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![( a ) Illite inclusions in hexagonal <span class="search-highlight">zaccagnaite</span>-3 R . Polished surface sli...]()
![( a – b ) <span class="search-highlight">Zaccagnaite</span>-3 R crystals in thin section (semi-crossed polars). ...]()
![Comparison between the calculated and experimental powder XRD profiles of z...]()
![( a ) Fe-Mn stromatolite section showing the alternation of dendritic and l...]()
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![COMPARISON OF MINERALOGICAL DATA FOR LIUDONGSHENGITE, <span class="search-highlight">ZACCAGNAITE</span>-3R, AND S...]()
![SELECTED BOND DISTANCES (Å) IN LIUDONGSHENGITE, <span class="search-highlight">ZACCAGNAITE</span>-3R, AND STICHTI...]()
![The crystal structure of <span class="search-highlight">zaccagnaite</span> represented down a (c vertical).]()
![SEM image of <span class="search-highlight">zaccagnaite</span> crystals, covered by a thin crust of fraipontite.]()
![Infrared spectra of <span class="search-highlight">zaccagnaite</span>-3 R (plus nordstrandite) in the 400 to 400...]()
![Co-variation between Si and K of <span class="search-highlight">zaccagnaite</span>-3 R from electron microprobe ...]()
![Sample ZB-2: ( a ) HAADF and ( b ) chemical map image of a fraipontite-rich...]()
![( a ) Differential thermal analysis (DTA) and thermogravimetry (TG) curves ...]()
![Morphology of <span class="search-highlight">zaccagnaite</span>-3 R crystals. ( a–b ) Regular octahedral forms; ...]()
![( a ) The structure of <span class="search-highlight">zaccagnaite</span> seen down c, with the brucite-like layer...]()
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1-20 OF 38 RESULTS FOR
zaccagnaite
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Journal Article
Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 2012
American Mineralogist (2012) 97 (4): 513–523.
...Rafael P. Lozano; Carlos Rossi; Ángel La Iglesia; Emilio Matesanz Abstract We have recently discovered significant amounts of zaccagnaite, a natural Zn-Al-CO 3 hydrotalcite in the El Soplao cave (north Spain). The El Soplao zaccagnaite is speleothemic, i.e., formed in the cave, and therefore...
FIGURES
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Includes: Supplemental Content
Journal Article
Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties, and structural features
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 October 2001
American Mineralogist (2001) 86 (10): 1293–1301.
...Stefano Merlino; Paolo Orlandi Abstract Two new mineral species, carraraite and zaccagnaite, were found in cavities in calcite veins in marble quarries of the Carrara basin (Apuan Alps, Italy). Carraraite, Ca 3 Ge(OH) 6 (SO 4 ) 1.08 (CO 3 ) 0.92 · 12H 2 O, occurs as submillimetric crystals, tabular...
FIGURES
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Image
( a ) Illite inclusions in hexagonal zaccagnaite-3 R . Polished surface sli...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 3 ( a ) Illite inclusions in hexagonal zaccagnaite-3 R . Polished surface slightly etched with 2% formic acid. SEM image. ( b ) Nordstrandite inclusions in hexagonal zaccagnaite-3 R . ( c ) Illite inclusions in concentric growth bands of hexagonal zaccagnaite-3 R . ( d ) Inclusion-free
Image
( a – b ) Zaccagnaite-3 R crystals in thin section (semi-crossed polars). ...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 4 ( a – b ) Zaccagnaite-3 R crystals in thin section (semi-crossed polars). ( c ) Octahedral and hexagonal crystals of zaccagnaite-3 R showing luminescent concentric growth bands. Thin section, UV epi-illumination. The yellow areas represent epoxy-filled porosity. The background green
Image
Comparison between the calculated and experimental powder XRD profiles of z...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 5 Comparison between the calculated and experimental powder XRD profiles of zaccagnaite-3 R . Tick marks under the scan correspond to reflections for zaccagnaite-3 R , nordstrandite, and quartz (top down).
Image
( a ) Fe-Mn stromatolite section showing the alternation of dendritic and l...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 1 ( a ) Fe-Mn stromatolite section showing the alternation of dendritic and laminar layers. ( b ) Dendritic stromatolite layers composed of Zn-Al-rich ferromanganese oxides. The zaccagnaite-3 R crystals are partially filling the primary porosity. Thin section, semi-crossed polars. ( c
Journal Article
Liudongshengite, Zn 4 Cr 2 (OH) 12 (CO 3 )·3H 2 O, a new mineral of the hydrotalcite supergroup, from the 79 mine, Gila County, Arizona, USA
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 13 September 2021
The Canadian Mineralogist (2021) 59 (4): 763–769.
... formula (Zn 3.25 Mg 0.17 Cr 2.58 ) Σ6.00 (OH) 12 (CO 3 ) 1.29 ·3H 2 O, based on ( M 2+ + M 3+ ) = 6 apfu , where M 2+ and M 3+ are divalent and trivalent cations, respectively. Liudongshengite belongs to the quintinite group within the hydrotalcite supergroup and is the Cr-analogue of zaccagnaite-3 R , Zn...
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Image
COMPARISON OF MINERALOGICAL DATA FOR LIUDONGSHENGITE, ZACCAGNAITE-3R, AND S...
in Liudongshengite, Zn 4 Cr 2 (OH) 12 (CO 3 )·3H 2 O, a new mineral of the hydrotalcite supergroup, from the 79 mine, Gila County, Arizona, USA
> The Canadian Mineralogist
Published: 13 September 2021
TABLE 3. COMPARISON OF MINERALOGICAL DATA FOR LIUDONGSHENGITE, ZACCAGNAITE-3R, AND STICHTITE
Image
SELECTED BOND DISTANCES (Å) IN LIUDONGSHENGITE, ZACCAGNAITE-3R, AND STICHTI...
in Liudongshengite, Zn 4 Cr 2 (OH) 12 (CO 3 )·3H 2 O, a new mineral of the hydrotalcite supergroup, from the 79 mine, Gila County, Arizona, USA
> The Canadian Mineralogist
Published: 13 September 2021
TABLE 5. SELECTED BOND DISTANCES (Å) IN LIUDONGSHENGITE, ZACCAGNAITE-3R, AND STICHTITE
Image
The crystal structure of zaccagnaite represented down a (c vertical).
in Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties, and structural features
> American Mineralogist
Published: 01 October 2001
F igure 5. The crystal structure of zaccagnaite represented down a (c vertical).
Image
SEM image of zaccagnaite crystals, covered by a thin crust of fraipontite.
in Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties, and structural features
> American Mineralogist
Published: 01 October 2001
F igure 2. SEM image of zaccagnaite crystals, covered by a thin crust of fraipontite.
Image
Infrared spectra of zaccagnaite-3 R (plus nordstrandite) in the 400 to 400...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 8 Infrared spectra of zaccagnaite-3 R (plus nordstrandite) in the 400 to 4000 cm −1 region.
Image
Co-variation between Si and K of zaccagnaite-3 R from electron microprobe ...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 6 Co-variation between Si and K of zaccagnaite-3 R from electron microprobe (EMP) data (n = 182; R 2 = 0.8).
Image
Sample ZB-2: ( a ) HAADF and ( b ) chemical map image of a fraipontite-rich...
in The nature of Zn-phyllosilicates in the nonsulfide Mina Grande and Cristal zinc deposits (Bongará District, Northern Peru): The TEM-HRTEM and AEM perspective
> American Mineralogist
Published: 01 August 2020
Figure 7. Sample ZB-2: ( a ) HAADF and ( b ) chemical map image of a fraipontite-rich area, with a possible replacement by zaccagnaite (in the dashed areas); see in particular the C peak in the EDX spectrum. ( c ) Si distribution in b . (Color online.)
Image
( a ) Differential thermal analysis (DTA) and thermogravimetry (TG) curves ...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 7 ( a ) Differential thermal analysis (DTA) and thermogravimetry (TG) curves of zaccagnaite-3 R (plus nordstrandite). ( b ) Relative ion currents of CO 2 , H 2 O, and O 2 , together with the derivative thermogravimetry (DTG).
Image
Morphology of zaccagnaite-3 R crystals. ( a–b ) Regular octahedral forms; ...
in Zaccagnaite-3 R , a new Zn-Al hydrotalcite polytype from El Soplao cave (Cantabria, Spain)
> American Mineralogist
Published: 01 April 2012
Figure 2 Morphology of zaccagnaite-3 R crystals. ( a–b ) Regular octahedral forms; ( c ) irregular octahedral forms; ( d ) hexagonal pyramid; ( e–f ) hexagonal short prisms. SEM images of broken specimens. ( g ) Skeletal crystals. BSE image.
Image
( a ) The structure of zaccagnaite seen down c, with the brucite-like layer...
in Carraraite and zaccagnaite, two new minerals from the Carrara marble quarries: their chemical compositions, physical properties, and structural features
> American Mineralogist
Published: 01 October 2001
F igure 6. ( a ) The structure of zaccagnaite seen down c, with the brucite-like layer represented in terms of polyhedra and the interlayer oxygen atoms distributed on three symmetry related positions. ( b ) Ordering of the metal atoms in the brucite layer. The supercell ( a ’ = √3
Journal Article
The nature of Zn-phyllosilicates in the nonsulfide Mina Grande and Cristal zinc deposits (Bongará District, Northern Peru): The TEM-HRTEM and AEM perspective
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 2020
American Mineralogist (2020) 105 (8): 1223–1241.
...Figure 7. Sample ZB-2: ( a ) HAADF and ( b ) chemical map image of a fraipontite-rich area, with a possible replacement by zaccagnaite (in the dashed areas); see in particular the C peak in the EDX spectrum. ( c ) Si distribution in b . (Color online.) ...
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Journal Article
Crystal chemistry of natural layered double hydroxides. 3. The crystal structure of Mg,Al-disordered quintinite-2 H
Journal: Mineralogical Magazine
Published: 01 October 2010
Mineralogical Magazine (2010) 74 (5): 841–848.
... ] ( Bonaccorsi et al. 2007 ). The only reports of natural LDH carbonates with confirmed M 2+ - M 3+ order are the structures of quintinite-2 H -1 c ( Arakcheeva et al. , 1996 ), quintinite-2 H -3 c ( Krivovichev et al. , 2010 a ) and quintinite-1 M ( Krivovichev et al. , 2010 b ). In zaccagnaite...
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Journal Article
Paulišite, Ca 2 Zn(CO 3 ) 3 ·2H 2 O, a new mineral with a novel crystal structure
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 21 June 2024
American Mineralogist (2024)
..., and Matesanz, E. (2012) Zaccagnaite-3R, a new Zn-Al 432 hydrotalcite polytype from El Soplao cave (Cantabria, Spain). American Mineralogist, 97, 433 513-523. 434 Malec, J., and Pauli , P. (1997) The Kutná Hora ore district and manifestations of defunct mining 435 and metallurgical activities on its territory...
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