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wendwilsonite

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Journal Article
Published: 01 July 2006
European Journal of Mineralogy (2006) 18 (4): 471–482.
...Uwe KOLITSCH; Michel FLECK Abstract As part of a comprehensive crystal-chemical study and classification of minerals and synthetic compounds with kröhnkite-type or -like chains of octahedra bridged by tetrahedra, the crystal structures of wendwilsonite from Schneeberg, Saxony, Germany...
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First thumbnail for: Third update on compounds with kröhnkite-type cha...
Second thumbnail for: Third update on compounds with kröhnkite-type cha...
Third thumbnail for: Third update on compounds with kröhnkite-type cha...
Journal Article
Published: 01 February 1987
American Mineralogist (1987) 72 (1-2): 217–221.
...Pete J. Dunn; B. Darko Sturman; Joseph A. Nelen Abstract Wendwilsonite, ideally Ca 2 Mg(AsO 4 ) 2 ⋅ 2H 2 O, is monoclinic, P2 1 /c , with a = 5.806(1), b = 12.912(2), c = 5.623(1) Å, β = 107°24(1)', V = 402.2(1) Å 3 , and Z = 2. It is red to pink, with a perfect {010} cleavage, D meas = 3.52, D...
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Published: 01 July 2006
Table 5. Anisotropic displacement parameters (in Å 2 ) for wendwilsonite.
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Published: 01 July 2006
Table 11. Results of empirical bond-valence calculations (v.u.) for wendwilsonite.
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The crystal structure of wendwilsonite from Schneeberg, Ca2(Mg0.90,Co0.10) (AsO4)2·2H2O. (a) View along [010], perpendicular to the chains; (b) view along [001], parallel to the chains. Ca atoms are shown as large dark spheres. Hydrogen bonds are shown in both views.
Published: 01 July 2006
Fig. 2. The crystal structure of wendwilsonite from Schneeberg, Ca 2 (Mg 0.90 ,Co 0.10 ) (AsO 4 ) 2 ·2H 2 O. (a) View along [010], perpendicular to the chains; (b) view along [001], parallel to the chains. Ca atoms are shown as large dark spheres. Hydrogen bonds are shown in both views.
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Published: 01 July 2006
Table 2. Fractional atomic coordinates and displacement parameters (in Å 2 ) for wendwilsonite.
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Published: 01 July 2006
Table 8. Selected bond distances (Å) and bond angles (°) for the coordination polyhedra in wendwilsonite.
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IMA-approved mineral species in the system Ca-Mg-As. Note that wendwilsonite and roselite contain significant amounts of Co compared to talmessite.
Published: 01 January 2014
Figure 6 IMA-approved mineral species in the system Ca-Mg-As. Note that wendwilsonite and roselite contain significant amounts of Co compared to talmessite.
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Examples of mineral samples used in this study. (a) Pharmacolite and picropharmacolite deposited on a massive skutterudite vein in reddish granitic host rock; width of photograph (WOP) is about 8 cm. (b) Picropharmacolite and little erythrite on calcite; WOP about 10 cm. (c) Pharmacolite aggregate on a barren granite fracture. WOP about 5 cm. (d) Picropharmacolite on pharmacolite on barren granite, WOP about 10 cm. (e) Picropharmacolite on wendwilsonite on pink erythrite; WOP is about 6 mm. (f) Colorless ferrarisite with white pharmacolite on erythrite; WOP is about 6 mm. (g) Colorless pharmacolite on white crust of hörnesite, overgrowing pink erythrite; WOP is about 1 cm. (h) Rosette of white wendwilsonite with needles of pharmacolite on pale pinkish erythrite-hörnesite solid solution. WOP is about 6 mm.
Published: 01 January 2014
) Pharmacolite aggregate on a barren granite fracture. WOP about 5 cm. ( d ) Picropharmacolite on pharmacolite on barren granite, WOP about 10 cm. ( e ) Picropharmacolite on wendwilsonite on pink erythrite; WOP is about 6 mm. ( f ) Colorless ferrarisite with white pharmacolite on erythrite; WOP is about 6 mm
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A view parallel to polyhedral layers and along kröhnkite-type chains for (a) collinsite, (b) wendwilsonite, (c) messelite, (d) dondoellite, and (e) K2Mn(SO4)2·2H2O. The legend is the same as in Figure 4.
Published: 21 October 2022
Fig. 6. A view parallel to polyhedral layers and along kröhnkite-type chains for (a) collinsite, (b) wendwilsonite, (c) messelite, (d) dondoellite, and (e) K 2 Mn(SO 4 ) 2 ·2H 2 O. The legend is the same as in Figure 4 .
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A view parallel to polyhedral layers with horizontally oriented kröhnkite-type chains for (a) collinsite, (b) wendwilsonite, (c) messelite, (d) dondoellite, and (e) K2Mn(SO4)2·2H2O. The legend is the same as in Figure 4.
Published: 21 October 2022
Fig. 5. A view parallel to polyhedral layers with horizontally oriented kröhnkite-type chains for (a) collinsite, (b) wendwilsonite, (c) messelite, (d) dondoellite, and (e) K 2 Mn(SO 4 ) 2 ·2H 2 O. The legend is the same as in Figure 4 .
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Raman spectra of rruffite, along with those (between 150 and 1100 cm−1) of roselite, zincroselite, brandtite, and wendwilsonite from the RRUFF project (see the text for details) for comparison. The spectra of the inset figure are shown with a vertical offset for more clarity.
Published: 01 June 2011
F ig . 3. Raman spectra of rruffite, along with those (between 150 and 1100 cm −1 ) of roselite, zincroselite, brandtite, and wendwilsonite from the RRUFF project (see the text for details) for comparison. The spectra of the inset figure are shown with a vertical offset for more clarity.
Journal Article
Published: 01 June 2014
Mineralogical Magazine (2014) 78 (3): 747–755.
..., lavendulan, magnesiokoritnigite, marcasite, quartz, pyrite, scorodite, wendwilsonite and other potentially new As-bearing minerals. Torrecillasite occurs as thin colourless prisms up to 0.4 mm long in jack-straw aggregates, as very thin fibres in puff balls and as massive intergrowths of needles. Prisms...
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First thumbnail for: Torrecillasite, Na ( As , Sb ) 4 3 + , a new miner...
Second thumbnail for: Torrecillasite, Na ( As , Sb ) 4 3 + , a new miner...
Journal Article
Published: 01 August 2012
European Journal of Mineralogy (2012) 24 (4): 717–726.
..., arseniosiderite, wendwilsonite and cabalzarite, and results from the weathering of a Variscan hydrothermal Co-Ni-As-(Cu-U-Mo) vein. Maghrebite forms lozenge-shaped prismatic crystals up to 0.2 mm in length. It is colorless, translucent with vitreous luster. D meas is 2.60 (1) g/cm 3 , D calc (crystal structure...
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First thumbnail for: Description and crystal structure of maghrebite, M...
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Journal Article
Published: 21 October 2022
The Canadian Mineralogist (2022) 60 (5): 837–847.
...Fig. 6. A view parallel to polyhedral layers and along kröhnkite-type chains for (a) collinsite, (b) wendwilsonite, (c) messelite, (d) dondoellite, and (e) K 2 Mn(SO 4 ) 2 ·2H 2 O. The legend is the same as in Figure 4 . ...
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First thumbnail for: Dondoellite, Ca 2 Fe(PO 4 ) 2 ·2H 2 O, a New Miner...
Second thumbnail for: Dondoellite, Ca 2 Fe(PO 4 ) 2 ·2H 2 O, a New Miner...
Third thumbnail for: Dondoellite, Ca 2 Fe(PO 4 ) 2 ·2H 2 O, a New Miner...
Journal Article
Published: 01 June 2011
The Canadian Mineralogist (2011) 49 (3): 877–884.
...F ig . 3. Raman spectra of rruffite, along with those (between 150 and 1100 cm −1 ) of roselite, zincroselite, brandtite, and wendwilsonite from the RRUFF project (see the text for details) for comparison. The spectra of the inset figure are shown with a vertical offset for more clarity. ...
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First thumbnail for: RRUFFITE, Ca 2 Cu(AsO 4 ) 2 ·2H 2 O, A NEW MEMBER ...
Second thumbnail for: RRUFFITE, Ca 2 Cu(AsO 4 ) 2 ·2H 2 O, A NEW MEMBER ...
Third thumbnail for: RRUFFITE, Ca 2 Cu(AsO 4 ) 2 ·2H 2 O, A NEW MEMBER ...
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A view of a polyhedral layer formed by vertically oriented kröhnkite-type chains linked together by Ca2+ or K+ cations (spheres) in (a) collinsite (Herwig & Hawthorne 2006), (b) wendwilsonite (Kolitsch & Fleck 2006), (c) messelite (Fleck & Kolitsch 2003), (d) dondoellite (this study), and (e) K2Mn(SO4)2·2H2O (Fleck et al. 2002b). Tetrahedra represent PO4, AsO4, or SO4, and octahedra MgO6, FeO6, or MnO6. Two different colored spheres and tetrahedra in dondoellite and synthetic K2Mn(SO4)2·2H2O represent two symmetrically distinct Ca/K and PO4/SO4.
Published: 21 October 2022
Fig. 4. A view of a polyhedral layer formed by vertically oriented kröhnkite-type chains linked together by Ca 2+ or K + cations (spheres) in (a) collinsite ( Herwig & Hawthorne 2006 ), (b) wendwilsonite ( Kolitsch & Fleck 2006 ), (c) messelite ( Fleck & Kolitsch 2003 ), (d
Journal Article
Published: 01 January 2014
American Mineralogist (2014) 99 (1): 44–56.
...Figure 6 IMA-approved mineral species in the system Ca-Mg-As. Note that wendwilsonite and roselite contain significant amounts of Co compared to talmessite. ...
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First thumbnail for: Weathering of cobalt arsenides: Natural assemblage...
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Published: 08 May 2019
Talmessite Ca 2 Mg(AsO 4 ) 2 ·2H 2 O Wendwilsonite Ca 2 Mg(AsO 4 ) 2 ·2H 2 O
Journal Article
Published: 01 October 2024
Mineralogical Magazine (2024) 88 (5): 627–631.
...) The kröhnkite supergroup is established. It is divided into the brandtite group, including the species brandtite, dobšináite, kröhnkite, roselite, rruffite, wendwilsonite and zincroselite, the collinsite group, including the species anorthoroselite, cassidyite, collinsite, gaitite, hillite, nickeltalmessite...