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Crystal structure refinement of a sepiolite/indigo Maya Blue pigment using molecular modelling and synchrotron diffraction
sepiolite indigo Maya Blue pigment molecular mechanics Rietveld method
2011/11/7
Maya Blue is an artificial pigment used in Pre-Columbian America, renowned for its chemical stability. The pigment can be considered a precursor of modern inclusion compounds as a hosting microporous ...
The Crystal Structure and Chemistry of Several Palygorskite Samples with Different Geneses
Palygorskite Crystal Structure
2011/11/4
The structure, chemical composition, and properties of palygorskites from several deposits in the Russian Federation, Ukraine, Uzbekistan, and Slovakia have been investigated by transmission electron ...
Crystal structure refinement of palygorskite from neutron powder diffraction
palygorskite structure neutron powder refinement zeolitic water clay mineral
2011/11/4
Palygorskite is a Mg-rich fibrous clay, present in nature as a mixture of two intricately intertwined polymorphs –monoclinic (C2/m) and orthorhombic (Pbmn) –characterized by the presence of channels a...
Refinement of the Crystal Structure of Cronstedtite-1T
Cronstedtite Layer Silicate Order-Disorder (OD) Polytypism X-ray Diffraction
2011/12/6
Abstract: The crystal structure of cronstedtite-1T was refined in space group P31m, using two crystals: a triangular tabular crystal from Herja, Romania and a conical crystal from Lostwithiel, Cornwal...
Destinezite (“Diadochite”), Fe2(PO4)(SO4)(OH).6H2O: Its Crystal Structure and Role as a Soil Mineral at Alum Cave Bluff, Tennessee
Crystal Structure Destinezite Diadochite Phosphate-Sulphate Soil Mineral
2011/12/2
Abstract: A new occurrence of destinezite (diadochite), ideally Fe2(PO4)(SO4)(OH)·6H2O, is described from Alum Cave Bluff, Great Smoky Mountains National Park, Tennessee, where it occurs in soil and i...
Bederite, a new pegmatite phosphate mineral from Nevados de Palermo, Argentina: Description and crystal structure
Bederite new pegmatite phosphate mineral Nevados de Palermo Argentina Description crystal structure
2012/4/1
Bederite, ideally Ca Mn Fe Mn (PO ) (H O) , orthorhombic, a = 12.559(2), b = 12.834(1), c= 11.714(2) ?, V = 1887.8(4) ?
, Z = 4, space group Pcab, is a new mineral from the El Pe?(R)AE
pegmatite, Ne...
Crystal structure of kanemite, NaHSi2O5·3H2O, from the Aris phonolite, Namibia
single-crystal X-ray diffraction kanemite NaHSi2O5·3H2O
2012/3/31
Kanemite was studied by single-crystal X-ray diffraction. The mineral, ideally NaHSi O °§3 O,2 5 2
is orthorhombic (space group Pbcn); unit-cell parameters are a = 4.946(3), b = 20.502(15), c = 7.275...
The synthesis and crystal structure of CaAlFSiO4, the Al-F analog of titanite
synthesis and crystal structure Al-F analog titanite CaAlFSiO4
2012/3/31
Aluminum-rich titanites [Ca(Ti,Al)(O,F)SiO ] with X > 0.53 [X = Al/(Al+Ti)], including the
pure end-member CaAlFSiOwere synthesized for the first time in a high-pressure experimental
was determined...
Incommensurate modulation and the crystal structure of ganophyllite
crystal structure ganophyllite selected-area electron diffraction
2012/3/31
Incommensurate modulation in ganophyllite crystals was investigated with selected-area electron
diffraction (SAED), high-resolution transmission electron microscopy (HRTEM), analytical elec-
tron mi...
Crystal structure of boralsilite and its relation to a family of boroaluminosilicates, sillimanite, and andalusite
boralsilite boroaluminosilicates sillimanite andalusite
2012/3/31
Boralsilite, Al B Si O , is monoclinic, space group C2/m, with a = 14.767(1), b = 5.574(1), c =
15.079(1) ?, ? = 91.96(1)?, and Z = 2. The structure was solved with direct methods and refined to an
...
Toward the crystal structure of nagyagite, [Pb(Pb,Sb)S2] [(Au,Te)]
crystal structure of nagyagite [Pb(Pb,Sb)S2] [(Au,Te)]
2012/3/31
Synthetic nagyagite was grown from a melt as part of a search for materials with high-tempera-
ture superconductivity. Electron microprobe analyses of synthetic nagyagite and of nagyagite from
the t...
Single-crystal structure refinement of synthetic M4K-substituted potassic richterite K(KCa)Mg5Si8O22(OH)2
Single-crystal structure refinement M4 potassic richterite
2012/3/31
The crystal structure of a potassic richterite, K(KCa)Mg Si O (OH) synthesized at 15 GPa and
1400 ?C, was refined from single-crystal X-ray diffraction data. The unit-cell parameters are: a =
10.192...
Gillulyite Tl2(As,Sb)8S13: Reinterpretation of the crystal structure and order-disorder phenomena
Tl2(As,Sb)8S13:crystal structure order-disorder phenomena slabs
2012/3/31
ThecrystalstructureofgillulyiteTl (As,Sb) S wasreinterpretedbasedontheaverage
structuredeterminedbyFoitetal.(1995).ItconsistsofalternatingPbS-likeslabscom-
prisedofAs-SpolyhedraandTl-bearingslabswit...
Rossmanite [](LiAl2)Al6(Si6O18)(BO3)3(OH)4, a new alkali-deficient tourmaline: Description and crystal structure
Rossmanite [](LiAl2)Al6(Si6O18)(BO3)3(OH)4 alkali-deficient tourmaline crystal structure
2012/4/1
Rossmanite is a new tourmaline species from near Rozˇna´, western Moravia, Czech Republic. It forms pale pink columnar crystals about 25 mm long and 5 mm thick, elon-gated along c with striation...
Synthesis, crystal structure, and phase relations of AlSiO3OH, a high-pressure hydrous phase
Synthesis crystal structure phase relations of AlSiO3OH high-pressure hydrous phase
2012/4/1
Phase egg, first described by Eggleton et al. (1978), was synthesized and its composition determined to be AlSiO3OH. The crystal structure of AlSiO3OH, including the position of the hydrogen, has been...