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americanite

noun, sometimes capitalized
amer·​i·​can·​ite
plural -s

Definition of americanite 

: a glassy meteoritic mineral found in a large area of western South America

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First Known Use of americanite

1946, in the meaning defined above

History and Etymology for americanite

American entry 2 + -ite

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The first known use of americanite was in 1946

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