...Maria Wierzbicka-Wieczorek; Uwe Kolitsch; Ekkehart Tillmanns Abstract Five new mixed-framework trisilicates were synthesised using a high-temperature flux growth technique. Colourless, glassy plates of SrY 2 Si 3 O 10 crystallise in space group P 1̅, with a = 6.757(1), b = 6.885(1), c = 9.273(2) Å...

...–O bond lengths is 0.002A. The crystal structure of rosenhahnite consists of Ca(1)O 7 , Ca(2)O 6 , and Ca(3)O 7 polyhedra and insular [Si 3 O 8 (OH) 2 ] groups. The trisilicate group with point symmetry 1 consists of a central SiO 4 tetrahedron sharing corners with two adjacent SiO 3 (OH) tetrahedra...

...%. Pavlovskyite represents a 1:1 member of a polysomatic series with calcio-olivine γ-Ca 2 SiO 4 and kilchoanite Ca 6 (SiO 4 )(Si 3 O 10 ) as end-member modules. The structure is characterized by strongly folded trisilicate units (Si 3 O 10 ) interwoven with a framework of CaO 6 and CaO 8 polyhedra. Olivine-like...

...François Farges; Ralf Siewert; Gordon E. Brown, Jr.; Anne Guesdon; Guillaume Morin Abstract The coordination chemistry of molybdenum was investigated in nine series of synthetic silicate glasses, including sodium disilicate (NS2), sodium trisilicate (NS3), albite (Ab), anorthite (An), Ab 50 An 50...

...François FARGES; Stéphanie ROSSANO Abstract The local environment of ∼ 1400 ppm Zr in hydrous synthetic glasses (sodium trisilicate and albitic) has been probed at the Zr K-edge by X-ray Absorption Fine Structure (XAFS) spectroscopy and compared to that for natural glasses (volcanic and tektites...

... are bridged by disilicate (Si 2 O 7 ) and trisilicate (Si 3 O 10 ) groups, yielding a framework. Cavities within this framework contain two large cation sites. The structure of demagistrisite can be considered transitional between the structures of orientite and noelbensonite. Demagistrisite is named in honor...

... in the ratio 2:1 and is isotypic with (NH 4 )Cd 6 (P 2 O 7 ) 2 (P 3 O 10 ). Its framework topology is characterised by one horseshoe-shaped trisilicate (Si 3 O 10 ) group, two symmetrically equivalent (Si 2 O 7 ) groups with the Si–O–Si angle of 165.3° and staggered conformation, and zigzag chains of edge...

... = 83.977(2), β = 88.074(2), γ = 87.846(2)°, V = 755.8 Å 3 , and D x = 6.830 g/cm 3 . The type-L structure comprises linear trisilicate [Si 3 O 10 ] 8− and orthosilicate [SiO 4 ] 4− ions cross linked by REE 3+ in one sevenfold and five eightfold coordinated positions (to 3.0 Å), and is assembled from...

... and environmental interest, including sodium trisilicate glass and an aqueous chloride solution, at the Mo K and Au L III edges, respectively. Further studies based on CCWT phase terms are underway, in order to quantitatively characterize anharmonic information from EXAFS contributions. * E-mail: munoz...

... feature is the presence of an arsenatotrisilicate ion (AsSi 3 O 12 OH) 8− , comprising four tetrahedra linked together to form a chain fragment. This new ion is an extension of the trisilicate (Si 3 O 10 ) 8− ion with an additional As-centered tetrahedron linked to it. This example is the first of a new...

... ): Synthesis and structural study of five new trisilicates, BaREE 2 Si 3 O 10 (REE = Gd, Er, Yb, Sc) and SrY 2 Si 3 O 10 , including a review on the geometry of the Si 3 O 10 unit. Eur. J. Mineral. , 22 , 245 –258. Yang, H., Konzett, J., Prewitt, C.T. ( 2001 ): Crystal structure of phase X, a high...