineralization are widely distributed in Vietnam. Detailed studies allow for distinguishing 30 ore formations representing 9 groups of mineral raw - materials: Cr, Ti, Fe, Sn - W, Mo, Pb - Zn, Au, Sb - Hg. Three of presented formations are of magmatic affiliation, one is pegmatitic, three others belong to skarn mineralization and the remaining ones are of hydrothermal - volcanic and controversial origin. Three metallogenic epochs can be distinguished: Proterozoic, Palaeozoic and Mesozoic - Cainozoic. Taking into consideration the recent structural data and economic importance along with the geochemical units. | VNU Journal of Science Earth Sciences 24 2008 26-31 Formations of endogenous ore deposits and mineralization in Vietnam Nguyen Van Nhan College of Science VNU Received 14 January 2008 received in revised form 05 March 2008 Abstract. Formations of endogenous ore deposits and mineralization are widely distributed in Vietnam. Detailed studies allow for distinguishing 30 ore formations representing 9 groups of mineral raw - materials Cr Ti Fe Sn - W Mo Pb - Zn Au Sb - Hg. Three of presented formations are of magmatic affiliation one is pegmatitic three others belong to skarn mineralization and the remaining ones are of hydrothermal - volcanic and controversial origin. Three metallogenic epochs can be distinguished Proterozoic Palaeozoic and Mesozoic - Cainozoic. Taking into consideration the recent structural data and economic importance along with the geochemical units can be distinguished in Vietnam 1. Sialic - mafic Viet Bac 2. Mafic Tay Bac 3. Sialic Truong Son 4. Mafic -metamorphic Kontum 5. Sialic - alkaline Dalat - Nam Bo. Keywords Endogenous ore deposit Mineralization. Vietnam and other countries of SE Asia cover an outstanding area of the crossing of two structural and metallogenic belts Pacific and Mediterranean. Simultaneously this area is an active continental margin Abundant and variable ore mineralization is known with the famous W - Sn belt and deposits of Cr Cu Zn - Pb Au Sb - Hg Bi Mo and REE. Geological history of the investigated area is influenced by the development of the two large adjacent structures Southern China platform and Indo - China fold belt. Typical feature of Vietnam area is the Mesozoic and Cainozoic activization structures. Numerous intrusions ranging in age from Proterozoic to Cainozoic were formed in tectono - magmatic cycles operating within the fold belts and activated areas. Detailed studies allow for distinguishing 30 ore formations representing 9 groups of mineral raw - materials Cr Ti Fe Fig. 1 Sn -W Fig. 2 Mo Zn - Pb Au Sb -

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