Scientists Discover New Forms of Feldspars (IMAGE)
Caption
The crystal structure of the feldspar anorthite under normal conditions (left) and the newly discovered high-pressure variant (right). Under normal conditions, the silicon and aluminium atoms form tetrahedra (yellow and blue) with four oxygen atoms each (red). Under high pressure polyhedra with five and six oxygen atoms are formed. Calcium atoms (grey) lie in between. The black lines outline the so-called unit cell, the smallest unit of a crystal lattice.
Credit
Credit: DESY, Anna Pakhomova
Usage Restrictions
Free use by the media if reporting on the related paper
License
Licensed content