alkali feldspar

noun

Definition of alkali feldspar

: feldspar containing alkali metals (such as sodium or potassium or both) but little calcium

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First Known Use of alkali feldspar

1873, in the meaning defined above

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The first known use of alkali feldspar was in 1873

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Cite this Entry

“Alkali feldspar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alkali%20feldspar. Accessed 1 Oct. 2020.

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