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The Cu-Bi-S system: results from low-temperature experiments

Published online by Cambridge University Press:  05 July 2018

Naiding Wang
Naiding Wang*
Affiliation:
Institute of Mineralogy and Petrography, University of Heidelberg, Germany
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Abstract

Low-temperature experiments in the ‘dry’ ternary Cu-Bi-S system, conducted by using sulphidation methods down to 120°C produced a new metastable solid solution series Cu10Bi2S13-Cu5Bi2S8 at 178°C coexisting with CuS. This transformed slowly at 190–200°C to an assemblage of either CuS-(Cu,Bi)8S9 or CuS-Bi2S3 or both, depending on available sulphur. Sulphidation experiments on Cu3BiS3 similarly revealed a solid solution range for the phase (Cu,Bi)8S9 of up to Cu/Bi = 3/2 at 178–190°C, and a lower stability limit of 138°C Isothermal sections of the system were constructed at 200 and 300°C, based on the new information collected but excluding the metastable series.

Keywords

Cu-Bi-S systemwittichenitecuprobismutiteemplectitehodrushitelow-temperature experiments
Type
Experimental Mineralogy
Information
Mineralogical Magazine , Volume 58 , Issue 391 , June 1994 , pp. 201 - 204
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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