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rollandite

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Journal Article

Rollandite, Cu 3 (AsO 4 ) 2 -4H 2 O, a new mineral : its description and crystal structure Available to Purchase

Halil SARP, Radovan ČERNÝ
Published: 01 September 2000
European Journal of Mineralogy (2000) 12 (5): 1045–1050.
DOI: https://doi.org/10.1127/0935-1221/2000/0012-1045
...Halil SARP; Radovan ČERNÝ Abstract Rollandite, Cu 3 (AsO 4 ) 2 -4H 2 O, was found in the old copper mines of Roua (Alpes-Maritimes, France), associated with olivenite, conichalcite, clinotyrolite, cornubite, kolfanite, pharmacosiderite, gerhardtite, atacamite, gilmarite, wallkilldellite-Fe...
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Chemical analysis [wt.%] of rollandite. Available to Purchase

Published: 01 September 2000
Table 1. Chemical analysis [wt.%] of rollandite.
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Atom positions and displacement parameters for rollandite. Available to Purchase

Published: 01 September 2000
Table 3. Atom positions and displacement parameters for rollandite.
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Selected interactomic distances (Å) for rollandite. Available to Purchase

Published: 01 September 2000
Table 4. Selected interactomic distances (Å) for rollandite.
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Bond valence (vu) table for rollandite. Available to Purchase

Published: 01 September 2000
Table 5. Bond valence (vu) table for rollandite.
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X-ray powder diffraction data for rollandite (d in Å). Available to Purchase

Published: 01 September 2000
Table 2. X-ray powder diffraction data for rollandite (d in Å).
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SEM image of rollandite crystals, elongated parallel to a, and slightly flattened on {010}. Acicular crystals are olivenite.

SEM image of rollandite crystals, elongated parallel to a, and slightly f... Available to Purchase

Published: 01 September 2000
Fig. 1. SEM image of rollandite crystals, elongated parallel to a, and slightly flattened on {010}. Acicular crystals are olivenite.
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The structures of the arsenates with infinite frameworks of tetrahedra and MφN polyhedra: (a) rollandite, (b) euchroite, (c) cornwallite, (d) cornubite, (e) flinkite, (f) retzian.

The structures of the arsenates with infinite frameworks of tetrahedra and ... Available to Purchase

Published: 01 January 2014
Figure 46 The structures of the arsenates with infinite frameworks of tetrahedra and Mφ N polyhedra: (a) rollandite, (b) euchroite, (c) cornwallite, (d) cornubite, (e) flinkite, (f) retzian.
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The sheets of edge-sharing octahedra which are the basic building units of rollandite parallel to (020). The grey scale of the coordination polyhedra corresponds to Fig. 2.

The sheets of edge-sharing octahedra which are the basic building units of ... Available to Purchase

Published: 01 September 2000
Fig. 3. The sheets of edge-sharing octahedra which are the basic building units of rollandite parallel to (020). The grey scale of the coordination polyhedra corresponds to Fig. 2.
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The structure of rollandite viewed approx. down [100]. The Cul octahedra are light grey, the Cu2 square pyramids are medium grey and the As tetrahedra are in dark grey. Hydrogen bonds are shown as black thick lines, the outlines of the unit cell are dashed.

The structure of rollandite viewed approx. down [100]. The Cul octahedra ar... Available to Purchase

Published: 01 September 2000
Fig. 2. The structure of rollandite viewed approx. down [100]. The Cul octahedra are light grey, the Cu2 square pyramids are medium grey and the As tetrahedra are in dark grey. Hydrogen bonds are shown as black thick lines, the outlines of the unit cell are dashed.
Journal Article

Davidlloydite, ideally Zn 3 (AsO 4 ) 2 (H 2 O) 4 , a new arsenate mineral from the Tsumeb mine, Otjikoto (Oshikoto) region, Namibia: description and crystal structure Available to Purchase

F. C. Hawthorne, M. A. Cooper, Y. A. Abdu, N. A. Ball, M. E. Back, K. T. Tait
Published: 01 February 2012
Mineralogical Magazine (2012) 76 (1): 45–57.
DOI: https://doi.org/10.1180/minmag.2012.076.1.45
... , such as phosphophyllite, Zn 2 Fe(PO 4 ) 2 (H 2 O) 4 ; ludlamite, Fe 3 (PO 4 ) 2 (H 2 O) 4 and rollandite, Cu 3 (AsO 4 ) 2 (H 2 O) 4 , have different M-coordination environments (i.e. not [6] M [4] M 2 ) and represent structural variants ( Hill, 1977 ; Abrahams and Bernstein, 1966 ; Sarp and Černy, 2000 ). T...
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Arsenohopeite, a new zinc arsenate mineral from the Tsumeb mine, Namibia Available to Purchase

F. Neuhold, U. Kolitsch, H.-J. Bernhardt, C. L. Lengauer
Published: 01 June 2012
Mineralogical Magazine (2012) 76 (3): 603–612.
DOI: https://doi.org/10.1180/minmag.2012.076.3.11
..., a polymorph of reinerite; Harrison, 2010 ). Arsenohopeite has the same stoichiometry as rollandite, Cu 3 (AsO 4 ) 2 ·4H 2 O ( Sarp and Černý, 2000 ; orthorhombic, Pnma , but with an unrelated structure) and sterlinghillite, Mn 3 (AsO 4 ) 2 ·4H 2 O ( Dunn, 1981 ), whose structure is unknown...
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INTERESTING PAPERS IN OTHER JOURNALS Available to Purchase

Journal: Economic Geology
Published: 01 December 2000
Economic Geology (2000) 95 (8): 1793–1796.
DOI: https://doi.org/10.2113/gsecongeo.95.8.1793
..., and A. Sbrana 1025 Rollandite, Cu3(AsO 4 ) 2 ⋅4H 2 O, A new mineral: Its description and crystal structure— H. Sarp and R. Cerný 1045 The effect of pH and temperature on the isotopic fractionation of boron between saline brine and sediments— Xiao Yingkai and Wang Lan 253 Pb...
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NEW MINERAL NAMES Available to Purchase

John L. Jambor, Andrew C. Roberts
Published: 01 May 2001
American Mineralogist (2001) 86 (5-6): 767–770.
... , a = 5.6906(4), b = 17.061(1), c = 9.732(1) Å. Strongest lines of a Gandolfi powder pattern (114 mm, Cu K α radiation) are 8.520(100,020), 3.721(60,131), 3.221(90,141,051), 3.102(40,132), 2.817(35,103,233), and 2.795(35,142). H. Sarp, R. Černý (2000) Rollandite, Cu 3 (AsO 4 ) 2 ·4H 2 O, a new...
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NEW MINERALS Available to Purchase

Joseph A. Mandarino
Published: 01 October 2001
The Canadian Mineralogist (2001) 39 (5): 1473–1502.
DOI: https://doi.org/10.2113/gscanmin.39.5.1473
... 65 , 111 –120. Name : After Pierre Rolland (b. 1940), an eminent collector of minerals from the Roua mines. S arp , H. & Č erny , R. ( 2000 ): Rollandite, Cu 3 (AsO 4 ) 2 ·4H 2 O, a new mineral: its description and crystal structure. European Journal of Mineralogy 12...
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Parageneses and Crystal Chemistry of Arsenic Minerals Available to Purchase

Juraj Majzlan, Petr Drahota, Michal Filippi
Published: 01 January 2014
Reviews in Mineralogy and Geochemistry (2014) 79 (1): 17–184.
DOI: https://doi.org/10.2138/rmg.2014.79.2
...Figure 46 The structures of the arsenates with infinite frameworks of tetrahedra and Mφ N polyhedra: (a) rollandite, (b) euchroite, (c) cornwallite, (d) cornubite, (e) flinkite, (f) retzian. ...
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Thermodynamic Properties for Arsenic Minerals and Aqueous Species Available to Purchase

D. Kirk Nordstrom, Juraj Majzlan, Erich Königsberger
Published: 01 January 2014
Reviews in Mineralogy and Geochemistry (2014) 79 (1): 217–255.
DOI: https://doi.org/10.2138/rmg.2014.79.4
...− −35.17 Wagman et al. (1982)  Cu 3 (AsO 4 ) 2 (lammerite) + 2H + ⇌ 3Cu 2+ + 2HAsO 4 2− −13.52 ± 0.08 Nelson et al. (2011)  Cu 3 (AsO 4 ) 2 ·4H 2 O (rollandite) ⇌ 3Cu 2+ + 2AsO 4 3− + 4H 2 O −38.88 Charykova et al. (2010) Fe arsenates  FeAsO 4 (crystalline) ⇌ Fe 3+ + AsO...
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