 | Acta Crystallographica Section B Acta Crystallographica Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS |
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![[Figure 1]](dk5046fig1mag.jpg)
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Figure 1
The unit cell of the plagioclase average crystal structure refined in the space group C1. An [100] overview is shown in (a) with the slab of disordered M1 and M2 sites highlighted with a green background. Isosurfaces of the Fourier electron density distribution around the M1 and M2 sites (0.43 < y < 0.57) are shown down the (b) [100] and (c) [010] directions. Non-spherical electron density features appear for the M1 and M2 sites. The irregular elongated electron density shapes are most clear when viewed down the [010] direction. Ca/Na atoms are shown in blue, Si/Al centered tetrahedra in grey and O atoms in red. |
![[Figure 1]](dk5046fig1.jpg)
| STRUCTURAL SCIENCE CRYSTAL ENGINEERING MATERIALS |
ISSN: 2052-5206
