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watkinsonite

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Journal Article
Published: 01 October 2010
The Canadian Mineralogist (2010) 48 (5): 1109–1118.
...Dan Topa; Emil Makovicky; Jiří Sejkora; Herbert Dittrich Abstract The crystal structure of sulfur-free watkinsonite, ideally Cu 2 PbBi 4 Se 8 , monoclinic, a 12.952(4), b 4.152(1), c 15.155(5) Å, β 108.93(1)°, space group P 2 1 / m , Z = 2, part of the selenide mineralization of the uranium...
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Journal Article
Published: 01 June 2005
The Canadian Mineralogist (2005) 43 (3): 899–908.
... of formation. Particular attention is given to the rare Bi selenides watkinsonite, nevskite, and cuproan bohdanowiczite. Whereas watkinsonite and nevskite only occur intergrown with clausthalite, bohdanowiczite is more widespread and also is associated with Cu selenides. Watkinsonite from this second confirmed...
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Journal Article
Published: 01 December 1987
The Canadian Mineralogist (1987) 25 (4): 625–638.
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Back-scattered electron image (a) and optical image (b) of the grain of wat...
Published: 01 October 2010
F ig . 1. Back-scattered electron image (a) and optical image (b) of the grain of watkinsonite studied from Zálesí, Czech Republic. Symbols: wat: watkinsonite, cls: clausthalite, urn: uraninite.
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Reflected-light photomicrographs of (a) the grain of grundmannite, from whi...
Published: 01 May 2016
Fig. 1 Reflected-light photomicrographs of (a) the grain of grundmannite, from which the structural and reflectance data were obtained (horizontal field (h.f.) ~250 μm); (b) grundmannite, watkinsonite, eldragonite, klockmannite, and clausthalite as fracture filling in intensely zoned krut’aite
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Back-scattered electron (BSE) and secondary electron (SE) images showing th...
Published: 01 June 2005
F ig . 1. Back-scattered electron (BSE) and secondary electron (SE) images showing the texture and assemblage of Bi minerals from Niederschlema–Alberoda. a. BSE image of watkinsonite (dark) intergrown with clausthalite (bright) in sample Sh9. b. BSE image of watkinsonite associated
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Back-scattered electron (BSE) and secondary electron (SE) images showing th...
Published: 01 June 2005
F ig . 1. Back-scattered electron (BSE) and secondary electron (SE) images showing the texture and assemblage of Bi minerals from Niederschlema–Alberoda. a. BSE image of watkinsonite (dark) intergrown with clausthalite (bright) in sample Sh9. b. BSE image of watkinsonite associated
Image
Back-scattered electron (BSE) and secondary electron (SE) images showing th...
Published: 01 June 2005
F ig . 1. Back-scattered electron (BSE) and secondary electron (SE) images showing the texture and assemblage of Bi minerals from Niederschlema–Alberoda. a. BSE image of watkinsonite (dark) intergrown with clausthalite (bright) in sample Sh9. b. BSE image of watkinsonite associated
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CHEMICAL COMPOSITION OF <span class="search-highlight">WATKINSONITE</span>
Published: 01 June 2005
TABLE 1. CHEMICAL COMPOSITION OF WATKINSONITE
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CHEMICAL COMPOSITION OF <span class="search-highlight">WATKINSONITE</span> FROM ZÁLESÍ
Published: 01 October 2010
TABLE 1. CHEMICAL COMPOSITION OF WATKINSONITE FROM ZÁLESÍ
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POSITIONAL AND ANISOTROPIC DISPLACEMENT PARAMETERS FOR <span class="search-highlight">WATKINSONITE</span> FROM ZA...
Published: 01 October 2010
TABLE 3. POSITIONAL AND ANISOTROPIC DISPLACEMENT PARAMETERS FOR WATKINSONITE FROM ZÁLESÍ
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CHARACTERISTICS OF COORDINATION POLYHEDRA OF CATIONS IN <span class="search-highlight">WATKINSONITE</span> FROM Z...
Published: 01 October 2010
TABLE 5. CHARACTERISTICS OF COORDINATION POLYHEDRA OF CATIONS IN WATKINSONITE FROM ZÁLESÍ
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SELECTED CATION–ANION DISTANCES (Å) IN <span class="search-highlight">WATKINSONITE</span> FROM ZÁLESÍ
Published: 01 October 2010
TABLE 4. SELECTED CATION–ANION DISTANCES (Å) IN WATKINSONITE FROM ZÁLESÍ
Journal Article
Published: 01 April 2011
The Canadian Mineralogist (2011) 49 (2): 639–650.
... site has a distorted tetrahedral coordination. The remaining Ag sites have low occupancies. Litochlebite is an Ag-dominant isotype of watkinsonite, Cu 2 PbBi 4 Se 8 , and structurally related to berryite, Cu 3 Ag 2 Pb 3 Bi 7 S 16 . Abstract La litochlebite, Ag 2 PbBi 4 Se 8 , est une nouvelle espèce...
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Atom labels in the structure of <span class="search-highlight">watkinsonite</span>. All sites are fully occupied....
Published: 01 October 2010
F ig . 3. Atom labels in the structure of watkinsonite. All sites are fully occupied.
Journal Article
Published: 01 April 2006
The Canadian Mineralogist (2006) 44 (2): 465–480.
...). The structure determined allowed us to derive model structures of orthorhombic berryite (a polytypic variant) and of watkinsonite, Cu 2 PbBi 4 (Se,S) 8 . Structures of Ca 2 Sb 2 S 5 and La 4 In 5 S 13 follow the same modular principles. Abstract Nous avons résolu la structure cristalline de la berryite, de...
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SINGLE-CRYSTAL X-RAY DIFFRACTION: EXPERIMENTAL AND REFINEMENT DETAILS CONCE...
Published: 01 October 2010
TABLE 2. SINGLE-CRYSTAL X-RAY DIFFRACTION: EXPERIMENTAL AND REFINEMENT DETAILS CONCERNING WATKINSONITE
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The plot of Cu and Ag contents for litochlebite and <span class="search-highlight">watkinsonite</span> (calculate...
Published: 01 April 2011
F ig . 3. The plot of Cu and Ag contents for litochlebite and watkinsonite (calculated on the basis of 15 apfu ).
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Reflectance curves in air for a random section of litochlebite, compared wi...
Published: 01 April 2011
F ig . 2. Reflectance curves in air for a random section of litochlebite, compared with those of watkinsonite ( Johan et al. 1987 ).
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Chemical composition of <span class="search-highlight">watkinsonite</span> from Zálesí (circles) and berryite f...
Published: 01 October 2010
F ig . 2. Chemical composition of watkinsonite from Zálesí (circles) and berryite from Grube Clara ( Topa et al. 2006 ) (rhombs) in the central portions of the (Cu + Ag) – Bi – Pb diagram.