feldspar has been researched along with anorthite* in 1 studies
1 other study(ies) available for feldspar and anorthite
| Article | Year |
|---|---|
Incommensurate density modulation in a Na-rich plagioclase feldspar: Z-contrast imaging and single-crystal X-ray diffraction study.
Plagioclase feldspars are the most abundant mineral in the Earth's crust. Intermediate plagioclase feldspars commonly display incommensurately modulated or aperiodic structures. Z-contrast images show both Ca-Na ordering and density modulation. The local structure of lamellae domains has I1-like symmetry. The neighboring lamellae domains are in an inversion twinning relationship. With a state-of-the-art X-ray diffraction unit, second-order satellite reflections (f-reflections) are observed for the first time in andesine (An Topics: Aluminum Compounds; Aluminum Silicates; Crystallography, X-Ray; Microscopy, Electron, Transmission; Models, Molecular; Phase Transition; Potassium Compounds; Silicates; Sodium | 2016 |