| Phase Relations in the System Pb—Sn—Fe—Sb—S |
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| 引用本文： | 吴大清.Phase Relations in the System Pb—Sn—Fe—Sb—S[J].中国地球化学学报,1990,9(2):155-160. |
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| 作者姓名： | 吴大清 |
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| 作者单位： | InstituteofGeochemistry,AcademiaSinica |
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| 摘 要： | Phase relations in the system Pb-Sn-Fe-Sb-S were investigated through the diagrams of projecting plane 8x(PbS-SnS-SnS2)from the vertrex point Fe0.96Sb2.04S4.12by vacuum silica tube technique.Experimental results have shown that franckeite has a wide solid solution with substitution of Pb^2 by Sn^2 ,In franckeite s.s.the content of Sn^2 varies from 0 to 4.8 atoms (total metal atoms are 11 atoms per formula) at 500℃ and 0-4.0 atoms at 400℃,respectively,Meanwhile,the content of Sn^4 ranges from 1.3to 2.0 atoms at 500℃ and 1.5-2.1 atoms at 400℃ in franckeite s.s.These results are consistent well with analytic data on natural franckeite.The cylindrite solid solutiopn has a relatively small range with Sn^2 -1.8atoms and Sm^4 =3.2-4.2 atoms per formula at 500℃ and ,Sn^2 =0.5-1.7 atoms and Sm^4 =3.3-4.2 atoms at 400℃ which are comparable with natural cylindrite.The phases coexisting in equilibrium with franckeite s.s. are galena,boulangerite,robinsonite.teallite,SnS,cylindrite.s.s.and synthetic phase Ⅲ ss or I ss.The cylindrite s.s.coexists with SnS2 and the above mentioned phases,but not with galena.teallite and SnS,and probably not with boulangerite in this projecting plane.
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| 关 键 词： | 铅 锡 铁 硫 锑 辉铅铋矿 辉锑锡铅矿 方铅矿 赋存形式 |
Phase relations in the system Pb-Sn-Fe-Sb-S |
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| Wu Daqing.Phase relations in the system Pb-Sn-Fe-Sb-S[J].Chinese Journal of Geochemistry,1990,9(2):155-160. |
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| Authors: | Wu Daqing |
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| Institution: | (1) Institute of Geochemistry, Academia Sinica, China |
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| Abstract: | Phase relations in the system Pb-Sn-Fe-Sb-S were investigated through the diagrams of projecting plane 8x (PbS-SnS-SnS2) from the vertrex point Fe0.96Sb2.04S4.12 by vacuum silica tube technique. Experimental results have shown that franckeite has a wide solid solution with substitution
of Pb2+ by Sn2+. In franckeite s.s. the content of Sn2+ varies from 0 to 4.8 atoms (total metal atoms are 11 atoms per formula) at 500 °C and 0 – 4.0 atoms at 400 °C, respectively.
Meanwhile, the content of Sn4+ ranges from 1.3 to 2.3 atoms at 500 °C and 1.5 – 2.1 atoms at 400 °C in franckeite s.s. These results are consistent well
with analytic data on natural franckeite.
The cylindrite solid solution has a relatively small range with Sn2+ =0.4 - 1.8 atoms and Sn4+ = 3.2–4.2 atoms per formula at 500 °C and Sn2+ =0.5 - 1.7 atoms and Sn4+ =3.3 - 4.2 atoms at 400 °C which are comparable with natural cylindrite.
The phases coexisting in equilibrium with franckeite s.s. are galena, boulangerite, robinsonite, teallite, SnS, cylindrite
s.s. and synthetic phase III ss or I ss. The cylindrite s.s. coexists with SnS2 and the above mentioned phases, but not with galena, teallite and SnS, and probably not with boulangerite in this projecting
plane. |
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