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claraite

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Journal Article
Published: 26 June 2017
European Journal of Mineralogy (2017) 29 (6): 1031–1044.
...Cristian Biagioni; Paolo Orlandi Since the beginning of the 2000s, several authors reported the occurrence of As and S as chemical components of the hydrated copper hydroxy-carbonate claraite, originally described with the formula (Cu,Zn) 3 (CO 3 )(OH) 4 ·4H 2 O. Owing to the lack of knowledge...
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<span class="search-highlight">Claraite</span>, thin tabular crystals associated with an unidentified fibrous Cu–...
Published: 26 June 2017
Fig. 1 Claraite, thin tabular crystals associated with an unidentified fibrous Cu–Zn chloro-arsenate–carbonate. Gioia quarries, Carrara, Apuan Alps, Tuscany, Italy. Collection Museo di Storia Naturale, University of Pisa. Catalogue number 19899.
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Raman spectra of <span class="search-highlight">claraite</span>. In (a), the region between 200 and 1200 cm −1  o...
Published: 26 June 2017
Fig. 2 Raman spectra of claraite. In (a), the region between 200 and 1200 cm −1 of samples from Carrara and the Clara mine (holotype specimen NMNH 148464) is shown. In (b), the region between 3000 and 4000 cm −1 of the sample from Carrara is shown. The Raman shift (in cm −1 ) of the main Raman
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Crystal structure of <span class="search-highlight">claraite</span> as seen down [1 0 0]. Polyhedra: green = Cu s...
Published: 26 June 2017
Fig. 3 Crystal structure of claraite as seen down [1 0 0]. Polyhedra: green = Cu sites; violet = As sites; black = C sites; yellow = S sites. Circles: red = O sites; blue = OH sites; light blue = H 2 O sites. The unit cell is outlined.
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Ball-and-stick representation of the crystal structure of <span class="search-highlight">claraite</span>. (a) The...
Published: 26 June 2017
Fig. 5 Ball-and-stick representation of the crystal structure of claraite. (a) The arsenate–carbonate-bearing {0 0 1} layer; a (0  2 ¯  5) atomic layer is indicated by the dashed red line; (b) the sulfate-bearing layer. Symbols: green = Cu sites; violet = As sites; black = C sites
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Different kinds of (Cu,Zn) coordination polyhedra occurring in <span class="search-highlight">claraite</span>. (a...
Published: 26 June 2017
Fig. 6 Different kinds of (Cu,Zn) coordination polyhedra occurring in claraite. (a) A (4+2) distorted octahedron; (b) a (2+4) distorted octahedron; and (c) a square pyramidal polyhedron. Thick lines represent Cu–ϕ bond distances < ~2 Å, whereas dotted lines represent Cu–f bond distances
Journal Article
Published: 01 December 2016
Mineralogical Magazine (2016) 80 (7): 1315–1321.
...+2x with x ≤ 4, is discredited. A re-examination of original material shows that all samples are heterogeneous, and hence not constituted by a single mineral. IMA 16-L: Claraite Proposal 16-L is accepted, and claraite is redefined as a copper hydrated hydroxy-carbonate-arsenate-sulfate...
Journal Article
Published: 01 January 2003
American Mineralogist (2003) 88 (1): 251–255.
... with naumannite and chalcomenite, in a malachite-rich assemblage at the Copper Hills deposit, a polymetallic vein-type occurrence in the East Pilbara region of Western Australia. J.L.J. K. Walenta ( 1999 ) On the lattice constants of claraite. Der Erzgräber , 13 , 20 –22 (in German). Two...
Journal Article
Published: 01 April 2021
American Mineralogist (2021) 106 (4): 633–640.
... ( Ma et al. 2014 ), claraite, (Cu,Zn) 15 (CO 3 ) 4 (AsO 4 ) 2 (SO 4 )(OH) 14 ·7H 2 O ( Biagioni and Orlandi 2017 ), and leogangite, Cu 10 (AsO 4 ) 4 (SO 4 )(OH) 6 ·8H 2 O ( Lengauer et al. 2004 ), and suggested for parnauite Cu 9 (AsO 4 ) 2 (SO 4 ) (OH) 10 ·7H 2 O ( Mills et al. 2013 ). The crystal...
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Journal Article
Published: 01 April 2016
American Mineralogist (2016) 101 (4): 889–906.
... [Mg 2 (CO 3 )(OH) 2 ·3H 2 O] Fe 2 (CO 3 )(OH) 2 ·3H 2 O Fe 3 (CO 3 )(OH) 4 ·4H 2 O claraite [Cu 2+ 3 (CO 3 )(OH) 4 ·4H 2 O] Mg 3 (CO 3 )(OH) 4 ·4H 2 O Fe 5 (CO 3 ) 4 (OH) 2 ·4H 2 O hydromagnesite [Mg 5 (CO 3 ) 4 (OH) 2 ·4H 2 O] Fe 5 (CO 3 ) 4 (OH) 2 ·5H 2 O dypingite, giorgiosite...
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Journal Article
Published: 15 July 2019
The Canadian Mineralogist (2019) 57 (4): 427–456.
... (assemblage SS5c; Fig. 4 ); at one locality in the vein, mined in 1982, an assemblage (SS5d) of claraite, malachite, and theisite formed in the vicinity of partly limonitized ankerite. The galena in the Diagonaltrum was altered to produce a wide variety of typical supergene Pb minerals such as cerussite...
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Journal Article
Published: 01 January 2013
Reviews in Mineralogy and Geochemistry (2013) 75 (1): 7–46.
... 2 Pb 5 (SO 4 ) 3 (CO 3 )(OH) 6 Calkinsite-(Ce) (Ce,REE) 2 (CO 3 ) 2 ·4H 2 O Callaghanite Cu 2 Mg 2 CO 3 (OH) 6 ·2H 2 O Carbonatecyanotrichite Cu 4 Al 2 CO 3 (OH) 12 ·2H 2 O Chalconatronite Na 2 Cu(CO 3 ) 2 ·3H 2 O Claraite Cu 2+ 3 CO 3 (OH) 4 ·4H 2 O Coalingite Mg 10 Fe 3...
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