Calcioferrite with composition (Ca3.94Sr0.06)Mg1.01(Fe2.93Al1.07)(PO4)6(OH)4·12H2O.

ABSTRACT: Calcioferrite, ideally Ca4MgFe(3+) 4(PO4)6(OH)4·12H2O (tetra-calcium magnesium tetrairon(III) hexakis-phosphate tetra-hydroxide dodeca-hydrate), is a member of the calcioferrite group of hydrated calcium phosphate minerals with the general formula Ca4 AB 4(PO4)6(OH)4·12H2O, where A = Mg, Fe(2+), Mn(2+) and B = Al, Fe(3+). Calcioferrite and the other three known members of the group, montgomeryite (A = Mg, B = Al), kingsmountite (A = Fe(2+), B = Al), and zodacite (A = Mn(2+), B = Fe(3+)), usually occur as very small crystals, making their structure refinements by conventional single-crystal X-ray diffraction challenging. This study presents the first structure determination of calcioferrite with composition (Ca3.94Sr0.06)Mg1.01(Fe2.93Al1.07)(PO4)6(OH)4·12H2O based on single-crystal X-ray di

SUBMITTER: Lafuente B 

PROVIDER: S-EPMC3998495 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature