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Magnetite from magnetotactic bacteria: Size distributions and twinning
Magnetite magnetotactic bacteria Size distributions twinning
2012/4/1
We studied intracellular magnetite particles produced by several morphological types of magnetotactic bacteria including the spirillar (helical) freshwater species,Magnetospirillum magnetotacticum,and...
Oriented attachment and growth, twinning, polytypism, and formation of metastable phases: Insights from nanocrystalline TiO2
Oriented attachment growth twinning polytypism formation of metastable phases Insights nanocrystalline TiO2
2012/4/1
Atomic-resolution transmission electron micrographs show that nanocrystalline TiO2 coarsens by oriented attachment and growth under hydrothermal conditions. In addition to forming homogeneous single c...
Natural kalsilite, KAlSiO4, with P31c symmetry: Crystal structure and twinning
Natural kalsilite KAlSiO4 P31c symmetry Crystal structure twinning
2012/4/5
AnewKAlSiO polymorphwasfoundinagranulitefaciesgneissfromthePunalur
district,southernIndia.Thestructurewassolvedandre?nedonatwinnedcrystaltoan R
indexvalueof1.98%for265independentre?ections.Metamorph...
Twinning in synthetic anorthite: A transmission electron microscopy investigation
Twinning synthetic anorthite transmission electron microscopy investigation
2012/4/1
Transmission electron microscopy (TEM) has revealed dense, complex twins in synthetic
anorthite crystals formed by annealing CaAl2Si20g glass. The crystals are dominated by
Carlsbad and Carlsbad-alb...
Bottinoite, Ni(H2O)6[Sb(OH)6]2: Crystal structure, twinning, and hydrogen-bond model
Bottinoite Ni(H2O)6[Sb(OH)6]2 Crystal structure twinning hydrogen-bond model
2012/4/9
The crystal structure ofbottinoite, Ni(H20MSb(OH)6L, wasdetermined from a twinned crystal. This study revealed that the strong 31m pseudosymmetry shown by allthe natural and synthetic crystals examine...
Pyrrhotite of composition Fe.889S from Morro Velho, Brazil, is pseudohexagonal. Precession photographs suggest a superstructure with cell dimensions which appear to be two and four times the A and C d...