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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Madre de Dios Mine ： ウィキペディア英語版 Madre de Dios Mine Madre de Dios, located east the town of Máfil in Chile, is a placer deposit of gold that has been mined several times since its discovery in 1556. The bedrock of the Madre de Dios area is made of metamorphic and crystalline rocks of Paleozoic age all part of the Bahía Mansa Metamorphic Complex. These rocks are covered with thick layers of glacial gravel from the Tertiary. Gold eroded from the gravel have deposited in nearby streams, thus giving origin to the placer deposit. The deposit was discovered by Spaniards in 1556 but was not mined extensivelly until the late 19th century. From 1898 to 1936 a total of 2,6 tonnes of gold were produced. The deposits are currently being prospected by the Global Gold corporation. ==Sources== *(Report on the Madre de Dios Placer Gold Project, Chile ) *(Crónica del Reino de Chile ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Madre de Dios Mine」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.