sandstone and minerals in china

(PDF) Genesis of sandstone-type uranium deposits along

Sandstone-type U mineral resources are among the important sources for nuclear energy. The U deposits in the Ordos Basin in China form part of the northern segment of the sandstone-hosted Central ...

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Clay mineral content, type, and their effects on pore ...

2020-5-1  Clay minerals tend to be filled within pore throat systems, leading to the poor connectivity and affect the properties of tight sandstone reservoirs. The clay mineral content, especially illite, has a negative impact on pore throat connectivity, size distribution, porosity, and permeability of tight sandstones in the Hangjinqi area.

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Revision 2 Ordos Basin, north-central China: Implications ...

2021-7-21  2 Transformation of Fe-bearing minerals from Dongsheng sandstone-type uranium deposit, 3. Ordos Basin, north-central China: Implications for ore genesis 4. Liang Yue. 1,2,3, Yangquan Jiao1,2,*, Mostafa Fayek3, Liqun Wu1,2, Hui Rong1,2, Huili Xie4 5 1 Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences),

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Microscopic Failure Mechanism Analysis of Sandstone

2018-7-23  Mineral Composition Analysis of Sandstone. The composition of sandstone, especially the soluble matter, is critical to the formation and development of pores in a coal seam. To study the mineral and chemical composition of these sandstones, samples were taken from different areas of a 600 m below surface coal mine in Shandong Province (China).

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Origins of authigenic minerals and their impacts on ...

2018-6-5  Table 2. Carbon and oxygen-isotope values of carbonate minerals in the Chang-7 sandstone, Ordos Basin, China. Table 3. Statistics of mercury injection capillary pressure tests and the calculated pore-throat parameters of the Chang-7 sandstone, Ordos Basin, China.

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Rainbow Mountains In China's Danxia Landform

2013-8-1  The mountains are part of the Zhangye Danxia Landform Geological Park in China. Layers of different colored sandstone and minerals were pressed together over

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Sandstone Reservoirs SPE International Oil and Gas ...

Sandstone reservoirs are normally composed of stable minerals (e.g., quartz, feldspar and rock fragments), accessory minerals and pores saturated with fluids. To be classified as sandstone, individual sand grains must be between 1/8 and 2 mm in diameter.

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These Rainbow Mountains Are China's Secret Geological

2013-12-20  At the Zhangye Danxia Landform Geological Park in Gansu, China, tourists flock to see China's own version of the Grand Canyon: A mountain range of

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Formation and chemo-mechanical characteristics of weak ...

2020-6-13  Sedimentary rocks with alternating mudstone and sandstone sequence are susceptible to landslides even under very gentle slope inclinations. Continued occurrences of such landslides in Nanjiang, South Western part of China, bring out the necessity for more understanding of their failure mechanism. In this study, we present a series of investigations on the physical, chemical, and

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Depositional and Diagenetic Controls on Pore Structure of ...

2015-3-29  1. Introduction. The Kuqa foreland, which connects the southern Tianshan orogenic belt with the northern part of the Tarim subplate, is a peripheral foreland basin (Jin et al., 2008).The Kuqa depression is a primary gas‐producing area in the Tarim Basin (Tang et al., 2014), where several giant gas fields have been discovered, including Kela 2, Dina 2, Yinan 2, Yaha, Dabei and Keshen (Dai et ...

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(PDF) Genesis of sandstone-type uranium deposits along

Sandstone-type U mineral resources are among the important sources for nuclear energy. The U deposits in the Ordos Basin in China form part of the northern segment of the sandstone-hosted Central ...

Read More
Mineral paragenesis and textures associated with

Abstract We present a first paragenetic study of the Wuyier, Wuyisan, Wuyiyi and Shihongtan sandstone-hosted roll-front uranium deposits, northwest China. The mineralization is hosted by Lower–Middle Jurassic coarse- to medium-grained sandstones, which are dark-gray to black due to a mixture of ore minerals and carbonaceous debris. The sandstone is alluvial fan-braided river facies.

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Revision 2 Ordos Basin, north-central China: Implications ...

2021-7-21  2 Transformation of Fe-bearing minerals from Dongsheng sandstone-type uranium deposit, 3. Ordos Basin, north-central China: Implications for ore genesis 4. Liang Yue. 1,2,3, Yangquan Jiao1,2,*, Mostafa Fayek3, Liqun Wu1,2, Hui Rong1,2, Huili Xie4 5 1 Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences),

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(PDF) Sandstone type uranium deposits in the Ordos Basin ...

2017-5-24  This paper provides a comprehensive review on studies of sandstone type uranium deposits in the Ordos Basin, Northwest China. As the second largest sedimentary basin, the

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Origins of authigenic minerals and their impacts on ...

2018-6-5  Table 2. Carbon and oxygen-isotope values of carbonate minerals in the Chang-7 sandstone, Ordos Basin, China. Table 3. Statistics of mercury injection capillary pressure tests and the calculated pore-throat parameters of the Chang-7 sandstone, Ordos Basin, China.

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A New Thermal Conductivity Estimation Model for

2021-8-26  Using the thermal conductivity entropy of rocks and minerals, a prediction model (TCEM) for the thermal conductivity of sandstone and mudstone at the Gemudi syncline in western Guizhou, China, is established: sandstone λ t = 0.6738S λ − 0.3832; mudstone

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(PDF) Study on Uranium Occurrence State of Sandstone

2020-7-3  The sandstone-hosted Qianjiadian uranium deposit, hosted in the Upper Cretaceous Yaojia Formation in the Qianjiadian area, Songliao Basin, NE China, has been studied for over twenty years.

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Experimental Weathering of Weak Sandstone Without

2016-5-13  The Yungang Grottoes were constructed on Jurassic strata, and the lithology therein is characterized mainly by sandstone. The main physical and mechanical characteristics of the original sandstone were analyzed and are presented in Table 1.The petrological, physical and mechanical characteristics were defined through the methods described in Sects. 2.1 and 2.2, and the simulating

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The Rainbow Mountains Of China Are Earth's Paint Palette

2016-3-3  The Rainbow Mountains are cretaceous sandstones and siltstones that were deposited in China before the Himalayan Mountains were formed. The sand and silt was deposited with iron and trace minerals ...

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These Rainbow Mountains Are China's Secret Geological

2013-12-20  At the Zhangye Danxia Landform Geological Park in Gansu, China, tourists flock to see China's own version of the Grand Canyon: A mountain range of

Read More
(PDF) Genesis of sandstone-type uranium deposits along

Sandstone-type U mineral resources are among the important sources for nuclear energy. The U deposits in the Ordos Basin in China form part of the northern segment of the sandstone-hosted Central ...

Read More
(PDF) Sandstone type uranium deposits in the Ordos Basin ...

2017-5-24  This paper provides a comprehensive review on studies of sandstone type uranium deposits in the Ordos Basin, Northwest China. As the second largest sedimentary basin, the

Read More
Mineral paragenesis and textures associated with

Abstract We present a first paragenetic study of the Wuyier, Wuyisan, Wuyiyi and Shihongtan sandstone-hosted roll-front uranium deposits, northwest China. The mineralization is hosted by Lower–Middle Jurassic coarse- to medium-grained sandstones, which are dark-gray to black due to a mixture of ore minerals and carbonaceous debris. The sandstone is alluvial fan-braided river facies.

Read More
Revision 2 Ordos Basin, north-central China: Implications ...

2021-7-21  2 Transformation of Fe-bearing minerals from Dongsheng sandstone-type uranium deposit, 3. Ordos Basin, north-central China: Implications for ore genesis 4. Liang Yue. 1,2,3, Yangquan Jiao1,2,*, Mostafa Fayek3, Liqun Wu1,2, Hui Rong1,2, Huili Xie4 5 1 Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences),

Read More
A New Thermal Conductivity Estimation Model for

2021-8-26  Using the thermal conductivity entropy of rocks and minerals, a prediction model (TCEM) for the thermal conductivity of sandstone and mudstone at the Gemudi syncline in western Guizhou, China, is established: sandstone λ t = 0.6738S λ − 0.3832; mudstone

Read More
(PDF) Study on Uranium Occurrence State of Sandstone

2020-7-3  The sandstone-hosted Qianjiadian uranium deposit, hosted in the Upper Cretaceous Yaojia Formation in the Qianjiadian area, Songliao Basin, NE China, has been studied for over twenty years.

Read More
Rainbow Mountains In China's Danxia Landform

2013-8-1  The mountains are part of the Zhangye Danxia Landform Geological Park in China. Layers of different colored sandstone and minerals were pressed together over 24 million years and then buckled up by tectonic plates, according to the Telegraph.

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These Rainbow Mountains Are China's Secret Geological

2013-12-20  At the Zhangye Danxia Landform Geological Park in Gansu, China, tourists flock to see China's own version of the Grand Canyon: A mountain range of

Read More
Quality grading system for tight sandstone reservoirs in ...

2021-7-30  A grading system for tight sandstone reservoir quality is needed to predict tight oil enrichment areas and assess the resources. To explore the establishment of the grading system, a variety of research methods, such as rate-controlled mercury injection, conventional mercury injection, contact angle measurement, and the mechanical equilibrium principle, are integrated to determine the

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Heavy Minerals in Certain Old Red Sandstone and Silurian ...

THE Wenlock Limestone outcrops intermittently within the inlier of Silurian rocks situated between Usk and Pontypool, and the ‘Cornstones’1 as discontinuous bands within the Old Red Sandstone ...

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