Zircon Image

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Zircon

Mineral:

Zircon: ZrSiO4

Comments:

Cathodoluminescence image of earth's oldest-known mineral (zircon grain - W74/2-36) with inset concordia plot showing the 4,404 billion year old region. Note the oscillatory zoning in the outer rim. Image by John W. Valley.

Location:

Interlayered red quartzites and metaconglomerates, Jack Hills, Western Australia.

Scale:

See Image.

Copyright:

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