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  • 22-03-2020
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why is opal found in places such as australia

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luvpandora360
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  • 22-03-2020

Answer:

The opal is the National Gemstone of Australia. The opal is almost exclusively located within Cretaceous sedimentary rocks of the Great Artesian Basin, Intense weathering resulted in extensive silicification at relatively shallow levels within the Tertiary regolith.

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