Further studies of Bohdanowiczite (AgBiSe2) and some associated minerals

Banaś, Marian; Atkin, David; Bowles, John F. W.; Simpson, Paul

doi:10.3406/bulmi.1980.7380

Cited by 6 publications

(10 citation statements)

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“…X-ray diffractograms of the obtained I–V–VI nanocrystals (Figure a) correspond well to the expected bulk structures (Figure S10). − The low lattice symmetry of CuBiSe 2 and CuSbSe 2 compounds , and line broadening of Bragg reflections result in only broad features on X-ray diffraction patterns. The X-ray diffractograms of AgBiSe 2 and Cu 3 SbSe 4 nanocrystals match well to the theoretical patterns of rhombohedral AgBiSe 2 and tetrahedral Cu 3 SbSe 4 bulk compounds. , …”

Section: Resultsmentioning

confidence: 99%

“… − The low lattice symmetry of CuBiSe 2 and CuSbSe 2 compounds , and line broadening of Bragg reflections result in only broad features on X-ray diffraction patterns. The X-ray diffractograms of AgBiSe 2 and Cu 3 SbSe 4 nanocrystals match well to the theoretical patterns of rhombohedral AgBiSe 2 and tetrahedral Cu 3 SbSe 4 bulk compounds. , …”

Section: Resultsmentioning

confidence: 99%

“…The X-ray diffractograms of AgBiSe 2 and Cu 3 SbSe 4 nanocrystals match well to the theoretical patterns of rhombohedral AgBiSe 2 and tetrahedral Cu 3 SbSe 4 bulk compounds. 34,35 Optical Properties of I−V−VI Nanocrystals. One property of I−V−VI materials is their high absorption coefficients.…”

Section: ■ Introductionmentioning

confidence: 99%

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Composition- and Size-Controlled I–V–VI Semiconductor Nanocrystals

Yarema

Moser

et al. 2020

Chem. Mater.

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Non-isovalent ternary and quaternary semiconductors (i.e., having two or more cations with different valence) have unique structural and electronic properties that are leveraged in photovoltaic, thermoelectric, and phase-change memory devices. Making these complex semiconductors in the form of colloidal nanocrystals imparts size-dependent properties and solution processability. Here, we present results on I-V-VI group colloidal nanocrystals. We focus on achieving sub-10 nm sizes for a wide range of I-V-VI selenide nanocrystals, including AgSbSe2, AgSb2Se3, CuSbSe2, Cu3SbSe4, AgBiSe2, and CuBiSe2. To highlight one possible application for these I-V-VI colloidal nanomaterials, we analyze the optical absorption and show that through composition and size control, this class of materials offers bandgaps in the mid-to near-IR. Absorption coefficients of AgSbSe2, CuSbSe2, and Cu3SbSe4 nanocrystals are on par with or higher than the well-studied PbS nanocrystals highlighting their potential for devices such as solar cells, (mid-)infrared photodetectors, and near-infrared bio-imaging systems. ASSOCIATED CONTENTSupporting data to the article (Figures S1-S15), containing quantifications of EDX spectra, extraction of lattice constants, TEM images, size distributions and additional XRD patterns for Ag-Sb-Se nanocrystals; crystal structure of Cu3SbSe4; absorption spectra and Tauc analysis of various I-V-VI nanocrystals. This material is available free of charge via the Internet at http://pubs.acs.org.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Composition- and Size-Controlled I–V–VI Semiconductor Nanocrystals

Yarema

Moser

et al. 2020

Chem. Mater.

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“…Bohdanowiczite is a rare mineral known only from a handful of localities (Banaś et al, 1979; Thorpe et al, 1976;Pringle and Thorpe, 1980;Nesterov et al, 1985). Banaś et al (1980) described solid solution between bohdanowiczite, AgBiSe 2 and matildite, AgBiS 2 . Our data would suggest at least a small degree of solid solution towards AgBiTe 2 , volynskite.…”

Section: Mineralogy and Compositional Datamentioning

confidence: 99%

Paragenesis of Cu-Fe ores from Ocna de Fier-Dognecea (Romania), typifying fluid plume mineralization in a proximal skarn setting

Cook

Ciobanu

2001

Mineral. mag.

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Trace mineral assemblages in the bornite- and chalcopyrite-rich Cu-Fe zone of the Ocna de Fier-Dognecea skarn deposits, Banat, SW Romania provide additional constraints on the genesis of this classic zoned skarn system. Observed assemblages substantiate a model, in which the Cu-Fe zone forms the proximal fluid-plume root of the system. Observed trace mineral assemblages in the magnesian forsterite-bearing skarns crystallized at ~650°C in a volatile-rich environment, evidenced by widespread phlogopite, ludwigite, valleriite and apatite. The entire assemblage thus belongs to the initial stage of skarn formation. Prolonged cooling led to sequential exsolution of trace mineral phases from bornite and chalcopyrite during the retrograde stage, although still at temperatures in excess of 500°C. Bornite is typified by the abundance of exsolved phases along cleavage planes and along crystal margins, notably chalcopyrite and pyrrhotite, but also cobalt pentlandite, carrollite, wittichenite, galena, mawsonite, silver and electrum. Chalcopyrite hosts cobalt pentlandite, carrollite, wittichenite, galena and a sequence of Se- and Te-bearing minerals (kawazulite, bohdanowiczite, hessite, volynskite), along, although not restricted to, grain margins. The assemblage bornite-chalcopyrite-magnetite, with the trace phases, cobalt pentlandite, carrollite, wittichenite and various Se- and Te-bearing minerals represents a characteristic assemblage common to a disparate range of deposits formed at temperatures in excess of 500°C in the presence of volatiles and typified by relatively low fS2 fluids.

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“…However, the only possible Bi-Ag sulfide-selenide substitution (between matildite, AgBiS 2 , and bohdanowiczite, AgBiSe 2 ) has not been documented for the full S-Se substitution range. The possible complete matilditehttps://doi.org/10.1180/mgm.2023.4 Published online by Cambridge University Press 4 bohdanowiczite solid solution has been evoked before (Banas et al 1980;Sejkora and Skacha 2015), but data was missing to clearly document its existence. It is the purpose of this contribution to do so, by providing new analytical data and compiling all available literature data for these two minerals.…”

Section: Introductionmentioning

confidence: 99%

On the matildite–bohdanowiczite solid-solution series

Alexandre

Aisida

2023

MinMag

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A high-grade ore sample from the Cu-Zn-Au Photo Lake volcanogenic massive sulfide deposit (Flin Flon-Snow Lake greenstone belt, Manitoba, Canada) contains a Bi-Ag sulfo-selenide situated approximately in the middle of the S-Se substitution range (Se~0.86 apfu, S~1.05 apfu). These new data, combined with a literature compilation of all publicly available matildite and bohdanowiczite mineral chemistry data, reveal a nearly complete range of S-Se substitution between these two minerals, with only the section between BiAgSe 0.78 S 1.18 and BiAgSe 0.25 S 1.75 -about a quarter of the full S-Se range -not documented. These findings suggest that a complete solid solution series between matildite and bohdanowiczite may exist, as previously suspected and in a manner similar to the galena -clausthalite complete solid solution series.

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Further studies of Bohdanowiczite (AgBiSe2) and some associated minerals

Cited by 6 publications

References 0 publications

Composition- and Size-Controlled I–V–VI Semiconductor Nanocrystals

Composition- and Size-Controlled I–V–VI Semiconductor Nanocrystals

Paragenesis of Cu-Fe ores from Ocna de Fier-Dognecea (Romania), typifying fluid plume mineralization in a proximal skarn setting

On the matildite–bohdanowiczite solid-solution series

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