Experimental evidence of sulfide melt evolution via immiscibility and fractional crystallization

John Mavrogenes; Ronald Frost; Heather A. Sparks

doi:10.3749/canmin.51.6.841

Experimental evidence of sulfide melt evolution via immiscibility and fractional crystallization

John Mavrogenes^*, Ronald Frost, Heather A. Sparks

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Most ore deposits in high-grade metamorphic terranes show signs of remobilization of sulfide ores. During this process the compositions and tenor of the ore change dramatically. In this report we show the results of a study designed to clarify chemical modification of sulfide melts as they cool from high temperatures. Sulfide melts were allowed to "trickle down" through a permeable inert host over an extreme temperature gradient. The effects of crystal fractionation and liquid immiscibility can be clearly seen in the resultant experimental charges, explaining many features previously documented in metamorphosed ores.

Original language	English
Pages (from-to)	841-850
Number of pages	10
Journal	Canadian Mineralogist
Volume	51
Issue number	6
DOIs	https://doi.org/10.3749/canmin.51.6.841
Publication status	Published - 1 Dec 2013

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N2 - Most ore deposits in high-grade metamorphic terranes show signs of remobilization of sulfide ores. During this process the compositions and tenor of the ore change dramatically. In this report we show the results of a study designed to clarify chemical modification of sulfide melts as they cool from high temperatures. Sulfide melts were allowed to "trickle down" through a permeable inert host over an extreme temperature gradient. The effects of crystal fractionation and liquid immiscibility can be clearly seen in the resultant experimental charges, explaining many features previously documented in metamorphosed ores.

AB - Most ore deposits in high-grade metamorphic terranes show signs of remobilization of sulfide ores. During this process the compositions and tenor of the ore change dramatically. In this report we show the results of a study designed to clarify chemical modification of sulfide melts as they cool from high temperatures. Sulfide melts were allowed to "trickle down" through a permeable inert host over an extreme temperature gradient. The effects of crystal fractionation and liquid immiscibility can be clearly seen in the resultant experimental charges, explaining many features previously documented in metamorphosed ores.

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KW - Metal alloys

KW - Metamorphosed ores

KW - Ore remobilization

KW - Sulfide melt evolution

KW - Sulfosalts

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Experimental evidence of sulfide melt evolution via immiscibility and fractional crystallization

Abstract

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