Abstract
Denisovite is a rare mineral occurring as aggregates of fibres typically 200-500 nm diameter. It was confirmed as a new mineral in 1984, but important facts about its chemical formula, lattice parameters, symmetry and structure have remained incompletely known since then. Recently obtained results from studies using microprobe analysis, X-ray powder diffraction (XRPD), electron crystallography, modelling and Rietveld refinement will be reported. The electron crystallography methods include transmission electron microscopy (TEM), selected-area electron diffraction (SAED), high-angle annular dark-field imaging (HAADF), high-resolution transmission electron microscopy (HRTEM), precession electron diffraction (PED) and electron diffraction tomography (EDT). A structural model of denisovite was developed from HAADF images and later completed on the basis of quasi-kinematic EDT data by ab initio structure solution using direct methods and least-squares refinement. The model was confirmed by Rietveld refinement. The lattice parameters are a = 31.024 (1), b = 19.554 (1) and c = 7.1441 (5) Å, β = 95.99 (3)°, V = 4310.1 (5) Å(3) and space group P12/a1. The structure consists of three topologically distinct dreier silicate chains, viz. tw...Continue Reading
References
Jan 20, 2007·Ultramicroscopy·U KolbD Hubert
Jan 30, 2007·Ultramicroscopy·A AvilovP Fischione
Feb 20, 2008·Ultramicroscopy·U KolbM T Otten
Mar 10, 2009·Ultramicroscopy·E MugnaioliU Kolb
Mar 12, 2009·Chemical Communications : Chem Comm·Lynne B McCusker, Christian Baerlocher
Aug 16, 2012·Acta Crystallographica. Section A, Foundations of Crystallography·Sebastian SchlittUte Kolb
Mar 29, 2014·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Rangana WarshamanageHans Beat Bürgi
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Jan 23, 2015·IUCrJ·Carlos Basílio Pinheiro, Artem M Abakumov
Apr 2, 2015·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Lukáš Palatinus
Apr 2, 2015·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Dmitry BatukJoke Hadermann
Apr 14, 2015·IUCrJ·Yifeng YunWei Wan
May 23, 2015·IUCrJ·Quan Hao
Feb 13, 2016·IUCrJ·Ross E WhitfieldT Richard Welberry
Apr 7, 2016·Acta Crystallographica. Section D, Structural Biology·Blaine H M Mooers
Dec 3, 2016·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Carolyn Pratt Brock
Citations
Jan 18, 2020·IUCrJ·Andrey A ZolotarevElena Sokolova
Aug 25, 2020·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Sergey V Krivovichev
Aug 25, 2020·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Arianna E LanzaWerner H Paar
Aug 25, 2020·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Ute KolbSergi Plana-Ruiz
Aug 25, 2020·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Mauro Gemmi, Arianna E Lanza
Aug 25, 2020·Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials·Enrico Mugnaioli, Tatiana E Gorelik
May 18, 2017·IUCrJ·C Richard A Catlow
Mar 15, 2019·IUCrJ·Arianna LanzaMauro Gemmi
Jun 19, 2019·Angewandte Chemie·Iryna AndrusenkoMauro Gemmi
Feb 20, 2020·Structural Dynamics·Brent L Nannenga
Nov 20, 2020·IUCrJ·Enrico MugnaioliMiguel Gregorkiewitz
Jan 26, 2021·Frontiers in Molecular Biosciences·Patrick R GleasonJeremy H Mills
Feb 24, 2018·Inorganic Chemistry·Gwladys SteciukPhilippe Boullay
Sep 5, 2019·ACS Central Science·Mauro GemmiJan Pieter Abrahams
Dec 13, 2019·Inorganic Chemistry·Roman KaiukovLiberato Manna
Nov 2, 2017·Accounts of Chemical Research·Jian Li, Junliang Sun
Oct 2, 2020·ACS Central Science·Enrico MugnaioliMauro Gemmi
Aug 1, 2018·Inorganic Chemistry·Enrico MugnaioliLiberato Manna