Zircon - an overview | ScienceDirect Topics
Peter Mullinger, Barrie Jenkins, in Industrial and Process Furnaces (Second Edition), 2013. Zircon and Zirconia Refractories. Zircon is a naturally occurring material, ZiSiO 4, and is found in heavy mineral deposits such as illmanite, rutile, monazite and garnet as river or beach sands.High-grade zircon melts at about 2190 °C, softens between 1600 °C and 1800 °C and is volume stable up