Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Hexiong Yang"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 2, Pp 234-237 (2015)
The crystal structure of tetrawickmanite, ideally Mn2+Sn4+(OH)6 [manganese(II) tin(IV) hexahydroxide], has been determined based on single-crystal X-ray diffraction data collected from a natural sample from Långban, Sweden. Tetrawickmanite belongs t
Externí odkaz:
https://doaj.org/article/d729f2ebd7fd49fd825d432539916d19
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 3, Pp i16-i17 (2014)
Calcioferrite, ideally Ca4MgFe3+4(PO4)6(OH)4·12H2O (tetracalcium magnesium tetrairon(III) hexakis-phosphate tetrahydroxide dodecahydrate), is a member of the calcioferrite group of hydrated calcium phosphate minerals with the general formula Ca4AB4(
Externí odkaz:
https://doaj.org/article/2301e60d92834cfc92256256f887c5ac
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 7, Pp i41-i41 (2013)
The crystal structure of katayamalite, ideally KLi3Ca7Ti2(SiO3)12(OH)2 (potassium trilithium heptacalcium dititanium dodecasilicate dihydroxide), was previously reported in triclinic symmetry (C-1), with isotropic displacement parameters for all atom
Externí odkaz:
https://doaj.org/article/afda47194fbb492fa1a974bb258efc25
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 2, Pp i4-i5 (2013)
The bjarebyite group of minerals, characterized by the general formula BaX2Y2(PO4)3(OH)3, with X = Mg, Fe2+ or Mn2+, and Y = Al or Fe3+, includes five members: bjarebyite BaMn2+2Al2(PO4)3(OH)3, johntomaite BaFe2+2Fe3+2(PO4)3(OH)3, kulanite BaFe2+2Al2
Externí odkaz:
https://doaj.org/article/b59080c6fcff46a2ae8327462541318d
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 10, Pp i78-i79 (2012)
Clinobarylite, ideally BaBe2Si2O7 (chemical name barium diberyllium disilicate), is a sorosilicate mineral and dimorphic with barylite. It belongs to a group of compounds characterized by the general formula BaM2+2Si2O7, with M2+ = Be, Mg, Fe, Mn, Zn
Externí odkaz:
https://doaj.org/article/603c16c2e9e54a699b5d1c18ab3dac6e
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 10, Pp i73-i73 (2012)
The crystal structure of the mineral junitoite, ideally CaZn2Si2O7·H2O (calcium dizinc disilicate monohydrate), was first determined by Hamilton & Finney [Mineral. Mag. (1985), 49, 91–95] based on the space group Ama2, yielding a reliability facto
Externí odkaz:
https://doaj.org/article/31b2ecb2afaf41f0b1d7b6da2d67b7aa
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 8, Pp i64-i65 (2012)
Nioboaeschynite-(Ce), ideally Ce(NbTi)O6 [cerium(III) niobium(V) titanium(IV) hexaoxide; refined formula of the natural sample is Ca0.25Ce0.79(Nb1.14Ti0.86)O6], belongs to the aeschynite mineral group which is characterized by the general formula AB2
Externí odkaz:
https://doaj.org/article/13b848df23d44c50b293b1cc70a6c5d3
Autor:
Aba C. Persiano, Luiz A.D. Menezes Filho, Hexiong Yang, Mário L. S. C. Chaves, Robert T. Downs
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 5, Pp i27-i28 (2012)
Lithiotantite (lithium tritantalum octaoxide) and lithiowodginite are natural dimorphs of LiTa3O8, corresponding to the laboratory-synthesized L-LiTa3O8 (low-temperature form) and M-LiTa3O8 (intermediate-temperature form) phases, respectively. Based
Externí odkaz:
https://doaj.org/article/e9bd8be1c60a4b1ca289dd9f6dce2472
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 2, Pp i12-i13 (2012)
The crystal structure of kovdorskite, ideally Mg2PO4(OH)·3H2O (dimagnesium phosphate hydroxide trihydrate), was reported previously with isotropic displacement paramaters only and without H-atom positions [Ovchinnikov et al. (1980). Dokl. Akad. Nauk
Externí odkaz:
https://doaj.org/article/947197346d2442138ad98d2525c0a9a9
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 2, Pp i18-i18 (2012)
The title compound, (sodium magnesium) [magnesium iron(III) silicon] disilicate, (Na0.97Mg0.03)(Mg0.43Fe0.173+Si0.40)Si2O6, is isotypic with ordered P2/n omphacite. Its structure is characterized by single chains of corner-sharing SiO4 tetrahedra, ex
Externí odkaz:
https://doaj.org/article/5c4939e0583f4c9e91c0f950060d222c