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roselite

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Journal Article
Published: 01 February 1987
American Mineralogist (1987) 72 (1-2): 217–221.
..., Ogdensburg, New Jersey; Bou-Azzer, Morocco; and Coahuila, Mexico. Wendwilsonite is the Mg analogue of roselite [Ca 2 (CO,Mg)(AsO 4 ) 2 ⋅2H 2 O]. New chemical analyses show that roselite exists with as much as 89 mol% of the Co endmember, and there is solid solution to type wendwilsonite with 82 mol...
Journal Article
Published: 01 June 2011
The Canadian Mineralogist (2011) 49 (3): 877–884.
... = b , X ∧ c 49°, and it does not fluoresce under long- or short-wave ultraviolet light. The dispersion is weak, with r < v . An electron-microprobe analysis yielded the empirical formula Ca 2.01 Cu 1.01 (AsO 4 ) 2.02 ·1.9H 2 O. Rruffite, isostructural with roselite, is monoclinic, with space group...
FIGURES
Journal Article
Published: 01 February 1977
The Canadian Mineralogist (1977) 15 (1): 36–42.
Journal Article
Published: 01 October 1955
American Mineralogist (1955) 40 (9-10): 828–833.
... and fine-granular aggregates. Optically biaxial positive, with n X = 1.653, n Y = 1.659, n Z = 1.676, 2V = 25°, specific gravity 3.16 for material with Ca:Fe:Mn:Mg = 12.3:8.6:1.6:l; also n X = 1.644, n Y = 1.649, n Z = 1.663, 2V small, for material with Ca:Fe:Mn:Mg = 26.8:8.4:5.4:1. Beta-roselite, Ca 2 Co...
Journal Article
Published: 01 September 1936
American Mineralogist (1936) 21 (9): 589–603.
...M. A. Peacock Abstract Revision of the geometrical and optical crystallography of roselite—(Ca, Co, Mg) 3 As 2 O 8 ·2H 2 O from Schneeberg, Saxony, leads to results that differ in many important respects from the classical data of Schrauf (1874). Roselite proves to be monoclinic, prismatic; a:b:c...
Image
IMA-approved mineral species in the system Ca-Mg-As. Note that wendwilsonit...
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.
Journal Article
Published: 01 October 2007
American Mineralogist (2007) 92 (10): 1630–1639.
..., chalcopyrite, native gold, erythrite, talmessite/roselite-beta, Cr-bearing yukonite, alumopharmacosiderite, powellite, and a blue-green earthy copper arsenate related to geminite. The mineral results from the weathering of a Variscan hydrothermal As-Co-Ni-Ag-Au vein. The Bou Azzer mine and the similarly named...
FIGURES | View All (6)
Image
Raman spectra of rruffite, along with those (between 150 and 1100 cm −1 ) o...
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: 11 April 2023
Mineralogical Magazine (2023) 87 (2): 225–232.
... guidelines, 25 mineral names are now modified: domeykite-β becomes trigodomeykite; fergusonite-(Y)-β becomes clinofergusonite-(Y); fergusonite-(Ce)-β becomes clinofergusonite-(Ce); fergusonite-(Nd)-β becomes clinofergusonite-(Nd); ice-VII becomes cubo-ice; roselite-β becomes anorthoroselite; sulphur-β...
FIGURES
Journal Article
Published: 01 March 2004
European Journal of Mineralogy (2004) 16 (2): 353–359.
... with different rod-packings. Zincroselite and gaitite belong to the roselite and collinsite structure type, respectively. * E-mail: paul.keller@po.uni-stuttgart.de 27 11 2003 05 03 2003 05 11 2003 E. Schweizerbart'sche Verlagsbuchhandlung, D-70176 Stuttgart 2004 zincroselite...
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Journal Article
Published: 01 July 2006
European Journal of Mineralogy (2006) 18 (4): 471–482.
... = 402.75(14) Å 3 , Z = 2; R(F) = 1.42%] and adopts type D in the classification of Fleck et al. (2002b) ; it is isotypic with the three arsenates brandtite, roselite, zincroselite, and the sulphate kröhnkite. Infinite kröhnkite-type tetrahedral-octahedral chains [(Mg,Co)(AsO 4 ) 2 (H 2 O) 2 ] 2...
FIGURES | View All (6)
Journal Article
Published: 21 October 2022
The Canadian Mineralogist (2022) 60 (5): 837–847.
... collinsite, talmessite, cassidyite, parabrandtite, roselite-β, and gaitite; Type B is also triclinic ( P ) and includes fairfieldite and messelite. The kröhnkite-type chains and their linkage to layers are identical in Type A and Type B materials, but the stacking of the layers is different: Two adjacent...
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Journal Article
Published: 01 October 2006
The Canadian Mineralogist (2006) 44 (5): 1181–1196.
... AND FAIRFIELDITE All calculations were done with the SHELTXL PC Plus software package. Crystal-structure refinements of brandtite, collinsite and fairfieldite were initiated with the atom coordinates of roselite ( Hawthorne & Ferguson 1977 ), collinsite ( Brotherton et al. 1974 ) and fairfieldite...
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Journal Article
Published: 01 August 2012
European Journal of Mineralogy (2012) 24 (4): 717–726.
... species, including erythrite ( Jacob & Schubnel, 1972 ), roselite, roselite-β, skutterudite and gersdorffite, and more recently cobaltaustinite, cobaltlotharmeyerite, karibibite and vladimirite. In this paper we describe the new mineral “maghrebite” from the Aghbar Open Pit in the Bou Azzer...
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Journal Article
Published: 01 July 2018
European Journal of Mineralogy (2018) 30 (4): 785–800.
...-roselite 5.867(3) 6.955(2) 5.554(3) 97.42(3) 109.00(3) 108.07(3) 196.93 Frondel, 1955 Ca 2.04 (Ni 0.77 Mg 0.13 Co 0.06 )(AsO 4 ) 2 ·2H 2 O, nickeltalmessite 5.858(7) 7.082(12) 5.567(6) 97.20(4) 109.11(5) 109.78(5) 198.04 Chukanov et al. , 2010 Ca 2 (Co 0.532 Mg 0.468 )(AsO 4...
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Journal Article
Published: 01 August 2003
The Canadian Mineralogist (2003) 41 (4): 981–988.
... of the triclinic members of the fairfieldite group of minerals ( Table 1 ), Catti et al. (1977) distinguished two subgroups on the basis of the α and γ values, with fairfieldite and messelite in one subgroup, and collinsite, talmessite, roselite-beta, and cassidyite in the other. The same authors showed...
FIGURES
Journal Article
Published: 01 August 2001
The Canadian Mineralogist (2001) 39 (4): 1081–1094.
... to the roselite and fairfieldite groups. IR spectra of roselite and wendwilsonite are, for instance, quite different from those of their triclinic counterparts owing to splitting in the region of the stretching and bending modes of the anion group ( Pekov et al. 2001 ). The IR spectra obtained in this work do...
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Journal Article
Published: 01 August 2022
American Mineralogist (2022) 107 (8): 1656–1658.
... analysis gave arsenate-belovite the composition Ca 2 Mg(AsO 4 ) 2 ·2H 2 O, but unfortunately, that composition and structure already corresponded to the mineral talmessite, and therefore arsenatebelovite was rejected. Dobšináite represents a new Ca- and As-dominant member of the roselite-group. The 1954...
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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Journal Article
Published: 28 December 2022
Mineralogical Magazine (2023) 87 (3): 465–469.
... S.H. and Tait K.T. ( 2011 ) Rruffite, Ca 2 Cu(AsO 4 ) 2 ⋅2H 2 O,a new member of the roselite group, from Tierra Amarilla, Chile . The Canadian Mineralogist , 49 , 877 – 884 . ...
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