Geology and sulfur isotope geochemistry of Dafulou tin-polymetallic deposit in Dachang orefield, Guangxi, China

Abstract

No. 22 ore of Dafulou deposit was systematically analyzed for sulfur isotopes. The results show that the δ³⁴S values of sulfide minerals, ranging from −0.154 to +0.218% and with an average value of +0.114 1%, are mostly positive and characterized by rich sulfur (S) content. This suggests that the sulfur of the Dafulou ore deposit is derived from magma and relates to the Longxianggai concealed granite, which points to the important role of magma during mineralization and implyies the product of the active continental margin. By comparison between the Dafulou and the Kengma tin deposit, significant differences exist in the sulfur isotope composition. In the Kengma deposit, the sulfur isotope composition is characterized by the high negative value, which is different from the Dafulou tin-polymetallic deposit. The difference of the enrichment and fractionation of the sulfur isotope is the synthesized result of the metallogenic conditions. It also has the difference in the metallogenic environment and metallogenic characteristics of the deposit in the same ore belt.

Keywords

tin-polymetallic deposit / sulfur isotope / ore-forming material sources / Dafulou deposit

References

[1] HanF, HutchinsonR W. Evidence for hydrothermal exhalative sedimentary origin of the Dachang tin-polymetallic deposits — Geochemistry of rare earth elements and trace elements of the host rocks [J]. Mineral Deposits, 1989, 8: 33-42

[2] CaiM-h, MaoJ-w, LiangT, FrancoP, HuangH-lan. The origin of the Tongkeng-Changpo tin deposit, Dachang metal district, Guangxi, China: Clues from fluid inclusions and He isotope systematics [J]. Mineralium Deposita, 2007, 42: 613-626

[3] HanF, HutchinsonR W. Evidence for exhalative origin for rocks and ores of the Dachang tin polymetallic field: the ore-bearing formation and hydrothermal exhalative sedimentary rocks [J]. Mineral Deposits, 1989, 8: 25-40

[4] CaiM-h, LiangT, WuD-c, HuangH-min. Structure characteristics and mineralization controls of the Nandan-hechi metallogenic belt in Guangxi province [J]. Geology and Prospecting, 2004, 40(6): 5-10

[5] HanF, HutchinsonR W. Synthetic studies on the origin of the Dachang tin-polymetallic deposits and their metallogenetic model [J]. Bull Chinese Academy Geological Sciences, 1991, 22: 61-80

[6] JiangS-y, HanF, ShenJ-z, PalmerM R. Chemical and Rb-Sr, Sm-Nd isotopic systematics of tourmaline from the Dachang Sn-polymetallic ore deposits, Guangxi Province, P. R. China [J]. Chemical Geology, 1999, 157: 49-67

[7] FanD, ZhangT, YeJ, PašavaJ, KribekB, DobesP, VarrinI, ZakK. Geochemistry and origin of tin-polymetallic sulfide deposits hosted by the Devonian black shale series near Dachang, Guangxi, China [J]. Ore Geology Reviews, 2004, 24: 103-120

[8] WangD-h, ChenY-c, ChenW, SangH-q, LuY-f, ChenK-l, LinZ-mao. Dating of the Dachang superlarge tin-polymetallic deposit in Guangxi and its implication for the genesis of the No. 100 orebody [J]. Acta Geologica Sinica: English Edition, 2004, 78(2): 452-458

[9] CaiM-h, HeL-q, LiuG-q, WuD-c, HuangH-min. SHRIMP zircon U-Pb dating of the intrusive rocks in the Dachang tin polymetallic ore field, Guangxi and their geological significance [J]. Geology Review, 2006, 52(3): 409-414

[10] FuM, KwakT, MernaghT P. Fluid inclusion studies of zoning in the Dachang tin-polymetallic ore field, People’s Republic of China [J]. Economic Geology, 1993, 88: 283-300

[11] YeX-s, YanY-x, HeH-zhou. The mineralization factors and tectonic evolution of Dachang super large tin deposit Guangxi, China [J]. Geochimica, 1999, 28(3): 213-221

[12] TanelliG, LattanziP. The cassiterite-polymetallic sulfide deposits of Dachang, Guangxi, People’s Republic of China [J]. Mineralium Deposita, 1985, 20: 102-106

[13] WangD-h, ChenY-c, ChenW, SangH-q, LiH-q, LuY-f, ChenK-l, LinZ-mao. Dating the Dachang giant tin-polymetallic deposit in Nandan, Guangxi [J]. Acta Geological Sinica, 2004, 78(1): 132-138

[14] CaiM-h, MaoJ-w, LiangT, HuangH-lan. Fluid inclusion studies of Tongkeng-Changpo deposit in Dachang polymetallic tin orefield [J]. Mineral Deposits, 2005, 24(3): 228-241

[15] ChenY-c, HuangM-z, XuJ, AiY-d, LiX-m, TangS-h, MengL-ku. Geological features and metallogenetic series of the Dachang cassiteritesulfide-polymetallic belt [J]. Acta Geologica Sinica, 1985, 3: 228-240

[16] HanF, HutchinsonR W. Evidence for exhalative origin of the Dachang tin-polymetallic sulfide deposits, their geological and geochemical characteristics [J]. Mineral Deposits, 1990, 9: 309-323

[17] ZhaoK-d, JiangS-y, XiaoH-q, NiPei. Origin of ore-forming fluids of the Dachang Sn-polymetallic ore deposit: Evidence from helium isotopes [J]. Chinese Science Bulletin, 2002, 47(12): 1041-1045

[18] OhmotoH. Systematic of sulfur and carbon isotopes in hydrothermal ore deposits [J]. Economic Geology, 1972, 67: 551-578

[19] ZhaoK D, JiangS Y, NiP, LingH F, JiangY H. Sulfur, lead and helium isotopic compositions of sulfide minerals from the Dachang Sn-polymetallic ore district in South China: Implication for ore genesis [J]. Mineralogy and Petrology, 2007, 89: 251-273

[20] FuM, ChangkakotiA, KrouseH R, GrayJ, KwakT. An oxygen, hydrogen, sulfur, and carbon isotope study of carbonate-replacement (skarn) tin deposits of the Dachang tin field, China [J]. Economic Geology, 1991, 86: 1683-1703

[21] GaoJ-yuan. Pb isotopic evolution and its significance in ore genesis in the Dachang tin-polymetallic ore deposits [J]. Geologygeochemistry, 1999, 27(2): 38-43

[22] LiangT, WangD-h, CaiM-h, ChenZ-y, GuoC-l, HuangH-min. Sulfur and lead isotope composition tracing for the sources of ore-forming material in Dachang tin-polymetallic orefield, Guangxi [J]. Acta Geological Sinica, 2008, 82(7): 967-977

[23] FanS-k, LiX-d, ChengY-s, ChenC-z, HuangW-hong. Geochemical features of vein rocks and their significance to structure and mineralization in the Dachang ore district, Guangxi province [J]. Geology and Exploration, 2010, 46(5): 828-835

[24] LattanziP, CorazzaM, CorsiniF, TanelliG. Sulfide mineralogy in the polymetallic cassiterite deposits of Dachang, P.R. China [J]. Mineralium Deposita, 1989, 24: 141-147

[25] LiH-q, WangD-h, MeiY-p, LiangT, ChenZ-y, GuoC-l, YingL-juan. Lithogenesis and mineralization chronology study on the lamo zinc-copper polymetallic ore deposit in Dachang orefield, Guangxi [J]. Acta Geological Sinica, 2008, 82: 912-920

[26] HeH-z, YeX-sun. Study on source of ore-forming materials in Dachang ore field, Guangxi [J]. Guangxi Geology, 1996, 9(4): 33-41

[27] DingT-ping. Isotope geochemical study of some super-large ore deposits in China [J]. Acta Geoscientia Sinica, 1997, 18(4): 373-381

[28] WeiJ-y, WangG-yuIsotope geochemistry [M], 1988BeijingGeological Publishing House19-36

[29] YeX-s, YanY-x, HeH-zhouThe metallogenic condition of Dachang super large tin deposit in Guangxi [M], 1996BeijingMetallurgical Industry Press138-139