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hydrozincite

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Journal Article
Published: 01 July 2013
American Mineralogist (2013) 98 (7): 1219–1226.
...Roberta Sanna; Giovanni De Giudici; Andrea Mariano Scorciapino; Costantino Floris; Mariano Casu Abstract To better understand lattice disorder in hydrozincite, natural hydrozincite samples and synthetic analogues were investigated by XRD, FTIR, 13 C MAS, and 13 C CPMAS NMR. The size of coherent...
FIGURES | View All (8)
Journal Article
Published: 01 August 2010
European Journal of Mineralogy (2010) 22 (4): 557–564.
...Pierfranco Lattanzi; Chiara Maurizio; Carlo Meneghini; Giovanni de Giudici; Francesca Podda Abstract The activity of a biological photosynthetic community promotes the seasonal precipitation of hydrozincite, Zn 5 (CO 3 ) 2 (OH) 6 , from heavy-metal contaminated waters of the Rio Naracauli stream...
FIGURES | View All (6)
Journal Article
Published: 01 November 2009
American Mineralogist (2009) 94 (11-12): 1698–1706.
...Giovanni De Giudici; Francesca Podda; Roberta Sanna; Elodia Musu; Riccardo Tombolini; Carla Cannas; Anna Musinu; Mariano Casu Abstract The microscopic properties of biomineral hydrozincite [Zn 5 (CO 3 ) 2 (OH) 6 ] from Naracauli Creek (SW Sardinia) were investigated by using X-ray diffraction (XRD...
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Journal Article
Published: 01 August 1998
American Mineralogist (1998) 83 (7-8): 739–745.
...M. A. Mercy; Peter A. Rock; William H. Casey; Mehdi M. Mokarram Abstract New values are reported for the Gibbs energies of formation from the elements for hydrocerussite Pb(OH) 2 .(PbCO 3 ) 2 and hydrozincite [Zn(OH) 2 ] 3 .(ZnCO 3 ) 2 . These Delta G 0 f , values were obtained from electrochemical...
Journal Article
Published: 01 December 1966
The Canadian Mineralogist (1966) 8 (5): 649–652.
Journal Article
Published: 01 December 1965
The Canadian Mineralogist (1965) 8 (3): 385–389.
... are given. The morphology of crystals from Mapimi, Mexico, is described; a reported perfect (100) cleavage could not be verified. Measured specific gravity is 3.96+ or -0.03. For hydrozincite from Goodsprings, Nev., known space group and unit cell dimensions were confirmed; twinning about (100) was observed...
Journal Article
Published: 01 December 1964
The Canadian Mineralogist (1964) 8 (1): 92–108.
Journal Article
Published: 01 December 1966
The Canadian Mineralogist (1966) 8 (5): 652–653.
...J. L. Jambor Abstract Continuous variations in cell dimensions in synthetic hydrozincites and the gradual changes in infrared curves in natural hydrozincites preclude dividing hydrozincites into an ordered and disordered phase. © 1966 Mineralogical Association of Canada 1966 ...
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Most representative nonsulfide samples. A. Early smithsonite (Sm1) replacin...
Published: 01 August 2017
Fig. 7. Most representative nonsulfide samples. A. Early smithsonite (Sm1) replacing host rock, replaced in turn by spongy hydrozincite (Hyd1), cut by veinlets of compact hydrozincite (Hyd2); sample ZA-5. B. Hydrozincite crust with concretionary texture (Hyd3); sample ZA-7. C. Late hemimorphite
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Backscattered electron images (BSE) of the most common Zn-bearing nonsulfid...
Published: 01 August 2017
Fig. 8. Backscattered electron images (BSE) of the most common Zn-bearing nonsulfide minerals. A. Compact hydrozincite (Hyd2) filling microcavities in the spongy variety (Hyd1); sample ZA-5. B. Crusts of late hemimorphite (Hm2) on the rim of goethite-rich zones (Gth), precede a layer of compact
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FTIR spectra of WM9 and WM13 hemimorphite and <span class="search-highlight">hydrozincite</span> samples ( a  and...
Published: 01 May 2018
Figure 2. FTIR spectra of WM9 and WM13 hemimorphite and hydrozincite samples ( a and b ). The enlargement at the bottom ( b ) better shows the region 1800–400 cm –1 .
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Fourier transforms of EXAFS spectra. In <span class="search-highlight">hydrozincite</span>, shells beyond the sec...
Published: 01 August 2010
Fig. 4. Fourier transforms of EXAFS spectra. In hydrozincite, shells beyond the second are weak and ill-defined.
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Equilibrium relationship for <span class="search-highlight">hydrozincite</span> [Zn 5 (CO 3 ) 2 (OH) 6 ] and Zn 2...
Published: 01 January 2010
F igure 1. Equilibrium relationship for hydrozincite [Zn 5 (CO 3 ) 2 (OH) 6 ] and Zn 2 CO 3 (OH) 2 .
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(a) Zincite covered by products of decomposition (mixture of <span class="search-highlight">hydrozincite</span> a...
Published: 01 October 2008
F ig . 3. (a) Zincite covered by products of decomposition (mixture of hydrozincite and sulfates?). (b) Fine inter-growths of barite and mimetite. (c) Crystal of anglesite. (d) Hedyphane needles in a vesicle in slag. (e) Needles of secondary zincite covered by bryanyoungite. (f) Zn-dominant
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Time-resolved luminescence spectra of <span class="search-highlight">hydrozincite</span> at 266 nm laser excitati...
Published: 01 November 2002
Fig. 4. Time-resolved luminescence spectra of hydrozincite at 266 nm laser excitation (a) and excitation spectrum of emission band at 430 nm (b).
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Textures of hemimorphite, smithsonite, and calcite in thin sections. A, B. ...
Published: 01 August 2017
Fig. 9. Textures of hemimorphite, smithsonite, and calcite in thin sections. A, B. Fan-shaped aggregates of platy hemimorphite crystals filling fracture in spongy hydrozincite (Hyd1)/early hemimorphite (Hm1) mixture; sample ZB-2 (N II, N+). C, D. Crustiform layers of late smithsonite (Sm2
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Near-edge region of the XAS spectra collected on the measured samples (righ...
Published: 01 August 2010
Fig. 2. Near-edge region of the XAS spectra collected on the measured samples (right panel), with their derivatives (left panel), vertically shifted for the sake of clarity. The spectra (and their derivatives) for hydrozincite samples (lower curves: S, synthetic hydrozincite; N, natural
Journal Article
Published: 21 June 2024
American Mineralogist (2024)
... Kutná Hora, central Bohemia, Czech Republic. Paulišite is associated with hydrozincite and aragonite (holotype sample) or with calcite, aragonite, hydrozincite and monohydrocalcite (other samples). The new mineral occurs as crusts, up to 1 cm thick, formed by parallel or radial aggregates of acicular...
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δ 13 C and δ 18 O values of carbonate minerals at Mina Grande, and comparis...
Published: 01 August 2017
paragenetically following sphalerite ( Reid, 2001 ); HR Cal = host rock calcite; HY Dol = hydrothermal dolomite in the Bongará district ( Reid, 2001 ); Hyd1 = spongy hydrozincite; Hyd2 = compact hydrozincite; Hyd3 = needle-shaped hydrozincite; Mix. Hyd = mixture of Hyd1, 2, and 3; Sm = supergene smithsonite field
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Paragenesis and timing of the hydrothermal and supergene minerals in the Mi...
Published: 01 August 2017
Fig. 13. Paragenesis and timing of the hydrothermal and supergene minerals in the Mina Grande deposit. Hm1 = hemimorphite after the first oxidation stage; Hyd1 = stage 1 hydrozincite after the first oxidation stage; Hm2 and Hyd2 = later hemimorphite and hydrozincite after the postoxidation stage