ACTINIDES IN GEOLOGY, ENERGY, AND THE ENVIRONMENT Compositional variation and timing of aluminum phosphate-sulfate minerals in the basement rocks along the P2 fault and in association with the McArthur River uranium deposit, Athabasca Basin, Saskatchewan, Canada†
ACTINIDES IN GEOLOGY, ENERGY, AND THE ENVIRONMENT Compositional variation and timing of aluminum phosphate-sulfate minerals in the basement rocks along the P2 fault and in association with the McArthur River uranium deposit, Athabasca Basin, Saskatchewan, Canada†
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地质、能源和环境中的锕系元素沿着 P2 断层的基岩中以及与加拿大萨斯喀彻温省阿萨巴斯卡盆地麦克阿瑟河铀矿床有关的磷酸铝-硫酸盐矿物的成分变化和时间†
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发表时间：
2015
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影响因子：
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通讯作者：
AdlAkhA
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作者：
Erin;E.;AdlAkhA
阿萨巴斯卡盆地拥有世界级铀矿床，如麦克阿瑟河铀矿床。本文介绍了麦克阿瑟河矿床主要赋矿断裂P2断裂沿线变质沉积岩中磷酸铝-硫酸盐(APS)矿物的赋存状态。它将P2断层沿线的APS矿物与本研究所研究的断层外的APS矿物，以及来自阿萨巴斯卡盆地和世界其他古元古代盆地的APS矿物进行了比较。APS矿物沿P2断裂带常见，但在P2断裂带以外的基底和阿萨巴斯卡砂岩与基底之间的不整合处很少见。沿P2断裂的APS矿物赋存于闪锌矿(±伊利石、镁镁闪石)中，分带富锶、钙、S核(硅铝榴石、孔雀石和高岭石之间的固溶体)，轻稀土和富磷边缘(主要由高岭土和伊利石组成)富锶、富钙、富S(高闪锌矿成分)。沿不整合面上产出的闪锌矿-孔雀石-方晶石表明它们形成于阿萨巴斯卡砂岩沉积之前。沿所研究的P2断裂的整个走向(7公里)，包括矿化带和非矿化区，均发现了佛罗伦石APS矿物，但在矿化带中为42-，这表明它们可用于识别与铀矿化有关的富饶的基底构造。
The Athabasca Basin hosts world class uranium deposits, such as the McArthur River deposit. This paper presents the occurrence of aluminum phosphate-sulfate (APS) minerals in the metasedimentary rocks along the P2 fault, the main ore-hosting fault of the McArthur River deposit. It compares the APS minerals along the P2 fault with those outside the fault, examined in this study, and those from other deposits of the Athabasca Basin and from other Paleoto Mesoproterozoic basins worldwide. APS minerals are common along the P2 fault but rare outside of the P2 fault zone in the basement and along the unconformity between the Athabasca sandstones and the basement. The APS minerals along the P2 fault occur with sudoite (± illite, magnesiofoitite) and are zoned with Sr-, Ca-, and S-rich cores (solid solution between svanbergite, crandallite, and goyazite) and LREEand P-rich rims (close consisting predominantly of kaolin and illite) are Sr-, Ca-, and S-rich (high svanbergite component) The occurrence of svanbergite-crandallite-goyazite along the unconformity suggests their formabefore the deposition of the Athabasca sandstones. Florencitic APS minerals are found along the entire studied strike length (7 km) of the P2 fault, including the ore zone and non-mineralized areas, but are 4 2– in the ore zone, suggestin the basement suggests their use in identifying fertile basement structures associated with uranium mineralization.