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Name:
Acaella australica
Age: Precambrian
Formation: Bitter Springs Formation
Location: Alice Springs, NT, Australia
Size: Stromatolite is 7.2 inches across!
This specimen is not for sale
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Here is a very interesting stromatolite from the Precambrian of Australia. Authorities believe that stromatolites were formed by masses of green or blue-green algae, or ''cyanobacteria''. This stromatolite is estimated to be about 2 billion years old! These closely packed stromatolites are believed to have been deposited in conditions that subjected them to intermittent periods of submergence, possibly seasonal in nature. This chunk of stromatolite has been sliced with a diamond saw and highly polished on one side for optimal display. The cellular pattern of the stromatolites is easily seen, and the different colors of mineral replacement are nicely showcased. This is a very distinct stromatolite specimen from an unusual location.
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