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siwaqaite

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Journal Article

Siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O, a new mineral of the ettringite group from the pyrometamorphic Daba-Siwaqa complex, Jordan Available to Purchase

Rafał Juroszek, Biljana Krüger, Irina Galuskina, Hannes Krüger, Yevgeny Vapnik, Evgeny Galuskin
Published: 01 March 2020
American Mineralogist (2020) 105 (3): 409–421.
DOI: https://doi.org/10.2138/am-2020-7208
...Rafał Juroszek; Biljana Krüger; Irina Galuskina; Hannes Krüger; Yevgeny Vapnik; Evgeny Galuskin Abstract A new mineral, siwaqaite, ideally Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O [ P 31 c , Z = 2, a = 11.3640(2) Å, c = 21.4485(2) Å, V = 2398.78(9) Å 3 ], a member of the ettringite group...
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Spurrite marble specimen with thin veins and cavities filled by siwaqaite (a). Cavity containing hexagonal, prismatic siwaqaite crystals, and siwaqaite-calcite aggregates along the edge of the cavity (b). (Color online.)

Spurrite marble specimen with thin veins and cavities filled by siwaqaite (... Available to Purchase

Published: 01 March 2020
Figure 2. Spurrite marble specimen with thin veins and cavities filled by siwaqaite ( a ). Cavity containing hexagonal, prismatic siwaqaite crystals, and siwaqaite-calcite aggregates along the edge of the cavity ( b ). (Color online.)
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FTIR spectrum of siwaqaite.

FTIR spectrum of siwaqaite. Available to Purchase

Published: 01 March 2020
Figure 5. FTIR spectrum of siwaqaite.
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Raman spectrum of siwaqaite. (Color online.)

Raman spectrum of siwaqaite. (Color online.) Available to Purchase

Published: 01 March 2020
Figure 4. Raman spectrum of siwaqaite. (Color online.)
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EDS spectrum and backscattered electron (BSE) image of siwaqaite.

EDS spectrum and backscattered electron (BSE) image of siwaqaite. Available to Purchase

Published: 01 March 2020
Figure 3. EDS spectrum and backscattered electron (BSE) image of siwaqaite.
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Crystal structure of siwaqaite: projection along [001] (a) and [110] (b). Ca atoms are green, Al(OH)6 octahedra are depicted in blue, (CrO4)2– tetrahedra in brown, and (SO3)2– triangle in yellow. Oxygen and hydrogen atoms are shown as marine and gray spheres, respectively. (Color online.)

Crystal structure of siwaqaite: projection along [001] ( a ) and [110] ( b ... Available to Purchase

Published: 01 March 2020
Figure 6. Crystal structure of siwaqaite: projection along [001] ( a ) and [110] ( b ). Ca atoms are green, Al(OH) 6 octahedra are depicted in blue, (CrO 4 ) 2– tetrahedra in brown, and (SO 3 ) 2– triangle in yellow. Oxygen and hydrogen atoms are shown as marine and gray spheres, respectively
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Geological scheme of the Middle East with localization of the pyrometamorphic Mottled Zone complexes along the Israel-West Bank-Jordan borders (left, modified after Techer et al. 2006) and siwaqaite type locality in North Siwaqa complex (right)—a pit wall of spurriteapatite rocks with veins filled by low-temperature mineralization. (Color online.)

Geological scheme of the Middle East with localization of the pyrometamorph... Available to Purchase

Published: 01 March 2020
Figure 1. Geological scheme of the Middle East with localization of the pyrometamorphic Mottled Zone complexes along the Israel-West Bank-Jordan borders (left, modified after Techer et al. 2006 ) and siwaqaite type locality in North Siwaqa complex (right)—a pit wall of spurriteapatite rocks
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(a) The configuration of (CrO4)2–, (SO4)2–, (SeO4)2–, and (SO3)2– anion groups in the channels of the siwaqaite structure along [001]. (b) Projection of three tetrahedra T1, T2, T3, and (SO3)2– group on “T4” sites normal to [001], with positional disorder defined by splitting of O atoms. T1 = (CrO4)2–/(SeO4)2–/(SO4)2–; T2 = (CrO4)2–/(SO4)2–; T3 = (CrO4)2–/(SO4)2–/(SeO4)2–; T4 = (SO3)2–. (Color online.)

( a ) The configuration of (CrO 4 ) 2– , (SO 4 ) 2– , (SeO 4 ) 2– , and (SO... Available to Purchase

Published: 01 March 2020
Figure 7. ( a ) The configuration of (CrO 4 ) 2– , (SO 4 ) 2– , (SeO 4 ) 2– , and (SO 3 ) 2– anion groups in the channels of the siwaqaite structure along [001]. ( b ) Projection of three tetrahedra T1, T2, T3, and (SO 3 ) 2– group on “T4” sites normal to [001], with positional disorder defined
Journal Article

New minerals and nomenclature modifications approved in 2019 Available to Purchase

Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, Stuart J. Mills
Published: 01 April 2019
Mineralogical Magazine (2019) 83 (2): 315–317.
DOI: https://doi.org/10.1180/mgm.2019.23
... , 315–317. IMA No. 2018-150 Siwaqaite Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O North Siwaqa complex, Lisdan-Siwaqa Fault, Hatrurim Complex, ca. 60 km S of Amman, Jordan (31°24’15”N, 36°14’34”E) Rafał Juroszek*, Biljana Krüger, Irina O. Galuskina, Hannes Krüger, Yevgeny Vapnik...
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IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 48 New minerals and nomenclature modifications approved in 2019 Open Access

Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, Stuart J. Mills
Published: 01 March 2019
European Journal of Mineralogy (2019) 31 (2): 399–402.
DOI: https://doi.org/10.1127/ejm/2019/0031-2852
... Full authorship of proposal E-mail address of corresponding author IMA No. 2018-150 Siwaqaite Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O North Siwaqa complex, Lisdan-Siwaqa Fault, Hatrurim Complex, ca. 60 km S of Amman, Jordan (31°24′15″N, 36°14′34″E) Rafał Juroszek*, Biljana Krüger...
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New minerals and nomenclature modifications approved in 2019 Available to Purchase

Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, Stuart J. Mills
Published: 01 June 2019
Mineralogical Magazine (2019) 83 (3): 479–483.
DOI: https://doi.org/10.1180/mgm.2019.35
.... and Armellino, G. (2019) Aluminosugilite, IMA 2018-142. CNMNC Newsletter No. 49: Mineralogical Magazine , 83 , doi:10.1180/mgm.2019.35. IMA No. 2018-150 Siwaqaite Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O North Siwaqa complex, Lisdan-Siwaqa Fault, Hatrurim Complex, ca. 60 km S of Amman, Jordan...
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IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) NEWSLETTER 49 New minerals and nomenclature modifications approved in 2019 Open Access

Ritsuro Miyawaki, Frédéric Hatert, Marco Pasero, Stuart J. Mills
Published: 01 May 2019
European Journal of Mineralogy (2019) 31 (3): 653–658.
DOI: https://doi.org/10.1127/ejm/2019/0031-2861
.... and Armellino, G. (2019) Aluminosugilite, IMA 2018-142. CNMNC Newsletter No. 49; Eur. J. Mineral ., 31 , https://doi.org/10.1127/ejm/2019/0031-2861 IMA No. 2018-150 Siwaqaite Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O North Siwaqa complex, Lisdan-Siwaqa Fault, Hatrurim Complex, ca. 60 km S...
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Journal Article

Mcconnellite, CuCrO 2 and ellinaite, CaCr 2 O 4 , from varicoloured spurrite marble of the Daba-Siwaqa area, Hatrurim Complex, Jordan Available to Purchase

Irina O. Galuskina, Marcin Stachowicz, Krzysztof Woźniak, Yevgeny Vapnik, Evgeny Galuskin
Published: 17 March 2021
Mineralogical Magazine (2021) 85 (3): 387–397.
DOI: https://doi.org/10.1180/mgm.2021.27
... et al. , 2014 , 2017 ; Juroszek et al. , 2018a ). Low-temperature hydrothermally altered products of chromium-bearing pyrometamorphic rocks contain minerals of the hashemite–baryte and bentorite–ettringite–siwaqaite series (Seryotkin et al. , 2019 ; Juroszek et al., 2018b , 2020a , 2020b...
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View PDF for article title, Mcconnellite, CuCrO 2 and ellinaite, CaCr 2 O 4 , from varicoloured spurrite marble of the Daba-Siwaqa area, Hatrurim Complex, Jordan
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Journal Article

Crocobelonite, Ca Fe 2 3 + (PO 4 ) 2 O, a new oxyphosphate mineral, the product of pyrolytic oxidation of natural phosphides Available to Purchase

Sergey N. Britvin, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Natalia S. Vlasenko, Oleg S. Vereshchagin, Yevgeny Vapnik, Vladimir N. Bocharov
Published: 01 October 2023
American Mineralogist (2023) 108 (10): 1973–1983.
DOI: https://doi.org/10.2138/am-2022-8757
... ( Sharygin et al. 2021 ; Galuskina et al. 2021a ), along with chromates—chromatite CaCrO 4 ( Eckhardt and Heimbach 1963 ), hashemite BaCrO 4 ( Hauff et al. 1983 ), and siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O ( Juroszek et al. 2020 ). Selenium is being incorporated into selenides (Se 2– ) ( Sokol...
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Journal Article

Evanichite, Pb 6 Cr 3+ (Cr 6+ O 4 ) 2 (SO 4 )(OH) 7 FCl, from Tiger, Arizona, USA, the First Mineral Containing Both Cr 3+ and Cr 6+ Available to Purchase

Hexiong Yang, Ronald B. Gibbs, Francis X. Sousa, Robert T. Downs
Published: 07 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (2): 419–429.
DOI: https://doi.org/10.3749/2200068
...), and Ca 6 Al 2 (SO 4 ) 3 (OH) 12 ·27H 2 O (ettringite) – Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O (siwaqaite). This may explain why there are chromate-phosphate, chromate-arsenate, chromate-vanadate, and chromate-silicate minerals ( Table 8 ), but no chromate-sulfate mineral or synthetic compound had been...
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View PDF for article title, Evanichite, Pb 6 Cr 3+ (Cr 6+ O 4 ) 2 (SO 4 )(OH) 7 FCl, from Tiger, Arizona, USA, the First Mineral Containing Both Cr 3+ and Cr 6+
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Journal Article

Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2 O, a new ettringite-group mineral from the Fuka mine, Okayama Prefecture, Japan Available to Purchase

Inna Lykova, Nikita V. Chukanov, Igor V. Pekov, Vasiliy O. Yapaskurt, Leonid A. Pautov, Vladimir Yu. Karpenko, Dmitry I. Belakovskiy, Dmitry A. Varlamov, Sergey N. Britvin, Katharina S. Scheidl
Published: 24 November 2020
The Canadian Mineralogist (2020) 58 (5): 653–662.
DOI: https://doi.org/10.3749/canmin.2000030
...., Galuskina, I., Krüger, H., Vapnik, Y., & Galuskin, E. (2020) Siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O, a new mineral of the ettringite group from...
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View PDF for article title, Chiyokoite, Ca 3 Si(CO 3 )[B(OH) 4 ]O(OH) 5 ·12H 2 O, a new ettringite-group mineral from the Fuka mine, Okayama Prefecture, Japan
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Journal Article

Immobilisation of chromium in magnesium carbonate minerals Open Access

Alicja M. Lacinska, Keith Bateman, Simon Chenery, Simon J Kemp, Thomas Liddy, Jeremy C Rushton, Dipankar Saha, Sven L.M. Schroeder
Published: 01 April 2024
Mineralogical Magazine (2024) 88 (2): 162–169.
DOI: https://doi.org/10.1180/mgm.2023.91
.... and Galuskin E. ( 2020 ) Siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ×26H 2 O, a new mineral of the ettringite group from the pyrometamorphic Daba-siwaqa complex, Jordan . American Mineralogist , 105 , 409 – 421 . Kelemen...
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Hanswilkeite, KFeS 2 , a new peralkaline sulfide mineral Available to Purchase

Sergey N. Britvin, Mikhail N. Murashko, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin, Yevgeny Vapnik, Natalia S. Vlasenko, Yulia S. Shelukhina, Vladimir N. Bocharov
Published: 01 June 2025
American Mineralogist (2025) 110 (6): 956–965.
DOI: https://doi.org/10.2138/am-2024-9494
.... , Galuskina , I. , Krüger , H. , Vapnik , Ye. . , and Galuskin , E. ( 2020 ) Siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O, a new mineral of the ettringite group from the pyrometamorphic Daba-Siwaqa complex, Jordan . American Mineralogist , 105 , 409 – 421 , https://doi.org/10.2138/am...
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Nickolayite, FeMoP, a new natural molybdenum phosphide Available to Purchase

Mikhail N. Murashko, Sergey N. Britvin, Yevgeny Vapnik, Yury S. Polekhovsky, Vladimir V. Shilovskikh, Anatoly N. Zaitsev, Oleg S. Vereshchagin
Published: 30 May 2022
Mineralogical Magazine (2022) 86 (5): 749–757.
DOI: https://doi.org/10.1180/mgm.2022.52
... , 85 , 1082 – 1086 . Juroszek R. , Krüger B. , Galuskina I. , Krüger H. , Vapnik Ye. and Galuskin E. ( 2020 ) Siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ⋅26H 2 O, a new mineral of the ettringite group from the pyrometamorphic Daba-Siwaqa complex, Jordan . American...
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Discovery of terrestrial allabogdanite (Fe,Ni) 2 P, and the effect of Ni and Mo substitution on the barringerite-allabogdanite high-pressure transition Available to Purchase

Sergey N. Britvin, Oleg S. Vereshchagin, Vladimir V. Shilovskikh, Maria G. Krzhizhanovskaya, Liudmila A. Gorelova, Natalia S. Vlasenko, Anna S. Pakhomova, Anatoly N. Zaitsev, Andrey A. Zolotarev, Maxim Bykov, Maksim S. Lozhkin, Fabrizio Nestola
Published: 01 June 2021
American Mineralogist (2021) 106 (6): 944–952.
DOI: https://doi.org/10.2138/am-2021-7621
.... , Galuskina , I. , Krüger , H. , Vapnik , Ye. , and Galuskin , E. ( 2020 ) Siwaqaite, Ca 6 Al 2 (CrO 4 ) 3 (OH) 12 ·26H 2 O, a new mineral of the ettringite group from the pyrometamorphic Daba-Siwaqa complex, Jordan . American Mineralogist 105 , 409 – 421 . Kim , Y.-H. , Ming...
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