1-20 OF 238 RESULTS FOR

braggite

Results shown limited to content with bounding coordinates.
Save search
Follow your search
Access your saved searches in your account
Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article

Mineralogy of Pt-Pd sulfides: The Redefinition of Braggite and Vysotskite (with Comments on the Extent of Solid Solution in the PtS–PdS Binary)

Louis J. CABRI, Andrew M. McDONALD
Published: 10 March 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (1): 167–175.
DOI: https://doi.org/10.3749/2200058
...Louis J. CABRI; Andrew M. McDONALD Abstract A re-evaluation of data relating to the crystal structures, phase equilibria, and ideal chemical formulae of the key minerals belonging to the PtS–PdS binary, namely vysotskite, braggite, and cooperite, has led to redefinitions of the ideal chemical...
FIGURES
View PDF for article title, Mineralogy of Pt-Pd sulfides: The Redefinition of <span class="search-highlight">Braggite</span> and Vysotskite (with Comments on the Extent of Solid Solution in the PtS–PdS Binary)
Purchase
Add to Citation Manager for Mineralogy of Pt-Pd sulfides: The Redefinition of <span class="search-highlight">Braggite</span> and Vysotskite (with Comments on the Extent of Solid Solution in the PtS–PdS Binary)
Journal Article

Raman spectra of synthetic "braggite", (Pd,Pt,Ni)S

R. K. W. Merkle, R. Pikl, S. M. C. Verryn, D. de Waal
Published: 01 June 1999
Mineralogical Magazine (1999) 63 (3): 363–367.
...R. K. W. Merkle; R. Pikl; S. M. C. Verryn; D. de Waal Abstract Raman spectra of synthetic "braggite" (Pd, Pt, Ni)S) vary systematically with changes in Pt/Pd ratios, but this change is less pronounced than in "cooperite" ((Pt, Pd, Ni)S). Compared to "vysotskite" (ideally PdS), the incorporation...
View PDF for article title, Raman spectra of synthetic &quot;<span class="search-highlight">braggite</span>&quot;, (Pd,Pt,Ni)S
Purchase
Add to Citation Manager for Raman spectra of synthetic &quot;<span class="search-highlight">braggite</span>&quot;, (Pd,Pt,Ni)S
Journal Article

Compositional variation of cooperite, braggite, and vysotskite from the Bushveld Complex

Sabine M. C. Verryn, Roland K. W. Merkle
Published: 01 June 1994
Mineralogical Magazine (1994) 58 (2): 223–234.
Add to Citation Manager for Compositional variation of cooperite, <span class="search-highlight">braggite</span>, and vysotskite from the Bushveld Complex
Journal Article

Characteristic optical data for cooperite, braggite and vysotskite

Alan J. Criddle, Christopher J. Stanley
Published: 01 May 1985
The Canadian Mineralogist (1985) 23 (2): 149–162.
View PDF for article title, Characteristic optical data for cooperite, <span class="search-highlight">braggite</span> and vysotskite
Purchase
Add to Citation Manager for Characteristic optical data for cooperite, <span class="search-highlight">braggite</span> and vysotskite
Journal Article

On cooperite, braggite, and vysotskite

L. J. Cabri, J. H. G. Laflamme, J. M. Stewart, K. Turner, B. J. Skinner
Published: 01 October 1978
American Mineralogist (1978) 63 (9-10): 832–839.
...L. J. Cabri; J. H. G. Laflamme; J. M. Stewart; K. Turner; B. J. Skinner Abstract Detailed mineralogical analyses of cooperite, braggite, and vysotskite, together with phase equilibrium studies, reveal that, though there is no uncertainty regarding the identity of cooperite (PtS; P 4 2 /mmc), one...
View PDF for article title, On cooperite, <span class="search-highlight">braggite</span>, and vysotskite
Purchase
Add to Citation Manager for On cooperite, <span class="search-highlight">braggite</span>, and vysotskite
Journal Article

THE SYSTEM PtS–PdS–NiS BETWEEN 1200° AND 700°C

Sabine M.C. Verryn, Roland K.W. Merkle
Published: 01 April 2002
The Canadian Mineralogist (2002) 40 (2): 571–584.
DOI: https://doi.org/10.2113/gscanmin.40.2.571
...Sabine M.C. Verryn; Roland K.W. Merkle Abstract Results of experimental investigations in the dry system PtS–PdS–NiS between 1200° and 700°C are presented. The phases encountered in the experimental runs are synthetic cooperite [( Pt ,Pd,Ni)S], synthetic braggite [( Pt,Pd ,Ni)S], synthetic...
FIGURES | View All (9)
View PDF for article title, THE SYSTEM PtS–PdS–NiS BETWEEN 1200° AND 700°C
Purchase
Add to Citation Manager for THE SYSTEM PtS–PdS–NiS BETWEEN 1200° AND 700°C
Journal Article

Wangyanite, PdNi 8 S 8 , a new Pd end-member mineral of the pentlandite group from the J-M reef, Stillwater Complex, Montana, USA

Chen Chen, Haiyang Xian, Christopher Jenkins, Zhuosen Yao, Yiping Yang, Xiaoju Lin, Shan Li, Jiaxin Xi, Yuhuan Yuan, Jianxi Zhu, Hongping He
Published: 26 March 2025
American Mineralogist (2025)
DOI: https://doi.org/10.2138/am-2024-9640
... of the Stillwater Complex, Montana, USA. Wangyanite occurs as anhedral-subhedral granular crystals 200–400 µm in size, associated with isoferroplatinum, braggite, pentlandite, and chalcopyrite interstitial to plagioclase grains within anorthosite. Wangyanite exhibits a yellowish brown color with a black streak...
View PDF for article title, Wangyanite, PdNi 8 S 8 , a new Pd end-member mineral of the pentlandite group from the J-M reef, Stillwater Complex, Montana, USA
Purchase
Add to Citation Manager for Wangyanite, PdNi 8 S 8 , a new Pd end-member mineral of the pentlandite group from the J-M reef, Stillwater Complex, Montana, USA
Early Publication
Image
Compositional variations, expressed in atoms per formula unit (apfu), of the vysotskite–braggite series from the Kirakkajuppura deposit, Penikat complex, in the Pd–Pt–Ni diagram. A total of 60 EMP analyses (n = 60), made on variously textured large grains and inclusions of vysotskite–braggite in other PGM, are plotted. Compositions of vysotskite from late-stage alteration zones (“AZ”: most enriched in Ni) developed in some of the large vysotskite –braggite grains are shown by filled stars.

Compositional variations, expressed in atoms per formula unit ( apfu ), of ...

Published: 01 October 2005
F ig . 4. Compositional variations, expressed in atoms per formula unit ( apfu ), of the vysotskite–braggite series from the Kirakkajuppura deposit, Penikat complex, in the Pd–Pt–Ni diagram. A total of 60 EMP analyses ( n = 60), made on variously textured large grains and inclusions
Image
Compositions of zoned vysotskite – braggite from the Penikat complex in the Pd–Pt–Ni compositional space (atom %). Symbols: U: unaltered vysotskite – braggite, Z: zones of alteration (Figs. 11A–C, Table 8).

Compositions of zoned vysotskite – braggite from the Penikat complex in the...

Published: 01 April 2004
F ig . 13. Compositions of zoned vysotskite – braggite from the Penikat complex in the Pd–Pt–Ni compositional space (atom %). Symbols: U: unaltered vysotskite – braggite, Z: zones of alteration (Figs. 11A–C , Table 8 ).
Journal Article

ZONED SULFIDES AND SULFARSENIDES OF THE PLATINUM-GROUP ELEMENTS FROM THE PENIKAT LAYERED COMPLEX, FINLAND

Andrei Y. Barkov, Michael E. Fleet, Robert F. Martin, Tuomo T. Alapieti
Published: 01 April 2004
The Canadian Mineralogist (2004) 42 (2): 515–537.
DOI: https://doi.org/10.2113/gscanmin.42.2.515
...F ig . 13. Compositions of zoned vysotskite – braggite from the Penikat complex in the Pd–Pt–Ni compositional space (atom %). Symbols: U: unaltered vysotskite – braggite, Z: zones of alteration (Figs. 11A–C , Table 8 ). ...
FIGURES | View All (30)
View PDF for article title, ZONED SULFIDES AND SULFARSENIDES OF THE PLATINUM-GROUP ELEMENTS FROM THE PENIKAT LAYERED COMPLEX, FINLAND
Purchase
Add to Citation Manager for ZONED SULFIDES AND SULFARSENIDES OF THE PLATINUM-GROUP ELEMENTS FROM THE PENIKAT LAYERED COMPLEX, FINLAND
Image

COMPARISON OF DATA FOR COOPERITE, BRAGGITE, AND VYSOTSKITE

Published: 10 March 2023
TABLE 1. COMPARISON OF DATA FOR COOPERITE, BRAGGITE, AND VYSOTSKITE
Image
(a) Back-scattered electron (BSE) micrograph of anhedral braggite [Brg, (Pt,Pd,Ni)S] grains from sample MR10, the top reef-enriched horizon in ELF-395 that was analyzed by energy-dispersive spectrometry (EDS) hyperspectral imaging (6 kV, 920 × 920 pixels, 46 nm pixel size). The arrows show rims of compositionally distinct minerals on the braggite grains. (b) Chemical phase map showing the distribution of braggite, pentlandite [Pn, (Fe,Ni)9S8], pyrrhotite (Po, Fe7S8), chalcopyrite (Ccp; CuFeS2), sperrylite (Spr; PtAs2), platinum antimonide (Ptsb; geversite, PtSb2, or stumpflite, PtSb), quartz (Qtz), and chlorite (Chl). Similarly composed spectra were detected by consideration of the X-ray line families (Pd L, Pt M, Fe L, Ni L, Cu L, As L, Sb L, S K, O K, Mg K, Al K, Si K) observed in defined areas. (c) Detail of the rectangle in (b) showing at the braggite rim a triple layer of discontinuous pyrrhotite to relatively continuous platinum antimonide and outer sperrylite. Anhedral chalcopyrite is present in the triple layer. The thickness for the different layers ranges between 46 nm and ∼1.1 μm. (d–f) Net intensity maps of cations [platinum group elements (PGE) and transition elements] and anions (arsenic, antimony, sulfur) in the areas shown in (b, c). (g) BSE micrograph of euhedral PGE mineral grains from sample MR-11, part of the top reef enriched horizon in ELF-395, that were analyzed by EDS (6 kV, 256 × 200 pixels, 38 nm pixel size). (h) Chemical phase map showing the distribution of laurite (Lau; RuS2), sperrylite, irarsite [Ira; (Ir,Ru,Rh,Pt)AsS], pyrrhotite, pyroxene (Px) and rhodium sulfarsenide (Rh-As-S). The phases were detected by cluster analysis under consideration of Os M, Ir M, Pt M, Ru L, Fe L, S K, Al L, O K, Mg K, Si K. Black areas represent mixed phase compositions at grain boundaries. (i–l) Net intensity maps of cations (sulfur, arsenic, oxygen) and PGE.

(a) Back-scattered electron (BSE) micrograph of anhedral braggite [Brg, (Pt...

Published: 13 December 2021
Fig. 6. (a) Back-scattered electron (BSE) micrograph of anhedral braggite [Brg, (Pt,Pd,Ni)S] grains from sample MR10, the top reef-enriched horizon in ELF-395 that was analyzed by energy-dispersive spectrometry (EDS) hyperspectral imaging (6 kV, 920 × 920 pixels, 46 nm pixel size). The arrows
Journal Article

PLATINUM-GROUP MINERALS FROM THE MECHANIC SETTLEMENT PLUTON, SOUTHERN NEW BRUNSWICK, CANADA

Tassos A. Grammatikopoulos, Sandra M. Barr, Russel S. Hiebert, Cliff R. Stanley, Oleg Valeyev
Published: 01 August 2007
The Canadian Mineralogist (2007) 45 (4): 775–792.
DOI: https://doi.org/10.2113/gscanmin.45.4.775
..., and froodite. Additional minerals identified are braggite, vysotskite, sperrylite, stillwaterite, hollingworthite, plumbo-palladinite, Pt–Fe alloy, sopcheite, and paolovite. Sperrylite, Pt–Fe alloy, and braggite are the main carriers of Pt; Ir-, Os-, or Ru-based PGM were not encountered. Gold and Au–Ag alloy...
FIGURES | View All (11)
View PDF for article title, PLATINUM-GROUP MINERALS FROM THE MECHANIC SETTLEMENT PLUTON, SOUTHERN NEW BRUNSWICK, CANADA
Purchase
Add to Citation Manager for PLATINUM-GROUP MINERALS FROM THE MECHANIC SETTLEMENT PLUTON, SOUTHERN NEW BRUNSWICK, CANADA
Journal Article

MODIFICATION OF DETRITAL PLATINUM-GROUP MINERALS FROM THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA

Frank Melcher, Thomas Oberthür, Jerzy Lodziak
Published: 01 October 2005
The Canadian Mineralogist (2005) 43 (5): 1711–1734.
DOI: https://doi.org/10.2113/gscanmin.43.5.1711
... voir remplacer par des “oxydes” hétérogènes de Pt–Fe(Cu,Pd) qui peuvent contenir des concentrations importantes de SiO 2 et MgO. D’autres grains de l’alliage Pt–Fe sont recouverts d’un mince liseré de PtS. Cooperite et braggite, et à un degré moindre, sperrylite, sont recouverts d’une couche de...
FIGURES | View All (8)
View PDF for article title, MODIFICATION OF DETRITAL PLATINUM-GROUP MINERALS FROM THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA
Purchase
Add to Citation Manager for MODIFICATION OF DETRITAL PLATINUM-GROUP MINERALS FROM THE EASTERN BUSHVELD COMPLEX, SOUTH AFRICA
Journal Article

THE OCCURRENCE OF Pb–Cl–(OH) AND Pt–Sn–S COMPOUNDS IN THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA

Andrei Y. Barkov, Robert F. Martin, Risto J. Kaukonen, Tuomo T. Alapieti
Published: 01 October 2001
The Canadian Mineralogist (2001) 39 (5): 1397–1403.
DOI: https://doi.org/10.2113/gscanmin.39.5.1397
..., in a sulfide-poor (≤5 vol.% of base-metal sulfides) enstatite orthocumulate of the Merensky Reef, Bushveld layered complex, South Africa. This seems to be the first reported occurrence of a Pb–Cl–(OH) compound in mafic-ultramafic rocks. The associated platinum-group minerals are members of the braggite series...
FIGURES
View PDF for article title, THE OCCURRENCE OF Pb–Cl–(OH) AND Pt–Sn–S COMPOUNDS IN THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA
Purchase
Add to Citation Manager for THE OCCURRENCE OF Pb–Cl–(OH) AND Pt–Sn–S COMPOUNDS IN THE MERENSKY REEF, BUSHVELD LAYERED COMPLEX, SOUTH AFRICA
Image
Backscattered SEM image of iron oxide ore, showing presence of braggite (Pt, Pd, Ni)S as disseminated particles in silicates, magnetites, occasionally in slip/fracture planes.

Backscattered SEM image of iron oxide ore, showing presence of braggite (Pt...

Published: 01 September 2019
Fig.4. Backscattered SEM image of iron oxide ore, showing presence of braggite (Pt, Pd, Ni)S as disseminated particles in silicates, magnetites, occasionally in slip/fracture planes.
Image
PGM mineralogy in the Richmond samples. (a and b) Large laurite grain with a needle of moncheite (RMO 5). (c) The only four detected PGM (cooperite–braggite) within the entire RMO 35 core. (d) Large relict cooperite–braggite (co–br) grain between Fe-hydroxide (fe-hy) and pyroxene (px) (RMO 42). (e) Relict laurite with fissures (RMO 42). (f) Native Pt grain with several internal fissures (RMO 42).

PGM mineralogy in the Richmond samples. (a and b) Large laurite grain with ...

Published: 13 December 2021
Fig. 10. PGM mineralogy in the Richmond samples. (a and b) Large laurite grain with a needle of moncheite (RMO 5). (c) The only four detected PGM (cooperite–braggite) within the entire RMO 35 core. (d) Large relict cooperite–braggite (co–br) grain between Fe-hydroxide (fe-hy) and pyroxene (px
Image
(a) Reflected light image (oil immersion) of braggite and moncheite grains (labelled in image) in the MSZ ore of the Great Dyke. (b) Backscatter electron micrograph of euhedral laurite grain intergrown with base-metal sulfides (chalcopyrite and pyrrhotite) from the MSZ. A grain of moncheite (labelled) also occurs. (c) Ternary (PtS–PdS–NiS mol.%) diagram illustrating the range of compositions of cooperite and braggite from pristine and altered (oxidized) MSZ base-metal sulfide ores. Panels (a) and (b) are reproduced from Figures 5a and 5e of Oberthür et al. (2003) and (c) is a reproduction of Figure 7 of that paper. All panels are reproduced with the permission of the author and of Mineralium Deposita.

(a) Reflected light image (oil immersion) of braggite and moncheite grains ...

Published: 01 January 2016
Figure 7 (a) Reflected light image (oil immersion) of braggite and moncheite grains (labelled in image) in the MSZ ore of the Great Dyke. (b) Backscatter electron micrograph of euhedral laurite grain intergrown with base-metal sulfides (chalcopyrite and pyrrhotite) from the MSZ. A grain
Image
Compositions (in at.%) of cooperite and braggite, projected in the triangular diagram PtS–PdS–NiS.

Compositions (in at.%) of cooperite and braggite, projected in the triangul...

Published: 01 April 2013
Fig. 9 Compositions (in at.%) of cooperite and braggite, projected in the triangular diagram PtS–PdS–NiS.
Image
Composition of braggite (filled circles) and vysotskite (open circles) from the MSP (in at.%).

Composition of braggite (filled circles) and vysotskite (open circles) from...

Published: 01 August 2007
F ig . 10. Composition of braggite (filled circles) and vysotskite (open circles) from the MSP (in at.%).