Acasta Greiss (Oldest known rock on earth)


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SIZE: 15-25mm (Average)

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Type: Acasta Greiss (Oldest known rock on earth)
Age: 3.6 – 4 billion years old
Location Found: Northwest Territories, Canada

The Acasta Gneiss is a tonalite gneiss in the Slave craton in the Northwest Territories, Canada. The rock body is exposed on an island about 300 kilometres north of Yellowknife. The rock of the outcrop was metamorphosed 3.58 to 4.031 billion years ago and is the oldest known intact crustal fragment on Earth.

MAY DIFFER TO PHOTOThe image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size approximately within the size range indicated. It will not be the same specimen shown in the photo, the colours, shape, size and style may vary as with any natural item. To guarantee the specimen you receive will be representative by that in photo, we would always recommend the Actual as seen version of this item.

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(May differ to photo)


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