Sulfur isotopic ratios of ore deposits associated with mesozoic felsic magmatism in South Korea, with special reference to gold-silver deposits.

Shimazaki, Hidehiko; Sakai, Hitoshi; Kaneda, Hiroaki; Lee, Min Sung

doi:10.2343/geochemj.19.163

Cited by 9 publications

(18 citation statements)

References 15 publications

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“…These compiled data are in good agreement with the previous data measured on composite samples by Sato et al (1981) and Shimazaki et al (1985), except for the Shinyemi Zn-Pb-Mo skarn deposits of the Taebaegsan area, which yielded +4.2 (compiled from Lee, M. S., 1985) and -1.4 (Sato et al, 1981) Jin (1995b). vol.…”

Section: Variation Of δ 34 S Values Of Ore Deposits In South Koreasupporting

confidence: 90%

“…Because the values are positive, being similar to those of the magnetite-series ore deposits in Japan, and because number of Cretaceous radiometric ages reported was increasing on ore deposits of the Jurassic granitic terranes in South Korea at that time, they interpreted that these Korean ore deposits were originated by ore fluids liberated from Cretaceous magnetite-series granitic activities. Shimazaki et al (1985) also found (1) the generally positive δ 34 S values of +2 ~ +7 permil, (2) no systematic variation in δ 34 S values among the ore deposits of different geologic environment and with different produced metals, and (3) exceptionally negative δ 34 S values in some ore deposits of the Taebaegsan area in South Korea. They suggested that the general positive δ 34 S trend was due to the biogenic-sulfur poor nature of sedimentary rocks in the Korean continental crust.…”

mentioning

confidence: 69%

“…50, no. 4, 2000 Yoon & Shimazaki (1993) 8 Geumwang Au-Ag, vein, Jurassic +9.6 1c Shimazaki et al (1985) ditto +6.9 6 Yoon & Shimazaki (1993) 9 Geumbong Au-Ag vein, Jurassic +6.6 3 ditto 10 Seogyo…”

Section: Variation Of δ 34 S Values Of Ore Deposits In South Koreamentioning

confidence: 99%

“…Au-Ag vein, Jurassic +5.8 1c Shimazaki et al (1985) Yoon & Shimazaki (1993) 18 Gubong Au-Ag vein, Jurassic +5.9 1c Shimazaki et al (1985) 19 CheongyangW-Mo vein, 80-86 Ma +4.7 1c Shimazaki et al (1985) 20 Namsan Au-Ag vein, 127 Ma +7.0 8 Kim & Choi (1996) Lee & Park (1996) 35 Jinrag Fluorite vein, Jurassic +15.4 1c Shimazaki et al (1985) 36 Jeonjuil Au-Ag vein, Cretaceous +4.9 1c ditto ditto +6.3 5 Yoon & Shimazaki (1993) 37 Dongjin Cu-Pb-Zn-Ag vein,Cretaceous +5.3 4 38 Deogon Au-Ag vein, Jurassic +5.4 1c Shimazaki et al (1985) 39 Daegeum Au-Ag vein, 112 Ma +2.7 13 Yoon & Shimazaki (1993) Yoon & Shimazaki (1993) 59 Bodeog Au-Ag vein, 156 Ma +2.0 11 So et al (1993) 60 Jangheung Pb-Zn-Cu vein, Cretaceous +5.9 1c Sato et al (1981) Cretaceous Gyeongsang Basin 61 Yeongdeog Au-Ag vein, Cretaceous +5.9 5 Lee et al (1995) 62 Cheongsong Cu-Pb-Zn vein, Cretaceous +5.8 6 Lee & Kim (1997) Choi et al (1992) 66 Jeonheung Cu-Pb-Zn vein, Cretaceous +6.1 4 Choi et al (1992) 67 Ogsan Cu-Pb-Zn vein, 78 Ma +7.1 2 ditto 68 Geumhag Cu vein, Cretaceous +6.3 11 Sato et al (1981) Abbreviations: diss., dissemination; brec. pipe, breccia pipe; n, number of analyses.…”

Section: Variation Of δ 34 S Values Of Ore Deposits In South Koreamentioning

confidence: 99%

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Source Diversity of Ore Sulfur from Mesozoic‐Cenozoic Mineral Deposits in the Korean Peninsula Region

Ishihara¹,

Jin

Sasaki³

2000

Resource Geology

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: Sulfides from the Daebo Jurassic granitoids and some ore deposits from Korean Peninsula and Sikhote Alin occurring in different basement settings were analyzed for δ34S values. Highly positive values were obtained from Jurassic Mo skarn deposit at Geumseong of the Ogcheon belt (average +13. 0%), Au‐quartz vein deposits at Unsan, North Korea (+6. 7%), and late Paleozoic Sn‐F deposit at Votnesenka (+8. 2%), Khanka massif, Russia. Together with published data of that region, regional variation of δ34S values is shown across Korean Peninsula. Sulfur isotopic data published are compiled on 88 ore deposits, whose mineralization epochs belong to Cretaceous (58 deposits), Jurassic (25 deposits) and Precambrian (4 deposits) in South Korea. Average sulfur isotopic values vary across South Korea as follows: Cretaceous deposits in the Gyeongsang basin, +4. 8% ranging +1.2 ˜ +12.7‰ (n=28); Jurassic and Cretaceous deposits in the Sobaegsan massif, +3. 5% ranging 0.0 ˜ +7.8‰ (n=20); those of the Ogcheon belt, +6. 4% ranging ‐0.5 ˜ +15.4‰(n=19); those of the Gyeonggi massif, +5. 5% ranging +2.1 ˜ +9.0‰(n = 21). The δ34S values of South Korea tend to be concentrated around +5. 5 permil, exhibiting little, if any, a systematic variation across the geotectonic belts. This tendency is seen also in North Korea and Northeast China within the Cino‐Korean Block, and may be called as Cino‐Korean type. Sulfur of this type is derived mostly from the crystalline basement. Khanka massif of Russia seems to have features of the Cino‐Korean type. In contrast, paired positive/negative belts corresponding to magnetite‐series/ilmenite‐series granitic belts are overwhelming in the Japanese Islands, especially in Southwest Japan. The similar trend is also seen in southern Sikhote Alin and northern Okhotsk Rim, which may be called as Japanese type. Source of the sulfur in this type is likely in the subducting oceanic slab for positive value and accreted sedimentary complex for the negative value, respectively. The Daebo granitoids have an average rock δ34S value of +5. 3 permil, which should have reflected that of the source rocks in the continental crust. The ore sulfur heavier than this value may have been originated in other granitoids having even higher δ34S values, or the ore fluids interacted directly with sulfate sulfur of the host evaporites or carbonate rocks. Rock isotopic values of granitoids and basement rocks need to be examined in future from the above point of view in mind.

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Section: Variation Of δ 34 S Values Of Ore Deposits In South Koreasupporting

confidence: 90%

mentioning

confidence: 69%

Section: Variation Of δ 34 S Values Of Ore Deposits In South Koreamentioning

confidence: 99%

Section: Variation Of δ 34 S Values Of Ore Deposits In South Koreamentioning

confidence: 99%

See 2 more Smart Citations

Source Diversity of Ore Sulfur from Mesozoic‐Cenozoic Mineral Deposits in the Korean Peninsula Region

Ishihara¹,

Jin

Sasaki³

2000

Resource Geology

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“…These major Hg and Sb deposits in southern China are stratabound, and hosted in Paleozoic limestone formations (e.g., Yan and Liu, 1989). Positive δ 34 S values of ore sulfur up to +15 ‰ are known from the Mesozoic hydrothermal deposits in Korean peninsula (Ishihara et al, 2000a;Imai and Anan, 2000;Sato et al, 1981;Shimazaki et al, 1985;Yoon and Shimazaki, 1993;Shelton et al, 1988). attributed such high δ 34 S values of ore sulfur in Korean peninsula to structurally substituted sulfate (SSS) in Cambrian to Ordovician carbonate rocks ranging from +26 to +45 ‰, indicating high δ 34 S values of seawater sulfate during Cambrian to Ordovician.…”

Section: Cause Of Regional Variation Of δ 34 S Values Of Hg and Sb Dementioning

confidence: 99%

Sulfur Isotope Study on Hg and Sb Deposits in Japan

2006

Self Cite

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. Sulfur isotope ratios of cinnabar from Hg deposits and stibnite, jamesonite and berthierite from Sb deposits in Japan are examined in order to understand metallogeneses of Hg and Sb deposits in Japanese island arcs. The studied Hg and Sb deposits include the Hg deposit at Yamato‐suigin (Honshu) and the Sb deposit at Ichinokawa (Shikoku) in the Southwest Japan arc. In addition, Hg deposits including Itomuka and Ryushoden in central Hokkaido and Hg and Sb mineralizations in Northeast Japan arc are examined. The δ34S values of cinnabar from the Hidaka‐Kitami district, central Hokkaido, including the Itomuka and Ryushoden deposits range widely, from ‐10 to +16 %o, the highest values encountered at the Samani deposit. The δ34S values of cinnabar from other areas in Japan range from ‐12 to +5 %o, having δ34S values higher than +2 %o from southwestern Hokkaido (Meiji deposit), Shikoku (Suii deposit) and Kyushu (Hasami and Yamagano deposits). On the other hand, the δ34S values of stibnite from all areas in Japan range from ‐14 to +5 %o, having positive δ34S values higher than +2 %o up to +5 %o from southwestern Hokkaido (Yakumo, Toyotomi and Teine deposits) and eastern‐central Honshu (Hachiman and Daikoku deposits). The variation in δ34S values of Hg and Sb deposits may reflect the variation in δ34S values of country rocks or variation in mixing ratio of sulfur extracted from the country rocks, sulfur derived from seawater sulfate, and sulfur derived from magmatic emanations. The relatively high δ34S values of cinnabar and stibnite higher than +2 %o from southwestern Hokkaido, eastern‐central Honshu and Kyushu are probably caused by contribution of volcanic emanation from arc magmas having positive σδ34S values, whereas the positive δ34S values of cinnabar higher than +2 %o from Suii deposit in Shikoku may be attributed to structurally substituted sulfate in limestone country rocks and/or sulfur derived from seawater sulfate. However, the wide range of the δ34S values of cinnabar from the Hidaka‐Kitami district, central Hokkaido, is difficult to explain at this moment. Other relatively low, negative δ34S values of cinnabar and stibnite, berthierite from other areas in Japan may be attributed to 1) incorporation of isotopically light sedimentary sulfur or sulfur derived from ilmenite‐series silicic magma, or 2) less contribution of volcanic emanation from arc magmas having positive σδ34S values.

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Mesothermal gold vein mineralization of the Samdong mine, Youngdong mining district, Republic of Korea

Yun

Shelton

1995

Mineral. Deposita

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Mesothermal gold mineralization at the Samdong mine (5.5-13.5 g/ton Au), Youngdong mining district, is situated in massive quartz veins up to 1.2 m wide which fill fault fractures within upper amphibolite to epidote-amphibolite facies, Precambrian-banded biotite gneiss. The veins are mineralogically simple, consisting of iron-and base-metal sulfides and electrum, and are associated with weak hydrothermal alteration zones ( <0.5 m wide) characterized by silicification and sericitization. Fluid inclusion data and equilibrium thermodynamic interpretation of mineral assemblages indicate that the quartz veins were formed at temperatures between 425 and 190~ from relatively dilute aqueous fluids (4.5-13.8 wt. % equiv NaC1) containing variable amounts of CO2 and CH4. Evidence of fluid unmixing (CO2 effervescence) during the early vein formation indicates approximate pressures of 1.3-1.9 kbars, corresponding to minimum depths of ~5-7 km under a purely lithostatic pressure regime. Gold deposition occurred mainly at temperatures between 345 and 240 ~ likely due to decreases in sulfur activity accompanying fluid unmixing. The ~534S values of sulfide minerals ( -3.0 to 5.3 %o), and the measured and calculated O-H isotope compositions of ore fluids (c5180 = 5.7 to 7.6%0; 6D = -74 to -80%0 ) indicate that mesothermal gold mineralization at the Samdong mine may have formed from dominantly magmatic hydrothermal fluids, possibly related to intrusion of the nearby ilmenite-series, 'Kimcheon Granite' of Late Jurassic age.

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Sulfur isotopic ratios of ore deposits associated with mesozoic felsic magmatism in South Korea, with special reference to gold-silver deposits.

Cited by 9 publications

References 15 publications

Source Diversity of Ore Sulfur from Mesozoic‐Cenozoic Mineral Deposits in the Korean Peninsula Region

Source Diversity of Ore Sulfur from Mesozoic‐Cenozoic Mineral Deposits in the Korean Peninsula Region

Sulfur Isotope Study on Hg and Sb Deposits in Japan

Mesothermal gold vein mineralization of the Samdong mine, Youngdong mining district, Republic of Korea

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