东帝汶国金属矿产资源潜力与矿业投资环境

东帝汶国的成矿地质条件较优越，矿产资源较丰富。铬铁矿化在马纳图托省、马努法伊省和包考省有明显的找矿信息，成矿环境受环太平洋成矿带超镁铁质岩带控制。其中位于马纳托图省Hili Manu地区的蛇纹石化超基性岩中呈豆荚状产出铬铁矿，Cr2O3含量在36%～51%之间，显示出较好的资源潜力。锰矿化主要分布于包考省、维克克省和马纳图托省，为海相层控型，其中位于马纳托图省Vemasse地区的锰矿床规模较大，品位较高，具有成为中—大型锰矿床的潜力。铜矿化出露于包考省、维克克省、科瓦利马省、马努法伊省、马纳图托省和劳滕省，矿化作用与蛇绿岩套有关，其中位于维克克省Ossu地区的蛇纹岩体，存在与蛇纹石化基性—超基性岩石组合有关的铜/金/银矿化露头，暗示其下可能隐伏着更大的硫化物矿化体。金矿化既有热液脉型，又有浅成低温热液蚀变浸染型，更有河流砂矿型，分布范围广，品位中等到较富，其中马努法伊省Turiscai地区 Sue河、Laclo河及Cler河沿岸砂砾层中存在找寻砂金矿的前景，河流上游存在原生金矿的可能。综上所述，东帝汶国具有明显的找矿前景、矿产资源开发潜力和较好的矿业投资环境，建议加大工作力度，把握机会，适时介入。

An analysis of metal mineral resource potential and mining investment environment in East Timor

The metallogenic geological condition of East Timor is fairly favorable, and many different types of mineral resources have been found there. Chromite mineralization was found in Manatuto，Manufahi，Baucau provinces，and this type of chromite mineralization is hosted in the ultramafic rocks within the Circum Pacific belt. In Hili Manu district of Manatuto province，the podiform chromites with Cr2O3 grade between 36%~ 51% occur in the serpentinized ultramafic rocks，showing great mineral exploration potential. The manganese mineralization associated with the marine strata was mainly found in Baucau, Viqueque and Manatuto provinces. The manganese deposit located in Vemasse region of Manatuto province is high in grade and large in size, with great potential to be a middle to large manganese deposit. Copper mineralization outcrops were found in Baucau，Viqueque，Covalima，Manufahi，Manatuto and Lautem provinces and hosted in ophiolite suite. Cu-Au-Ag mineralization occurs in serpentinized mafic - ultramafic rocks, suggesting that a large sulfide-mineralized body may exist under the serpentinite rock in the Ossu region of Viqueque province. Middle to high-grade old mineralization was found not only in quartz veins but also in altered disseminated chalcopyrite and pyrite. There are prospects to find gold placer in the sandy gravel strata in Sue River，Laclo River and Cler River of Turiscai district in Manufahi province. More importantly，it gives the possibilities to find primary gold deposits along the upper part of the rivers. In summary，the geological setting in East Timor shows good potential of different types of mineralization. It is suggested that more exploration should be done in East Timor. Now，the investment environment of mining in East Timor is good and hence the authors suggest intervening at the right time.