Serendibite, a complicated, new, inorganic crystal structure.

Content Provider	Semantic Scholar
Author	Bürger, Marina Venkatakrishnan, V.
Copyright Year	1974
Abstract	Serendibite with very similar analyses is known from Ceylon and New York. The triclinic cell of symmetry P[unk] and volume 670.9 A(3) contains 2Ca(1.64)Mg(2.64)Fe(0.27) (II)Al(4.64)B(1.66)Si(3)O(20), with 14 metal atoms and 20 oxygen atoms in the asymmetric unit. It was solved by the "direct" method of transforming the ordinary three-dimensional Patterson function into an approximation of the electron density by using conjugate peaks and minimum functions, followed by successive Fourier syntheses and least-squares refinement to R = 7.1%. This new structure is composed of interrupted brucite-type layers which form an octahedral framework, and winged single chains of tetrahedra. The structure has units of similar, but not identical, geometry to those of the minerals sapphirine and aenigmatite, and these similar units are assembled in a different way.
Starting Page	047204
Ending Page	047204
Page Count	1
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.pnas.org/content/71/11/4348.full.pdf
PubMed reference number	16592193v1
Volume Number	71
Issue Number	11
Journal	Proceedings of the National Academy of Sciences of the United States of America
Language	English
Access Restriction	Open
Subject Keyword	Brucite Immunostimulating conjugate (antigen) Minerals Oxygen anatomical layer
Content Type	Text
Resource Type	Article