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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 Mary Kathleen, Queensland ： ウィキペディア英語版 Mary Kathleen, Queensland Mary Kathleen was a mining settlement in the northwestern part of Queensland, Australia. It is located in the Selwyn Range between Mount Isa and Cloncurry. Mary Kathleen was first settled during the 1860s. ==Uranium mine== In 1954, a significant uranium deposit was discovered at the site (20.7470°S, 140.0123°E). Mary Kathleen Uranium Ltd. built a mine, with 4,080 tonnes of uranium oxide being extracted between 1958 and 1963. The mine then lay idle until 1974, when it was reopened. The second phase of production began in 1976 and the mine was finally closed down in 1982 after a further production of 4,802 tonnes of uranium oxide. A total of 31 million tonnes of ore were extracted from the mine until it was exhausted. Processing occurred on-site. Mary Kathleen's uranium deposits originated from contact metasomatic processes. This type of occurrence is uncommon, with Mary Kathleen being the only commercial example. The uraninite here was conglomerated with garnet.〔 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「Mary Kathleen, Queensland」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.