Abstract
Abstract Experimental studies on the two solid solutions franckeite s.s. and cylindrite s.s. yielded among others the Pb‐free endmembers of franckeite and cylindrite respectively. In these endmembers the lead content of the two mineral phases are completely substituted by bivalent tin. A third phase, ottemannite s.s. with (Fe, Sb)‐bearing compositions, was further identified in the Pb‐free 4‐component system Fe‐Sn‐Sb‐S. Pb‐free franckeite and cylindrite could only be synthesized as homogeneous phases at high temperatures. The ottemannite s.s. was obtained at 600°C but an extensive existing range was also confirmed at temperatures below 500°C.The phase relations were discussed in the pseudoternary subsystem SnS‐SnS2‐FeSb2S4. The following sequence of Pb‐ free phases and phase assemblages were observed under increasing Sn4+ content at 600°C : herzenbergite (SnS)+franckeite, franckeite, franckeite+cylindrite, cylindrite, cylindrite+(Fe, Sb)‐ottemannite, (Fe, Sb)‐ottemannite, (Fe, Sb)‐ ottemannite+berndtite (SnS2). The assemblage cylindrite+berndtite was identified in synthetic systems involving Pb. The phase Fe, Sb‐ottemannite s.s. appears to be stable only under Pb‐de‐ficient and high sulfur fugacity conditions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
