干旱区生态环境知识资源中心(Arid): Experimental determination of the phase relations of Pt and Pd antimonides and bismuthinides in the Fe-Ni-Cu sulfide systems between 1100 and 700 degrees C

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DOI	10.2138/am-2020-7154
	Experimental determination of the phase relations of Pt and Pd antimonides and bismuthinides in the Fe-Ni-Cu sulfide systems between 1100 and 700 degrees C
	Helmy, Hassan M.1,2; Botcharnikov, Roman 3
通讯作者	Helmy, Hassan M.
来源期刊	AMERICAN MINERALOGIST
ISSN	0003-004X
EISSN	1945-3027
出版年	2020
卷号	105 期号:3 页码:344-352
英文摘要	The stability relations of Pt and Pd antimonides and bismuthinides in the Sb- and Bi-bearing Fe-Ni-Cu sulfide systems have been experimentally determined at temperatures between 1100 and 700 degrees C in evacuated silica tubes. Both PtSb and PdSb are stable as immiscible liquids at temperatures above 1100 and 1000 degrees C, respectively. The Fe-Ni-Cu-sulfide melt that coexists with the immiscible antimonide melt can dissolve up to 3.8 wt% Sb at 1100 degrees C, whereas monosulfide solid solution (mss) dissolves very low amounts of Sb over the entire 1100-700 degrees C temperature range. The liquidus of Pt-antimonides and Pd-antimonides are above 980 and 750 degrees C, respectively. Bismuth does not form immiscible melt at 1100 degrees C but may partially partition into a vapor phase at 1050 degrees C. The Pt- and Pd-bismuthinides crystallize directly from immiscible bismuthinide melt only after crystallization of the sulfide melt into intermediate solid solution (iss). Insizwaite (PtBi2) and froodite (PdBi2) are stable at 780 and 700 degrees C, respectively. At the last stage of evolution of Sb-bearing magmatic Fe-Ni-Cu sulfide melts, Sb will form immiscible antimonide melt that will extract Pt and Pd from the sulfide melt. During cooling, Pt and Pd-antimonides will crystallize directly from the immiscible antimonide melt, and Pt-phases will form at higher temperatures relative to Pd-phases. Bismuth will partition into vapor phase and concentrate into a low-temperature melt in hydrothermal and porphyry systems that scavenge precious metals. The Sb and Bi (like Te) will be highly incompatible at moderate degrees of mantle partial melting.
英文关键词	Platinum-group minerals antimonides bismuthinides experimental study sulfide system phase relations
类型	Article
语种	英语
国家	Egypt ; Germany
收录类别	SCI-E
WOS记录号	WOS:000518370300006
WOS关键词	PLATINUM-GROUP ELEMENTS ; GROUP MINERALS ; BUSHVELD COMPLEX ; MERENSKY REEF ; EASTERN DESERT ; PGE DEPOSIT ; FRACTIONATION ; SIDEROPHILE ; INCLUSIONS ; PALLADIUM
WOS类目	Geochemistry & Geophysics ; Mineralogy
WOS研究方向	Geochemistry & Geophysics ; Mineralogy
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314004
作者单位	1.Menia Univ, Dept Geol, Al Minya 61519, Egypt; 2.Univ Bonn, Steinmann Inst, D-53115 Bonn, Germany; 3.Gutenberg Univ Mainz, Inst Geowissensch, Mainz, Germany
推荐引用方式 GB/T 7714	Helmy, Hassan M.,Botcharnikov, Roman. Experimental determination of the phase relations of Pt and Pd antimonides and bismuthinides in the Fe-Ni-Cu sulfide systems between 1100 and 700 degrees C[J],2020,105(3):344-352.
APA	Helmy, Hassan M.,&Botcharnikov, Roman.(2020).Experimental determination of the phase relations of Pt and Pd antimonides and bismuthinides in the Fe-Ni-Cu sulfide systems between 1100 and 700 degrees C.AMERICAN MINERALOGIST,105(3),344-352.
MLA	Helmy, Hassan M.,et al."Experimental determination of the phase relations of Pt and Pd antimonides and bismuthinides in the Fe-Ni-Cu sulfide systems between 1100 and 700 degrees C".AMERICAN MINERALOGIST 105.3(2020):344-352.