Keywords: A-quartz.png a-quartz red atoms are oxygens English Wikipedia en File A-quartz png 2009-12-15 Materialscientist en English wikipedia Materialscientist cite journal Journal of Applied Physics 1982 53 6751-6756 Crystal structure and thermal expansion of a-quartz SiO2 at low temperature Lager G A Jorgensen J D Rotella F J Quartz diagrams and drawings |