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High form of pentlandite and its thermal stability
The high-temperature form of pentlandite (Fe4.5Ni4.5S8) was found to be stable between 584 6 3 and 865 6 3 8C, breaking down into monosulfide solid solution and liquid at the later temperature. TheExpand
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Isothermal phase relations in the system Cu-Fe-S under hydrothermal conditions at 350 degrees C and 300 degrees C
The phase relations in the central portion of the Cu-Fe-S system were studied under hydrothermal conditions by the thermal gradient transport method. Isothermal sections at 350 degrees C and 300Expand
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Bulk compositions of intimate intergrowths of chalcopyrite and sphalerite and their genetic implications
To determine the bulk chemical compositions of chalcopyrite containing starlike sphalerite and sphalerite including dotlike chalcopyrite, specimens from various types of ore deposits in Japan wereExpand
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Ag2S solubility in sulfide solutions up to 250°C
In order to estimate possible silver sulfide complexes in ore solutions, the solubility of Ag2S was measured between 25° and 250°C in NaOH-H2S-H2O solutions of 0.0 to 4.1 m NaHS concentration.Expand
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Triclinic liddicoatite and elbaite in growth sectors of tourmaline from Madagascar
Abstract Crystals of liddicoatite-elbaite tourmaline from a pegmatite in Jochy, Madagascar are composed of o{021̄1}, r{101̄1}, c{0001}, a{112̄̄0}, and m{101̄0} sectors, which correspond to theExpand
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Solubility of sphalerite in aqueous sulfide solutions at temperatures between 25 and 240°c
Abstract In order to assess the role of zinc sulfide complexes in ore-forming solutions, the solubility of sphalerite was measured in NaOHH 2 S aqueous solutions of 0.0 to 3.0 m NaHS concentrationExpand
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A REVISION OF PHASE RELATIONS IN THE SYSTEM Fe–Ni–S FROM 650° TO 450°C
An elongate field of high-form pentlandite solid-solution, Fe 5.65 Ni 3.35 S 7.85 , β 2 (Ni 4± x S 3 ), occurs in the system Fe–Ni–S at 650°C. This solid solution coexists with monosulfideExpand
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THE PHASE RELATIONS BETWEEN Fe4.5Ni4.5S8 AND Co9S8 IN THE SYSTEM Fe–Ni–Co–S AT TEMPERATURES FROM 400° TO 1100°C
Nous avons etudie les relations de phases du sous-systeme Fe 4 . 5 Ni 4 . 5 S 8 -Co 9 S 8 dans le systeme Fe-Ni-Co-S en utilisant les syntheses avec tubes de silice evacues et scelles. Nous avonsExpand
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Viscosity measurements of hydrous rhyolitic melts using the fiber elongation method
We have devised a new, simple and easy technique to measure the viscosity of hydrous silicate melts by combining an autoclave for melt hydration and the fiber elongation method for viscosityExpand
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