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krutovite

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Journal Article
Published: 01 February 2004
The Canadian Mineralogist (2004) 42 (1): 63–86.
... been investigated at 500° and 650°C, with a focus on phase relations within the arsenic-rich regions of the (Fe,Co,Ni)(As,S) 2 prism. The phase relations involve alloclasite, arsenopyrite, cobaltite or gersdorffite, in equilibrium with diarsenide solid-solution ( dss ), löllingite, krutovite...
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Journal Article
Published: 01 August 2004
The Canadian Mineralogist (2004) 42 (4): 1221–1240.
... corresponds to the formula NiAs 1.77 S 0.23 , and the maximum S content of rammelsbergite is 1.1 ∠0.1 wt% at 700°C. Nevertheless, a complete range of compositions between gersdorffite (NiAsS) and krutovite (cubic phase, NiAs 2 ) has been reported by Spiridonov & Chvileva (1995) . 3) There is a small...
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Journal Article
Published: 01 March 2020
American Mineralogist (2020) 105 (3): 422–427.
... , a = 5.4816(5) Å, V = 164.71(3) Å 3 , and Z = 4. D x = 4.881(1) g/cm 3 calculated on the basis of the empirical formula. Negevite is a first natural phosphide belonging to the pyrite structure type. It is a chemical and structural analog of vaesite, NiS 2 , krutovite, NiAs 2 , and penroseite, NiSe 2...
FIGURES
Journal Article
Published: 01 April 2012
The Canadian Mineralogist (2012) 50 (2): 447–470.
... ). These complex patterns of twinning suggest that at least part of the massive rammelsbergite forms by inversion of earlier krutovite (ideally NiAs 2 , which has a trimorphic relationship with rammelsbergite and pararammelsbergite). This conclusion notably contrast with En-Naciri’s (1995) observations...
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Journal Article
Published: 01 January 2015
American Mineralogist (2015) 100 (1): 334–339.
... Belorechenskoye. The oxidation processes are poorly developed mostly in the upper part of the deposit. In the oxidized parts of the dolomite veins with primary uraninite, nickeline, krutovite, rammelsbergite, gersdorffite, or native As, the secondary minerals include limonite, annabergite, pharmacolite...
Journal Article
Published: 01 September 2012
European Journal of Mineralogy (2012) 24 (5): 913–922.
... & V.V.L.). In the oxidized parts of the dolomite veins with Ni arsenides (nickeline, krutovite, rammelsbergite) and gersdorffite, or with native As, secondary minerals include goethite (limonite) and a number of arsenates: annabergite, pharmacolite, picropharmacolite, hörnesite, rösslerite, parasymplesite...
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Journal Article
Published: 21 December 2022
Mineralogical Magazine (2023) 87 (2): 194–203.
... is connected to strongly acidic solutions (Majzlan et al. , 2020 ). They are derived from oxidative weathering of nickelskutterudite or krutovite in the absence of carbonate gangue minerals which could serve as a pH buffer. Cobaltkoritnigite seems much scarcer than koritnigite, in agreement with the general...
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Journal Article
Published: 01 December 2022
American Mineralogist (2022) 107 (12): 2219–2225.
... zones and may be important carriers of As and PGE in such settings ( González-Jiménez et al. 2021 ). Some of the compositions show polymorphism, for example, NiAs 2 is known as the minerals rammelsbergite, pararammelsbergite, and krutovite. Structural variations are encountered even within one mineral...
FIGURES
Journal Article
Published: 01 October 2020
American Mineralogist (2020) 105 (10): 1598–1605.
... ), krutovite (NiAs 2 ), and penroseite (NiSe 2 ). The synthetic counterpart of negevite has well-explored catalytic and photocatalytic properties. Negevite is named for its type locality in the Negev Desert, Israel The holotype is deposited in the Mineralogical Museum of the St. Petersburg State University...
Series: GSA Special Papers
Published: 28 December 2018
DOI: 10.1130/2018.2540(04)
EISBN: 9780813795409
...) maucherite, Ni 11 As 8 ; (3) nickeline, NiAs; and (4–6) NiAs 2 trimorphs krutovite, rammelsbergite, and pararammelsbergite ( Anthony et al., 1990 ; Bindi et al., 2014 ). We have identified the two low-As members of this group, orcélite and maucherite, at Cemetery Ridge (Tables 2 , 3 , DR4, DR5). Most...
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