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Juroszek, Rafał, Krüger, Biljana, Galuskina, Irina, Krüger, Hannes, Vapnik, Yevgeny, Galuskin, Evgeny (2020) Siwaqaite, Ca6Al2(CrO4)3(OH)12·26H2O, a new mineral of the ettringite group from the pyrometamorphic Daba-Siwaqa complex, Jordan. American Mineralogist, 105 (3) 409-421 doi:10.2138/am-2020-7208 Journal (article/letter/editorial)
occurs with calcite and minerals of the baryte-hashemite series. It forms hexagonal prismatic crystals...the Hatrurim Complex: hashemite, BaCrO4, which forms a solid solution with baryte, and chromatite, CaCrO4...ettringite group from pyrometamorphic rocks of Nabi Musa, West Bank, reaches 0.36 atom per formula unit (apfu)...e– “chromate-ettringite” triple solid-solution series (Drebushchak et al. 2013). Ettringite is an important...following lines and standards: CrKa = Cr2O3; SKa = baryte; SiKa, CaKa = diopside; AlKa = orthoclase; SeLa
Juroszek, Rafał, Krüger, Biljana, Galuskina, Irina, Krüger, Hannes, Tribus, Martina, Kürsten, Christian (2019) Raman Spectroscopy and Single-Crystal High-Temperature Investigations of Bentorite, Ca6Cr2(SO4)3(OH)12·26H2O. Minerals, 10 (1) 38 doi:10.3390/min10010038 Journal (article/letter/editorial)
a few works concerning the ettringite-bentorite series. At the Ma’ale Adummim locality, hexagonal prismatic...corresponds to the ettringite-bentorite solid solution series up to a Cr end-member content of 60% [3]. Furthermore...samples. Accessory minerals were represented by baryte, gibbsite, hydrocalumite, sphalerite, and pyrite...ettringite-bentorite series were also identified at Ma’ale Adummim locality in the territory of Palestine. This location...silicate hydrates, and minerals of the baryte-hashemite series form the low temperature hydrothermal assemblages