petalite

[pet-l-ahyt]
noun
  1. a mineral, lithium aluminum silicate, Li(AlSi4O10), occurring in colorless or white foliated masses: an important source of lithium.

Origin of petalite

From the German word Petalit, dating back to 1800–10. See petal, -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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Historical Examples of petalite