The 34S/32S homogeneity of Chemical Vapor Transport (CVT) Reaction-synthesized pyrites
文献类型：期刊论文
| 作者 | Liu, Li1,2; Fu, Bin3; Ding, Xing1,2; Gu, Jing4 |
| 刊名 | AMERICAN MINERALOGIST
 |
| 出版日期 | 2024-06-25 |
| 卷号 | 109期号:6页码:1024-1035 |
| 关键词 | CVT reaction pyrite S-34/S-32 nickel matrix effects SIMS |
| ISSN号 | 0003-004X |
| DOI | 10.2138/am-2023-9029 |
| 英文摘要 | The Chemical Vapor Transport (CVT) Reaction is an important and efficient method of synthesizing pyrite crystals. CVT-grown pyrites have been comprehensively investigated for physical properties and elemental chemical compositions. However, the isotopic compositions have not been investigated. In this study, four series of pyrite crystals (PY3, PY4, PY5, and PY6) were synthesized using the CVT method, with PY5 undoped and the others doped with nickel. The synthesized crystals were characterized qualitatively with confocal laser Raman microspectroscopy and quantitatively by EMPA, LA-ICP-MS, SIMS, and IRMS. The synthetic products are irregular polycrystalline aggregates or cubic and octahedral monocrystals, with characteristic Raman bands at similar to 344 cm(-1), similar to 380 cm(-1)/377 cm(-1), similar to 427 cm(-1)/430 cm(-1), and S/Fe weight and atomic ratios of 1.15-1.17 and 2.01-2.04, respectively, indicative of pyrite. The pyrites contain traces of inevitable impurities such as Si and Br. The nickel contents of Ni-doped pyrites are heterogeneous, 39-27 300 ppm for PY3, 24-21 700 ppm for PY4, and 57-2610 ppm for PY6. By comparison, the delta S-34 values obtained by SIMS are relatively homogeneous (PY3 = 17.3 +/- 0.9 parts per thousand, PY4 = 17.7 +/- 0.8 parts per thousand, PY5 = 17.9 +/- 0.8 parts per thousand, PY6 = 17.7 +/- 0.6 parts per thousand, +/- 2SD), and are consistent with IRMS delta S-34 values (17.8 +/- 0.2 parts per thousand for PY3, 18.3 +/- 0.9 parts per thousand for PY4, 18.2 +/- 0.3 parts per thousand for PY5, 18.1 +/- 0.1 parts per thousand for PY6, +/- 2SD). The homogeneity of S-34/S-32 suggests that CVT has the potential to synthesize reference materials for the determination of sulfur isotopic composition of pyrite using in situ techniques. Additionally, we also investigated the matrix effects of nickel in pyrite on the measurement of S-34/S-32 by SIMS, and a preliminary equation of Delta S-34 (parts per thousand) = -0.59 x Ni (wt%)(0.27) (R-2 = 0.3), where Delta S-34 is the discrepancy between in situ and bulk delta S-34 values, was derived for calibration. |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| WOS记录号 | WOS:001236391800010 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78471]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Liu, Li |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 2601, Australia 4.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Li,Fu, Bin,Ding, Xing,et al. The 34S/32S homogeneity of Chemical Vapor Transport (CVT) Reaction-synthesized pyrites[J]. AMERICAN MINERALOGIST,2024,109(6):1024-1035. |
| APA | Liu, Li,Fu, Bin,Ding, Xing,&Gu, Jing.(2024).The 34S/32S homogeneity of Chemical Vapor Transport (CVT) Reaction-synthesized pyrites.AMERICAN MINERALOGIST,109(6),1024-1035. |
| MLA | Liu, Li,et al."The 34S/32S homogeneity of Chemical Vapor Transport (CVT) Reaction-synthesized pyrites".AMERICAN MINERALOGIST 109.6(2024):1024-1035. |
入库方式： OAI收割
来源：广州地球化学研究所
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