首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Uranium mineralization in the sandstones of Dharamsala, Tileli area, Mandi district, Himachal Pradesh, India
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Uranium mineralization in the sandstones of Dharamsala, Tileli area, Mandi district, Himachal Pradesh, India

机译:印度喜马al尔邦Mandi区Tileli地区Dharamsala砂岩中的铀矿化

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We report here the discovery of sandstone-hosted uranium mineralization In the basal part of Upper Dharamsala Formation in Mandi district, Himachal Pradesh, Stratigraphically, the Tertiary sedimentary rocks of Dharamsala Group (Upper Eocene to Lower Miocene; 1400 to 1900 m thick In Tileli area and locally up to 3950 m thick) are bounded by the Main Boundary Thrust (MBT) on the north-east and Palampur Thrust on the south-west, with several other crisscross thrusts, The beds dip 30 degrees-55 degrees north-east, Uranium mineralization was noted at Tileli (eU(3)O(8), 0.086%), and was explored by shielded probe logging of rocks exposed in five trenches. The trench face samples assayed 0.01-0.27% eU(3)O(8), and 0.011-0.076% U3O8 (beta/gamma) with negligible ThO2, The radioactive zone is 540 m long and 5-40 m thick. Radioactivity is due to uraninite and uranophane disseminated in radioactive pockets which are enclosed in hydrated iron oxide, at plates admired with clay. In addition to Tileli, other significant uranium manifestations are Rohin Khad (50 m x 10-15 m); eU(3)O(8), 0.069%), Garlwar (70 m x 5-8 m; eU(3)O(8), 0.063%), Chah Ka Dora (80 m x 10-15 m; eU(3)O(8), 0.036%), Kalthar (50 m x 5-8 m), Mangwana (5 m x 2 m; eU(3)O(8), 0.88%) and Manjkhetar (eU(3)O(8) values from grab samples), This study opens up a new environment in Dharamsala basin to locate possible new uranium prospects. [References: 3]
机译:我们在此报告在地层上喜马拉雅邦Mandi地区上达兰萨拉组上层基底的砂岩中铀矿化的发现,地层上,达兰萨拉组的第三系沉积岩(上始新​​世至下中新世;在Tileli地区厚1400至1900 m)且局部厚度达3950 m)以东北的主边界推力(MBT)和西南的Palampur推力为边界,并伴有其他纵横交错的推力,床层向东北倾斜30度至55度,在Tileli(eU(3)O(8),0.086%)处发现了铀矿化作用,并通过屏蔽探针测井对暴露在五个沟中的岩石进行了勘探。沟槽面样品的ThO2含量可忽略不计,含量为0.01-0.27%eU(3)O(8)和0.011-0.076%U3O8(beta /γ),放射性区长540 m,厚5-40 m。放射性是由于在包裹粘土的平板上,尿囊石和铀酰phane散布在被水合氧化铁包裹的放射性囊中。除Tileli外,其他重要的铀矿表现为Rohin Khad(50 m x 10-15 m)。 eU(3)O(8),0.069%),Garlwar(70 mx 5-8 m; eU(3)O(8),0.063%),查家朵拉(80 mx 10-15 m; eU(3) O(8),0.036%),Kalthar(50 mx 5-8 m),Mangwana(5 mx 2 m; eU(3)O(8),0.88%)和Manjkhetar(eU(3)O(8)值从抓取样品中提取),这项研究为达兰萨拉盆地开辟了一个新的环境,以寻找可能的新铀矿前景。 [参考:3]

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