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A re-examination of herzenbergite–teallite solid solution at temperatures between 300 and 700°C

Published online by Cambridge University Press:  05 July 2018

K. Hayashi ,
A. Kitakaze  and
A. Sugaki
K. Hayashi*
Affiliation:
Department of Mineralogy, Petrology and Economic Geology, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
A. Kitakaze
Affiliation:
Department of Mineralogy, Petrology and Economic Geology, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan Center for Northeast Asian Studies, Tohoku University, Aoba-ku, Sendai 980-8576, Japan
A. Sugaki
Affiliation:
4-30-503 Kadan, Aoba-ku, Sendai 980-0815, Japan
*
*E-mail: khayashi@mail.cc.tohoku.ac.jp
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Abstract

In order to investigate the range of the solid solution series in herzenbergite-teallite minerals, samples of different composition were synthesized. Herzenbergite-teallite minerals were synthesized by an evacuated silica glass tube method at 700°C. A linear relationship between cell dimensions, a, b and c and composition is established. Extension of solid solution to the Pb-rich portion of the system PbS-SnS is limited; the solid solution area is between Pb1.060Sn0.940S2 and SnS at 700°C. Teallite coexisting with galena was also synthesized by hydrothermal recrystallization at 300, 400 and 450°C. The compositions of teallite are Pb1.140Sn0.860S2 at 300°C, Pb1.114Sn0.886S2 at 400°C, and Pb1.124Sn0.876S2 at 450°C, respectively. Their compositions shift towards the PbS end-member from stoichiometric teallite. The cell dimensions of teallite, which was synthesized hydrothermally, follow the linear relationship between cell dimensions and composition established at 700°C.

Keywords

herzenbergiteteallitesolid solution
Type
Research Article
Information
Mineralogical Magazine , Volume 65 , Issue 5 , October 2001 , pp. 645 - 651
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2001

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