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Nefedovite, Na5Ca4(PO4)4F: thermal evolution, phase transition and crystal structure refinement
Nefedovite, Na 5 Ca 4 (PO 4 ) 4 F, has been investigated by in situ high-temperature powder (30–690 °C) and single crystal (27–827 °C) X-ray diffraction and...
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Single-crystal X-ray structure refinement of Al-bearing superhydrous phase B
Superhydrous phase B is an important dense hydrous magnesium silicate (DHMS) phase in a hydrous peridotite system for understanding the deep water...
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A crystal structure refinement of uralolite, Ca2Be4(PO4)3(OH)3∙5H2O, from Weinebene, Austria
The crystal structure of uralolite, Ca 2 Be 4 (PO 4 ) 3 (OH) 3 ·5H 2 O, from the spodumene deposit of Weinebene, Carinthia, Austria, has been refined with X-ray...
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The Crystal Structure of a Mineral with the Composition Pd(Bi,Sb)
AbstractA mineral with the composition Pd(Bi 0.53 Sb 0.47 ), intermediate between sobolevskite, ideally PdBi, and sudburyite, PdSb, from the Chineiskii...
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Fluorellestadite from burned coal dumps: crystal structure refinement, vibrational spectroscopy data and thermal behavior
Nine different samples of fluorellestadite from Chelyabinsk, Kizel and Kuznetsk coal basins were studied by single-crystal X-ray diffraction...
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New insights into the crystal chemistry of zemannite: Trigonal rather than hexagonal symmetry due to ordering within the host-guest structure
The microporous crystal structure of zemannite, Mg(H 2 O) 6 [Zn 2+ Fe 3+ (TeO 3 ) 3 ] 2 · n H 2 O, n ≤ 3, was re-investigated based on single-crystal X-ray diffraction...
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Mallestigite, Pb3Sb(SO4)(AsO4)(OH)6·3H2O, from the type locality – new data, crystal structure, and structural relationships
A report of the supergene mineral mallestigite, Pb 3 Sb 5+ (SO 4 )(AsO 4 )(OH) 6 ·3H 2 O, from the type locality Neufinkenstein-Grabanz district, Mallestiger...
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Crystal structure and optical absorption spectra of LiCo(SO4)OH and its remarkable relationship to the Zn-Mn-silicate hodgkinsonite
Crystals of the compound LiCo(SO 4 )OH were synthesised at low-hydrothermal conditions, and the crystal structure was determined and refined from...
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Single-crystal X-ray diffraction and IR-spectroscopy studies of potassium-deficient fluorapophyllite-(K)
Three samples of fluorapophyllite-(K) with different cation composition were studied by the X-ray diffraction and IR-spectroscopy methods. The...
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Iowaite from the Udachnaya Kimberlite Pipe, Yakutia: Crystal Chemistry and Postcrystallization Transformations
AbstractAn atypical variety of iowaite with an extremely low content of divalent cations (Mg + Fe 2+ )/Fe 3+ of ~2.75 : 1 is identified in a late...
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Crystal-Chemical Features of a Cation-Ordered Potassium Analog of Aqualite from the Kovdor Massif (Kola Peninsula)
AbstractThe chemical composition, crystal structure, and characteristics of the Raman spectrum of a highly hydrated aqualite-like mineral of the...
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Concerning the incorporation of potassium in the crystal structure of combeite (Na2Ca2Si3O9)
Potassium incorporation in the structure of combeite has been studied in detail. Since natural combeites are known to contain only small amounts of...
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Cacoxenite—a Complex Phosphate with a Modular Structure
AbstractThe crystal chemical peculiarities of cacoxenite from the Těškov quarry (Bohemia, Czech Republic) are studied using single crystal X-ray...
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On the incorporation of strontium into the crystal structure of bredigite: structural effects and phase transition
Sr-substitution in the crystal structure of bredigite has been studied in detail. Samples of a hypothetical solid-solution series with nominal...
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On the crystal-chemistry of inderite, Mg[B3O3(OH)5](H2O)4·H2O
The crystal chemistry of inderite, a hydrous borate with known ideal formula MgB 3 O 3 (OH) 5 ·5H 2 O from the Kramer deposit, was re-investigated by...
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The crystal structure and redefinition of utahite
Utahite was first described in 1997 based mainly on powder X-ray diffraction data and electron microprobe data. No crystal structure was reported....
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A New Chladniite Variety from Volcanic Exhalations. The Genetic Crystal Chemistry of Chladniite
AbstractA new, unusual, Fe-free, and As 5+ -rich variety of chladniite, a rare phosphate of the fillowite group, was found in exhalations of the...
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On the crystal-chemistry of meyerhofferite, CaB3O3(OH)5·H2O
The crystal structure and crystal chemistry of meyerhofferite, ideally CaB 3 O 3 (OH) 5 ·H 2 O, was investigated by a multi-methodological approach based on...
