Si
Zr
O
K
Ball and Stick
Stick
Spacefill
Polyhedral
https://virtual-museum.soils.wisc.edu/wp-content/uploads/sites/7/2016/08/wadeite_poly1.txt
https://virtual-museum.soils.wisc.edu/wp-content/uploads/sites/7/2016/08/wadeite_poly2.txt
https://virtual-museum.soils.wisc.edu/wp-content/uploads/sites/7/2016/08/wadeite_poly3.txt
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Wadeite
Wadeite is a cyclosilicate having three-membered rings. The 3-membered silica rings are bonded to zirconium (Zr) to form the backbone structure. Potassium (K) is the charge-balancing cation in this instance.
Highlighting Features
Silicon (Si) atoms Zirconium (Zr) atoms Oxygen (O) atoms Potassium (K) atoms Silicate backbone A single 3-membered ring All atomsDistribution
Wadeite can be found in Australia and Russia. It is of rare occurrence, but is a good example of a 3-membered cyclosilicate ring structure.
Swanson, D. K. and C.T. Prewitt. 1983. The crystal structure of K2SiSi3O9. American Mineralogist 68:581-585