Name:
Alcheleringa narnina
Age: Precambrian
Formation: Tumbiana Formation
Location: Bea Bea Creek, Pilbara, Western Australia
Size: Plate is over 5 inches across
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This is a very interesting stromatolite slab from the Precambrian of Australia. Authorities believe that stromatolites were formed by masses of green or blue-green algae, or ''cyanobacteria''. This striking slab has been highly polished on one side for optimal display. The unique pattern of the stromatolite is beautifully showcased, and the different shades of the mineral replacement are quite noticeable. This is a very distinct example of this very uncommon stromatolite from Down Under.
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