Micro-XRF Analysis On The Relationship Between Pyrite And Uranium Mineralization In Sandstone-Hosted Uranium Deposits

Song, Hao

doi:10.46770/as.2022.237

Cited by 4 publications

(4 citation statements)

References 31 publications

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“…Second, the crust and mantle materials on the margin of the ancient continental region have strong material interactions and frequent magmatic activities, which can create favorable geological conditions for the large-scale enrichment of ore-forming materials. Therefore, the marginal zone of the ancient continent often had favorable uranium polymetallic mineralization conditions that controlled the temporal and spatial distribution of uranium polymetallic deposits [30,31]. Regionally, a large number of late Paleoproterozoic (2.0-1.8 Ga) uranium polymetallic deposits are distributed along the collisional orogenic belt along the marginal zone of the ancient continental North China Craton.…”

Section: Constraints From Zircon Ages Paleoproterozoic U Mineralizationmentioning

confidence: 99%

“…Regionally, a large number of late Paleoproterozoic (2.0-1.8 Ga) uranium polymetallic deposits are distributed along the collisional orogenic belt along the marginal zone of the ancient continental North China Craton. Typical deposits include the Lianshanguan uranium deposit in Liaoning Province, the Pinglu uranium deposit in Shanxi Province, and the Hongshiquan uranium deposit in Gansu Province [30,31]. In conclusion, the chronological research results of U-rich granitic pegmatite in this study show that uranium mineralization in the late Paleoproterozoic (1829 ± 11 and 1826 ± 7.9 Ma) also occurred in the Xiaoqinling area of the southern margin of the North China Craton, which implies that the tectonicmagmatic-mineralization events were produced during the ultimate cratonization process of the North China Craton in the late Paleoproterozoic (2.0-1.8 Ga) [32][33][34].…”

Section: Constraints From Zircon Ages Paleoproterozoic U Mineralizationmentioning

confidence: 99%

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Paleoproterozoic U Mineralization in Huayangchuan Deposit, Xiaoqinling Area: Evidence from the U–Rich Granitic Pegmatite

Li,

et al. 2023

Minerals

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The Huayangchuan uranium deposit, located in the west of the Xiaoqinling belt on the southern margin of the North China Craton, is a large U–Nb–Pb deposit accompanied with rare–earth elements. The Huayangchuan uranium deposit, discovered in the 1950s, has long been known as a carbonatite–type uranium deposit. Recently, new geological work has found uranium mineralization in many granitic pegmatite veins in the Huayangchuan deposit and adjacent areas. Here, we report a systematic investigation of the petrography, whole–rock geochemistry, zircon U–Pb ages, and in situ Lu–Hf isotopic characteristics of newly discovered U–rich granitic pegmatite veins in the west of Huayangchuan deposit. The petrological results showed that the lithology of the samples is granite pegmatite. The U–Pb ages of zircon were 1826.3 ± 7.9 and 1829 ± 11 Ma. Microscopically, the paragenetic characteristics of zircon, betafite, and uraninite exist in the intergranular fissures of K–feldspar and quartz, reflecting metallogenic phenomena in the rock formation process. Almost all whole–rock samples were rich in SiO2 (64.37−70.69 wt.%), total alkalis (K2O + Na2O = 8.50–10.30 wt.%), and Al2O3 (12.20–14.41 wt.%) but poor in TiO2 (0.23–0.73 wt.%), MgO (0.38–0.90 wt.%), CaO (1.23–2.22 wt.%), P2O5 (0.14–0.83 wt.%), and MnO (0.04–0.57 wt.%). Additionally, they showed enrichment of LILEs (such as Rb, Ba, Th, U, and K), depletion of HFSEs (such as Ta, P, Ti, and Hf), and no alkaline dark minerals, and the characteristics are intraplate A1–type granite. The A1–type granite displayed low zircon εHf(t) values (−19.42–−15.02) with zircon two–stage Hf model aged 3.10–2.76 Ga, indicating that the U–rich granitic pegmatite was derived predominantly from partial melting of the ancient continental crust (such as the early Taihua group formed in Archean–Neoarchean). Combined with the above results and regional geological data, the U–rich granitic pegmatite discovered in the Huayangchuan deposit was formed in a post–collisional regime after the Luliang movement in the late Paleoproterozoic. This study suggests that future uranium prospecting work in this area should focus on late Paleoproterozoic U–rich granitic pegmatites.

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Section: Constraints From Zircon Ages Paleoproterozoic U Mineralizationmentioning

confidence: 99%

Section: Constraints From Zircon Ages Paleoproterozoic U Mineralizationmentioning

confidence: 99%

Paleoproterozoic U Mineralization in Huayangchuan Deposit, Xiaoqinling Area: Evidence from the U–Rich Granitic Pegmatite

Li,

et al. 2023

Minerals

View full text Add to dashboard Cite

show abstract

“…Second, the crust and mantle materials on the margin of the ancient continental region have strong material interactions and frequent magmatic activities, which can create favourable geological conditions for the large-scale enrichment of ore-forming materials. Therefore, the marginal zone of the ancient continent often had favourable uranium polymetallic mineralisation conditions that controlled the temporal and spatial distribution of uranium polymetallic deposits [30,31]. Regionally, a large number of late Palaeoproterozoic (2.0-1.8 Ga) uranium polymetallic deposits are distributed along the collisional orogenic belt along the marginal zone of the ancient continental North China Craton.…”

Section: Constraints From Zircon Age Of Paleoproterozoic U Mineraliza...mentioning

confidence: 99%

“…Regionally, a large number of late Palaeoproterozoic (2.0-1.8 Ga) uranium polymetallic deposits are distributed along the collisional orogenic belt along the marginal zone of the ancient continental North China Craton. Typical deposits include the Lianshanguan uranium deposit in the Liaoning Province, the Pinglu uranium deposit in the Shanxi Province, and the Hongshiquan uranium deposit in the Gansu Province [30,31]. In conclusion, the chronological research results of U-rich granitic pegmatite in this study show that uranium mineralisation in the late Palaeoproterozoic (1829 ± 11 and 1826 ± 7.9 Ma) also occurred in the Xiaoqinling area of the southern margin of the North China Craton, which implies that the tectonic-magmatic-mineralization events were produced during the ultimate cratonisation process of the North China Craton in the late Palaeoproterozoic (2.0-1.8 Ga) [32][33][34].…”

Section: Constraints From Zircon Age Of Paleoproterozoic U Mineraliza...mentioning

confidence: 99%

Paleoproterozoic U Mineralization in Huayangchuan Deposit, Xiaoqinling Area: Evidence From the U-Rich Granitic Pegmatite

Li,

et al. 2023

Preprint

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The Huayangchuan uranium deposit, located in the west of the Xiaoqinling belt on the southern margin of the North China Craton, is a polymetallic deposit dominated by U, Nb, Pb, and rare earth elements. The Huayangchuan uranium deposit, discovered in the 1950s, has long been known as a carbonatite-type uranium deposit. Recently, new geological work has found uranium mineralisation in many granitic pegmatite veins in the Huayangchuan deposit and adjacent areas. Here, we report a systematic investigation of the petrography, whole-rock geochemistry, zircon U-Pb ages, and in situ Lu-Hf isotopic characteristics of newly discovered U-rich granitic pegmatite veins in the west of Huayangchuan deposit. The petrological results showed that the lithology of the samples is equivalent to that of granite. The U-Pb ages of zircon were 1826.3 ± 7.9 and 1829 ± 11 Ma. Microscopically, the symbiotic characteristics of zircon, betafite, and uraninite exist in the intergranular fissures of K-feldspar and quartz, reflecting metallogenic phenomena in the rock formation process. Almost all whole-rock samples were rich in SiO2 (64.37–70.69 wt.%), total alkalis (K2O+Na2O = 8.50–10.30 wt.%), and Al2O3 (12.20–14.41 wt.%), but poor in Ti2O (0.23–0.73 wt.%), MgO (0.38–0.90 wt.%), P2O5 (0.14–0.83 wt.%), MnO (0.04–0.57 wt.%). Additionally, they showed enrichment of LILEs (such as Rb, Ba, Th, U, and K), depletion of HFSEs (such as Ta, Nb, P, Ti, and Hf), no alkaline dark minerals, and the characteristics are typical of intraplate A1-type granite. The A1-type granite displayed low zircon εHf(t) values (-19.42– -15.02) with zircon two-stage Hf model aged 3.10–2.76 Ga, indicating that the U-rich granitic pegmatite was derived predominantly from partial melting of the ancient continental crust (such as the early Taihua group formed in Archean-Neoarchean). Combined with the above results and regional geological data, the U-rich granitic pegmatite discovered in the Huayangchuan deposit was related to granite magma activity that formed in a post-collisional regime after the Luliang movement in the late Palaeoproterozoic. This study suggests that future uranium prospecting work in this area should focus on late Palaeoproterozoic U-rich granitic pegmatites.

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3-D μXRF Imaging System for Curved Surface

Wang,

Xu,

et al. 2024

IEEE Trans. Instrum. Meas.

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Micro-XRF Analysis On The Relationship Between Pyrite And Uranium Mineralization In Sandstone-Hosted Uranium Deposits

Cited by 4 publications

References 31 publications

Paleoproterozoic U Mineralization in Huayangchuan Deposit, Xiaoqinling Area: Evidence from the U–Rich Granitic Pegmatite

Paleoproterozoic U Mineralization in Huayangchuan Deposit, Xiaoqinling Area: Evidence from the U–Rich Granitic Pegmatite

Paleoproterozoic U Mineralization in Huayangchuan Deposit, Xiaoqinling Area: Evidence From the U-Rich Granitic Pegmatite

3-D μXRF Imaging System for Curved Surface

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