| 1. | In 1999, Wilde extracted more zircons from the 1984 rocks.
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| 2. | Heat treatment also imparts greater brittleness to zircon and characteristic inclusions.
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| 3. | Apatite, ilmenite, magnetite and zircon can also be found.
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| 4. | Traces of garnet, zircon, topaz, and tourmaline occur.
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| 5. | Zircon crystals are also some of the most incompressible silicate minerals.
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| 6. | Zircons are formed at high temperatures, from melted rocks.
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| 7. | Because of their uranium and thorium content, some zircons undergo metamictization.
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| 8. | Associated minerals include zircon, aegirine, apatite, perovskite and columbite.
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| 9. | Apatite, zircon and magnetite are practically always present as accessory minerals.
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| 10. | The dating method is usually performed on the mineral zircon.
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