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Zircons contain trace amounts of uranium and thorium (from 10 ppm up to 1 wt%) and can be dated using several modern analytical techniques.

Because zircons can survive geologic processes like erosion, transport, even high-grade metamorphism, they contain a rich and varied record of geological processes.

Currently, zircons are typically dated by uranium-lead (U-Pb), fission-track, cathodoluminescence, and U Th/He techniques.

For instance, imaging the cathodoluminescence emission from fast electrons can be used as a prescreening tool for high-resolution secondary-ion-mass spectrometry (SIMS) to image the zonation pattern and identify regions of interest for isotope analysis.

Color in this red or pink series is annealed in geological conditions above temperatures of around 400°C.), one of the most refractory materials known.

Other applications include use in refractories and foundry casting and a growing array of specialty applications as zirconia and zirconium chemicals, including in nuclear fuel rods, catalytic fuel converters and in water and air purification systems.

In geological settings, the development of pink, red, and purple zircon occurs after hundreds of millions of years, if the crystal has sufficient trace elements to produce color centers.

Zircon is a common accessory to trace mineral constituent of most granite and felsic igneous rocks.

Due to its hardness, durability and chemical inertness, zircon persists in sedimentary deposits and is a common constituent of most sands.

This is done using an integrated cathodoluminescence and scanning electron microscope.

Zircons in sedimentary rock can identify the sediment source.




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