AVL. Sounds like a significant discovery. ONly 41% of earths'...

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    AVL. Sounds like a significant discovery. ONly 41% of earths' crust.

    Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals that make up about 41% of the Earth's continental crust by weight.
 
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