Studies of sulfosalts of copper; V, Phases and phase relations in the system Cu-Sb-As-S between 350 degrees and 500 degrees C

Luce, Frederick D.; Tuttle, C. L.; Skinner, Brian J.

doi:10.2113/gsecongeo.72.2.271

Cited by 31 publications

(11 citation statements)

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“…We showed recently for Cu 3 4 ] differ significantly in size whereas they have about the same size in Cu 3 SbS 4 . The higher symmetrical sphalerite structure type cannot be built if the differences between different tetrahedra are too large.…”

Section: Single Crystal Investigationsmentioning

confidence: 84%

“…Single crystal X-ray diffraction data of Cu 3 As 0.330 Sb 0.670 S 4 (Cu 3 As 0.3 Sb 0.7 S 4 ), Cu 3 As 0.736 Sb 0.264 S 4 (Cu 3 As 0.7 Sb 0.3 S 4 ), and Cu 3 AsS 4 were collected on a STOE IPDS. For all three compositions a numerical absorption correction was performed.…”

Section: Methodsmentioning

confidence: 99%

“…Skinner et al found that the antimony richest enargite type composition in their studies was Cu 3 As 0.874 Sb 0.126 S 4 (annealing temperature 500 C). The same authors designated Cu 3 As 0.691 Sb 0.309 S 4 , grown at 425 C, as the arsenic richest famatinite type composition they received in their studies [3]. Sugaki et al determined the composition gap at temperatures of 400 C, 500 C, and 600 C [4].…”

Section: Phase Analytical Investigationsmentioning

confidence: 99%

“…The thermal effects in the two heating cycles are identical within the tolerances. An X-ray powder diffraction diagram was recorded for Cu 3 As 0.5 Sb 0.5 S 4 after melting. The diffraction data show the coexistence of the famatinite type and a second phase belonging to the Cu 12 As 4 S 13 --Cu 12 Sb 4 S 13 series.…”

Section: Phase Analytical Investigationsmentioning

confidence: 99%

“…The system Cu 3 AsS 4 --Cu 3 SbS 4 is well investigated with respect to the formation of mixed crystals and thermal properties [3,4]. According to powder data the structure of the mixed crystals Cu 3 As x Sb 1Àx S 4 changes at x ¼ 0.8.…”

Section: Introductionmentioning

confidence: 99%

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The system Cu₃AsS₄–Cu₃SbS₄and investigations on normal tetrahedral structures

Pfitzner¹,

Bernert²

2004

Zeitschrift Für Kristallographie - Crystalline Materials

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X-ray diffraction / Powder diffraction structure analysis / Single crystal structure analysis / Thiometallate / Tetrahedral structures / Wurtzite structure type / Sphalerite structure type Abstract. In order to develop a novel model to predict if a so called normal tetrahedral compound crystallizes in a wurtzite-or sphalerite superstructure type, the system Cu 3 AsS 4 --Cu 3 SbS 4 was reinvestigated. A solid solution series was prepared and the mixed crystals were characterized by powder X-ray techniques. [MS 4 ] were calculated for the investigated compounds. In addition, the corresponding data were calculated for further solids from literature data. The volumes of the tetrahedra are used to separate compounds with a sphalerite type anion arrangement from compounds with hexagonal packed anions. A closer inspection of the tetrahedra volumes reveals a greater variation for one given material in the case of wurtzite type superstructures than for sphalerite type superstructures. A critical difference in the tetrahedra volumes is derived from these data.

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Section: Single Crystal Investigationsmentioning

confidence: 84%

Section: Methodsmentioning

confidence: 99%