Research on Genesis and Prospecting Indicators of Gold Deposits in Madagascar
Received date: 2013-11-29
Revised date: 2014-02-17
Online published: 2014-08-26
The gold deposit in the Madagascar is a classical quartz vein type gold deposit，the gold mineralization developed in the quartz vein and its wall rock.The gold deposit is intersected by major NNW trending shear zones and east-trending fracture sets，gold mineralization is associated with Pan-African orogeny.In the Pan-African orogeny，there are intensive tectonic-magmatic in Madagascar，results partial melting of the lower crust，a large amount of fluids and granitic magma are formed.In the process of the ascent of the fluids，mixed shallow-sourced meteoric fluid，the ore-forming fluids would have entered the favourable faults，resulting in mineralization.
YANG Xi’an , LIU Shanbao , ZHAO Xiandong . Research on Genesis and Prospecting Indicators of Gold Deposits in Madagascar[J]. Gold Science and Technology, 2014 , 22(2) : 1 -6 . DOI: 10.3969/j.issn.1005-2518.2014.02.001
［1］ Collins A S，Razakamanana T，Windley B F.Neoproterozoic extensional detachment in central Madagascar：Implications for the collapse of the East African Orogen［J］.Geological Magazine，2000，137（1）：39-51.
［2］ Collins A S，Windley B F.The tectonic evolution of central and northern Madagascar and its place in the final assembly of Gondwana［J］.Journal of Geology，2002，110（3）：325-340.
［3］ Collins A S，Fitzsimons I C W，Hulscher B.Structure of the eastern margin of the East African Orogen in central Madagascar［J］.Precambrian Research，2003，123（2）：111-133.
［4］ Cox R，Armstrong R A，Ashwal L D.Sedimentology，geochronology and provenance of the proterozoic itremo group，central Madagascar，and implications for pre-Gondwana palaeogeography［J］.Journal of the Geological Society，1998，155（6）：1009-1024.
［5］ De Wit M J，Bowring S A，Ashwal L D，et al.Age and tectonic evolution of Neoproterozoic ductile shear zones in southwestern Madagascar，with implications for Gondwana studies［J］.Tectonics，2001，20（1）：1-45.
［6］ Fitzsimons I C W.A review of tectonic events in the East Antarctic Shield and their implications for Gondwana and earlier supercontinents［J］.Journal of African Earth Sciences，2000，31（1）：3-23.
［7］ Handke M J，Tucker R D，Ashwal L D.Neoproterozoic continental arc magmatism in west-central Madagascar［J］.Geology，1999，27（4）：351-354.
［8］ Hoffman P F.Did the breakout of Laurentia turn Gondwanaland inside-out［J］.Science，1991，（5011）：1409-1412.
［9］ KronerA，Braun I，Jaeckel P.Zircon geochronology of anatecticmelts and residues from a highgrade pelitic assemblage at Ihosy，southern Madagascar：Evidence for Pan-African granuulite metamorphism［J］.Geological Magazine，1996，133（3）：311-323.
［10］ Randriamanantenasoa A F.E tude de la Serie de Maevatanana，Secteur Maevatanana et Environs，Nord-Ouest de Madagascar［M］.Antananarivo：These Universite Antananarivo，1990.
［11］ Rambolamanana G，Suhadolc P，Panza G F.Simultaneous inversion of hypocentral parameters and structure velocity of the central region of Madagascar as a premise for the mitigation of seismic hazard in Antananarivo［J］.Pure and Applied Geophysics，1997，149（4）：707-730.
［12］ Rambeloson A R.Gold in Madagascar［J］.Gondwana Research，1999，2（3）：423-431.
［13］ Nawaratne S W，Dissanayake C B.Gold occurrences in Madagascar，south India and Sri Lanka：Significance of a possible Pan-African event［J］.Gondwana Research，2001，4（3）：367-375.
［14］ Andrianjakavah P，Salvi S，Beziat D，et al.Textural and fluid inclusion constraints on the origin of the banded-iron-formation-hosted gold deposits at Maevatanana，central Madagascar［J］.Miner Deposita，2007，42：385-398.
［15］ Vinyu M L，Jelsma H A，Fei R.Timing between granitoid emplacement and associated gold mineralization：Examples from the ca.2.7 Ga Harare-Shamva greenstone belt，northern Zimbabwe［J］.Canadian Journal of Earth Sciences，1996，33（7）：981-992.
［16］ Sarma D S，Mcnaughton N J，Fletcher I R，et al.Timing of gold mineralization in the Hutti gold deposit，Dharwar Craton，South India［J］.Economic Geology，2008，103（8）：1715-1727.
［17］ Bjerkgard T，Stein H J，Bingen B，et al.The Niassa Gold Belt，northern Mozambique：A segment of a continental-scale Pan-African gold-bearing structure［J］.Journal of African Earth Sciences，2009，53（1）：45-58.
［18］ Mishra B，Palb N，Sarbadhikari A B.Fluid inclusion characteristics of the Uti gold deposit，Hutti-Maski greenstone belt，southern India［J］.Ore Geology Reviews，2005，（1）：1-16.［19］ Dubessy J，Derome D，Sausse J.Numerical modelling of fluid mixings in the H2O-NaCl system application to the Nort Caramal U prospect （Australia）［J］.Chemical Geology，2003，194（1）：25-39.
［20］ Buchholz P，Herzig P，Friedrich G，et al.Granite-hosted gold mineralization in the Midlands greenstone belt：A new type of low-grade gold deposit in Zimbabwe［J］.Mineralium Deposita，1998，33（5）：437-460.
［21］ Vos I M A，Bierlein F P，Standing J S，et al.The goology and mineralisation at the Golden Pride gold deposit，Nzega Greenstone Belt，Tanzania［J］.Mineralium Deposita，2009，44（7）：751-764.
［22］ Boer R H，Meyer F M，Robb L J，et al.Mesothermal-type mineralizatioin in the Sabie-Pilgrim’s Rest gold field，South Africa［J］.Economic Geology，1995，90（4）：860-876.
［23］ Kutina J.Tectonic development and metallogeny of Madagascar with reference to the fracture pattern of the Indian Ocean［J］.Geological Society of Amarica Bulletin，1975，86（4）：582-592.
［24］ Lardeaux J M，Martelat J E，Nicollet C，et al.Metamorphism and tectonics in southern Madagascar：an overview［J］. Gondwana Research，1999，2（3）：355-362.
［25］ 杨喜安，赵国春，于虎，等.乳山金青顶、三甲、英格庄金矿成矿地质特征与找矿预测［J］.黄金科学技术，2009，17（4）：16-24.
［26］ 杨喜安，刘善宝，李海松，等.马达加斯加Maevatanana地区金矿床研究进展［J］.地质科技情报，2013，32（5）：133-137.
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