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diarsenides

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Journal Article
Published: 01 August 2004
The Canadian Mineralogist (2004) 42 (4): 1221–1240.
...Isabel Fanlo; Ignacio Subías; Fernando Gervilla; Andrés Paniagua; Belén García Abstract The San Juan de Plan deposit, in the central Pyrenees of Spain, is situated in an ankeritic horizon in Silurian black shales. The main association consists of pyrite, sulfarsenides, diarsenides, and Co...
FIGURES | View All (11)
Journal Article
Published: 01 April 1963
American Mineralogist (1963) 48 (3-4_Part_1): 271–299.
...Eugene H. Roseboom Abstract Analyses of natural Co-Ni-Fe diarsenides have indicated two distinct compositional groups: the rammelsbergites (and pararammelsbergites), which are nickel-rich, and the loellingite-safHorite series, which are nickel-poor. The synthetic diarsenides show extensive solid...
Journal Article
Journal: Economic Geology
Published: 01 April 1917
Economic Geology (1917) 12 (3): 207–218.
Journal Article
Published: 01 September 1940
American Mineralogist (1940) 25 (9): 561–577.
Journal Article
Journal: GSA Bulletin
Published: 01 April 1947
GSA Bulletin (1947) 58 (4): 299–392.
... analyses indicate the existence of an isometric diarsenide series is not substantiated by a critical review of the analyses. Extensive arsenic deficiency shown by published analyses of isometric arsenides is due largely to mechanical inhomogeneity involving “orthorhombic” diarsenides, niccolite, and other...
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Compositional representations (mol.%) of skutterudites and <span class="search-highlight">diarsenides</span>. Bot...
Published: 01 June 2002
F ig . 6. Compositional representations (mol.%) of skutterudites and diarsenides. Both diagrams show a summary of data from all samples analysed. ( a ) Skutterudites in the system FeAs 3 -CoAs 3 -NiAs 3 . The shaded area indicates the maximum field of solid-solution at 800°C ( Roseboom, 1962
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A) Plot of compositions of <span class="search-highlight">diarsenides</span> from Ni ore in the system CoAs 2 –Ni...
Published: 01 April 2012
Fig. 5 A) Plot of compositions of diarsenides from Ni ore in the system CoAs 2 –NiAs 2 –FeAs 2 . The compositional fields of diarsenides analyzed by others authors in material from various mines of the Bou Azzer district are also shown for comparison. B) Binary plot of Ni versus S in weight
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a. SEM–BSE image of a polished section of a zoned <span class="search-highlight">diarsenide</span>–sulfarsenide a...
Published: 01 October 2007
F ig . 6. a. SEM–BSE image of a polished section of a zoned diarsenide–sulfarsenide aggregate. b. Microprobe data made along line A in 6a show a clear correlation of As with Ni and of S and Co in the minerals rammelsbergite (Ram), cobaltite (Cbt) and Safflorite (Saf). c. SEM–BSE image
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Compilations of data from literature on <span class="search-highlight">diarsenides</span> and triarsenides. On th...
Published: 01 February 2004
F ig . 18. Compilations of data from literature on diarsenides and triarsenides. On the left: diarsenide compositions; on the right, triarsenide compositions. Compositions from natural occurrences are marked in red, the compositions synthesized in this study, in yellow, and their area of overlap
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Plot of <span class="search-highlight">diarsenide</span> compositions in the system CoAs 2 –NiAs 2 –FeAs 2 . Blac...
Published: 01 August 2004
F ig . 4. Plot of diarsenide compositions in the system CoAs 2 –NiAs 2 –FeAs 2 . Black squares: safflorite; black diamonds: rammelsbergite. The compositional limits of natural (Ni, Fe, Co) diarsenides according to Roseboom (1963) (dashed area) and Radcliffe & Berry (1968) (full area
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Photomicrographs (A-C) and backscattered electron image (D) of the Co-Ni ar...
Published: 01 March 2009
Ni-Co diarsenides replacing rammelsbergite (Ramm.); the latter is also selectively replacing nickeline, plane-polarized reflected light. The white dotted line delineates the boundary between S-rich diarsenides and rammelsbergite. (C). Well-defined euhedral gersdorffite crystals (Gr) intergrown
Journal Article
Published: 01 June 2002
Mineralogical Magazine (2002) 66 (3): 385–407.
...F ig . 6. Compositional representations (mol.%) of skutterudites and diarsenides. Both diagrams show a summary of data from all samples analysed. ( a ) Skutterudites in the system FeAs 3 -CoAs 3 -NiAs 3 . The shaded area indicates the maximum field of solid-solution at 800°C ( Roseboom, 1962...
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<span class="search-highlight">Diarsenides</span> formed at 650°C in equilibrium with sulfarsenides or skutterudi...
Published: 01 February 2004
F ig . 10. Diarsenides formed at 650°C in equilibrium with sulfarsenides or skutterudite and pyrrhotite. The solid-solution field shown corresponds to the As-poor side of the diarsenide solid-solution volume. The solid-solution fields are divided into subareas according to phase assemblage
Journal Article
Published: 01 December 1968
American Mineralogist (1968) 53 (11-12): 1856–1881.
...Dennis Radcliffe; L. G. Berry Abstract Electron microprobe analyses of transition metal diarsenide minerals show that there is complete solid solution between CoAs 2 -FeAs 2 , limited solution of Co in NiAsi and no solid solution between FeAs 2 -NiAs 2 . The only ternary Co-Fe-Ni diarsenide...
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A) Plot of the compositions of <span class="search-highlight">diarsenides</span> from the Co–Fe ore in the system...
Published: 01 April 2012
Fig. 8 A) Plot of the compositions of diarsenides from the Co–Fe ore in the system CoAs 2 –NiAs 2 –FeAs 2 . The compositional fields of diarsenides analyzed by other authors in various mines of the Bou Azzer district are also shown for comparison, with shading as in Figure 5A . B) Binary plot
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Contents of Fe, Co, and Ni of sulfarsenides coexisting with <span class="search-highlight">diarsenides</span> ( F...
Published: 01 February 2004
F ig . 14. Contents of Fe, Co, and Ni of sulfarsenides coexisting with diarsenides ( Fig. 15 ) as well as skutterudite and pyrrhotite at 500°C. The solid-solution fields correspond to the As-rich side of the respective solid-solution volumes. The As content and phase assemblages are listed
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Photomicrographs of the Co-Ni arsenide ore minerals. (A). Idiomorphic cryst...
Published: 01 March 2009
serpentinite matrix, plane-polarized reflected light. (E). Disseminated irregular masses and resorbed grains of nickeline replaced by Co-Ni diarsenides within serpentinite matrix, plane-polarized reflected light. (F). Massive nickeline replaced by rammelsbergite with replacement texture, rammelsbergite
Journal Article
Published: 23 June 2015
The Canadian Mineralogist (2015) 53 (1): 105–132.
... altered troctolites. Several late stage arsenic-rich phases occur in altered troctolitic rocks and underlying metasedimentary footwall hosts (Virginia Formation). They appear as nickeline, maucherite, and diarsenides in the system rammelsbergite-safflorite-loellingite, and sulfarsenides of the cobaltite...
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Journal Article
Journal: Economic Geology
Published: 01 March 2009
Economic Geology (2009) 104 (2): 249–266.
... Ni-Co diarsenides replacing rammelsbergite (Ramm.); the latter is also selectively replacing nickeline, plane-polarized reflected light. The white dotted line delineates the boundary between S-rich diarsenides and rammelsbergite. (C). Well-defined euhedral gersdorffite crystals (Gr) intergrown...
FIGURES | View All (14)
Journal Article
Published: 01 February 2004
The Canadian Mineralogist (2004) 42 (1): 63–86.
...F ig . 18. Compilations of data from literature on diarsenides and triarsenides. On the left: diarsenide compositions; on the right, triarsenide compositions. Compositions from natural occurrences are marked in red, the compositions synthesized in this study, in yellow, and their area of overlap...
FIGURES | View All (18)