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zemannite

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Crystal Chemistry of Zemannite-Type Structures: III. Keystoneite, the Ni 2+ -Analogue of Zemannite, and Ferrotellurite Discredited

Owen P. Missen, Malcolm E. Back, Stuart J. Mills, Andrew C. Roberts, Yvon LePage, William W. Pinch, Joseph A. Mandarino
Published: 01 April 2021
The Canadian Mineralogist (2021) 59 (2): 355–364.
DOI: https://doi.org/10.3749/canmin.2000009
... of keystoneite is presented. Keystoneite is the Ni 2+ analogue of zemannite and has the ideal zemannite-like formula of Mg 0.5 Ni 2+ Fe 3+ (Te 4+ O 3 ) 3 ·4H 2 O. The chemical composition via electron-probe micro-analysis (in wt.%; standard deviations in brackets) is Na 2 O 0.3 (0.2), K 2 O 0.1 (0.0), MgO 4.3...
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Crystal chemistry of zemannite-type structures: II. Synthetic sodium zemannite

Owen P. Missen, Stuart J. Mills, John Spratt
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 529–536.
DOI: https://doi.org/10.1127/ejm/2019/0031-2834
...Owen P. Missen; Stuart J. Mills; John Spratt New zemannite-type phases, from Na 1.25 Fe 0.75 3 + Zn 1.25 ( Te O 3 ) 3 ∙ 3 H 2 O to Na 0.55 Fe 1.44 3 + Zn 0.56 ( Te O 3 ) 3 ∙ 3 H 2 O have been synthesised hydrothermally under basic conditions from a mixture of tellurium dioxide, zinc oxide...
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Crystal chemistry of zemannite-type structures: I. A re-examination of zemannite from Moctezuma, Mexico

Owen P. Missen, Stuart J. Mills, John Spratt, William D. Birch, Joël Brugger
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 519–527.
DOI: https://doi.org/10.1127/ejm/2019/0031-2806
...Owen P. Missen; Stuart J. Mills; John Spratt; William D. Birch; Joël Brugger The crystal structure of zemannite has been re-examined in order to address several features worthy of discussion. Analyses were performed on the type specimen and on material representative of Moctezuma. Type zemannite...
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Crystal chemistry of zemannite-type structures: IV. Wortupaite, the first new tellurium oxysalt mineral described from an Australian locality

Owen P. Missen, Stuart J. Mills, Joël Brugger, William D. Birch, Peter Elliott
Published: 24 August 2023
Mineralogical Magazine (2023) 87 (6): 908–915.
DOI: https://doi.org/10.1180/mgm.2023.64
...Owen P. Missen; Stuart J. Mills; Joël Brugger; William D. Birch; Peter Elliott Abstract Wortupaite (IMA2022–107) is a new hydrated magnesium nickel tellurite mineral with a zemannite-like structure, described from the Wortupa gold mine, South Australia, Australia. Wortupaite forms needles up to 25...
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Reinvestigation of the zemannite structure and its dehydration behavior: a single-crystal X-ray and atomistic simulation study

Georgia Cametti, Sergey Churakov, Thomas Armbruster
Published: 01 March 2017
European Journal of Mineralogy (2017) 29 (1): 53–61.
DOI: https://doi.org/10.1127/ejm/2017/0029-2587
...Georgia Cametti; Sergey Churakov; Thomas Armbruster Abstract Single-crystal X-ray data were collected in steps of 25 °C up to 200 °C on a natural sample of zemannite, Mg 0.5 [ZnFe 3+ (TeO 3 ) 3 ]·4.5H 2 O. Ab initio simulations were performed to determine the hydrogen-bonding network to get better...
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Crystal chemistry of the microporous tellurite minerals zemannite and kinichilite, Mg0.2 [Me (super 2+) Fe (super 3+) (TeO 3 ) 3 ] . 4.5H 2 O, (Me (super 2+) = Zn;Mn)

Ronald Miletich
Published: 01 June 1995
European Journal of Mineralogy (1995) 7 (3): 509–523.
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Zemannite, a zinc tellurite from Moctezuma, Sonora, Mexico

J. A. Mandarino, E. Matzat, S. J. Williams
Published: 01 August 1976
The Canadian Mineralogist (1976) 14 (3): 387–390.
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Ilirneyite, Mg 0.5 [ZnMn 3+ (TeO 3 ) 3 ]·4.5H 2 O, a New Mineral from Chukotka, Russia

Igor V. Pekov, Oleg I. Siidra, Evgeniy A. Vlasov, Vasiliy O. Yapaskurt, Yury S. Polekhovsky, Andrey V. Apletalin
Published: 01 November 2018
The Canadian Mineralogist (2018) 56 (6): 913–921.
DOI: https://doi.org/10.3749/canmin.1800028
...Igor V. Pekov; Oleg I. Siidra; Evgeniy A. Vlasov; Vasiliy O. Yapaskurt; Yury S. Polekhovsky; Andrey V. Apletalin Abstract The new mineral ilirneyite, ideally Mg 0.5 [ZnMn 3+ (Te 4+ O 3 ) 3 ]·4.5H 2 O, a member of the zemannite structural family, was found at the Sentyabr'skoe Ag-Au deposit, Ilirney...
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Scanning electron microscopy images of holotype wortupaite specimen (Museum...

Scanning electron microscopy images of holotype wortupaite specimen (Museum...

Published: 24 August 2023
Figure 3. Scanning electron microscopy images of holotype wortupaite specimen (Museums Victoria M2021) showing bunches of hexagonal prismatic needles analogous to zemannite.
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COMPARATIVE DATA FOR MINERALS BELONGING TO THE <span class="search-highlight">ZEMANNITE</span> STRUCTURAL FAMILY

COMPARATIVE DATA FOR MINERALS BELONGING TO THE ZEMANNITE STRUCTURAL FAMILY

Published: 01 November 2018
TABLE 7. COMPARATIVE DATA FOR MINERALS BELONGING TO THE ZEMANNITE STRUCTURAL FAMILY
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Powder XRD data ( d in Å) for wortupaite with comparisons to <span class="search-highlight">zemannite</span> and...

Powder XRD data ( d in Å) for wortupaite with comparisons to zemannite and...

Published: 24 August 2023
Table 2. Powder XRD data ( d in Å) for wortupaite with comparisons to zemannite and keystoneite shown for comparison. * * The five strongest observed lines are highlighted in bold. Cutoff: averaged I >5.
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POWDER X-RAY DIFFRACTION DATA FOR KEYSTONEITE, WITH SYNTHETIC Na-KEYSTONEIT...

POWDER X-RAY DIFFRACTION DATA FOR KEYSTONEITE, WITH SYNTHETIC Na-KEYSTONEIT...

Published: 01 April 2021
TABLE 2. POWDER X-RAY DIFFRACTION DATA FOR KEYSTONEITE, WITH SYNTHETIC Na-KEYSTONEITE (DESCRIBED ABOVE) AND ZEMANNITE FOR COMPARISON
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A large number of brown, elongated crystals of <span class="search-highlight">zemannite</span> on the zemmoc spec...

A large number of brown, elongated crystals of zemannite on the zemmoc spec...

Published: 01 May 2019
Fig. 3 A large number of brown, elongated crystals of zemannite on the zemmoc specimen (M53996, Museums Victoria).
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A representative IR spectrum of the synthetic <span class="search-highlight">zemannite</span>-type structures, ze...

A representative IR spectrum of the synthetic zemannite-type structures, ze...

Published: 01 May 2019
Fig. 2 A representative IR spectrum of the synthetic zemannite-type structures, zemsyn12, though all are very similar.
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Variation of unit-cell volume of <span class="search-highlight">zemannite</span> upon partial dehydration as a fu...

Variation of unit-cell volume of zemannite upon partial dehydration as a fu...

Published: 01 March 2017
Fig. 5 Variation of unit-cell volume of zemannite upon partial dehydration as a function of temperature. (Online version in colour.)
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The type <span class="search-highlight">zemannite</span> (zemtype) single crystal, viewed from above. Note the hi...

The type zemannite (zemtype) single crystal, viewed from above. Note the hi...

Published: 01 May 2019
Fig. 2 The type zemannite (zemtype) single crystal, viewed from above. Note the highly defined crystal facets. The long axis of the crystal (top left to bottom right) is 0.223 mm long (M25933, Royal Ontario Museum).
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The bridging role of the longer Te 4+ –O bonds in <span class="search-highlight">zemannite</span>. Two secondary ...

The bridging role of the longer Te 4+ –O bonds in zemannite. Two secondary ...

Published: 01 May 2019
Fig. 6 The bridging role of the longer Te 4+ –O bonds in zemannite. Two secondary bonds are formed to the dimer hosting O1 in the Te–O1 bond and one secondary bond is formed to each of the two other neighbouring dimers.
Journal Article

The new mineral tomiolloite, Al 12 (Te 4+ O 3 ) 5 [(SO 3 ) 0.5 (SO 4 ) 0.5 ](OH) 24 : A unique microporous tellurite structure

Owen P. Missen, Stuart J. Mills, Michael S. Rumsey, John Spratt, Jens Najorka, Anthony R. Kampf, Brent Thorne
Published: 01 December 2022
American Mineralogist (2022) 107 (12): 2167–2175.
DOI: https://doi.org/10.2138/am-2022-8368
... , and Z = 2. Tomiolloite has a unique microporous framework structure, which bears a slight similarity to that of zemannite, but it has a much larger cavity diameter (8.85 Å). The framework is built from edge-sharing M φ 6 octahedra ( M = Al 3+ and Te 6+ ), Te 4+ O 3 trigonal pyramids, and Te 4+ O 4...
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Graph showing the composition variation of Fe and Zn in the zemsyn crystals...

Graph showing the composition variation of Fe and Zn in the zemsyn crystals...

Published: 01 May 2019
Fig. 1 Graph showing the composition variation of Fe and Zn in the zemsyn crystals by EMPA. This graph may be viewed left to right for increasing Fe and right to left for increasing Zn. The region within the vertical black lines indicate the compositional range for the mineral zemannite.
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The Te 4+ O 7 unit in <span class="search-highlight">zemannite</span>. The Te atom is in dark green and the oxyg...

The Te 4+ O 7 unit in zemannite. The Te atom is in dark green and the oxyg...

Published: 01 May 2019
Fig. 5 The Te 4+ O 7 unit in zemannite. The Te atom is in dark green and the oxygen atoms in red. The three primary bonds forming the trigonal pyramidal arrangement are marked in black and are on the right hand side of the diagram. The longer secondary bonds are in grey.