plural -s
: a mineral consisting of a hydrous phosphate of manganese that is brownish yellow in color, is usually in minute crystals and tufts of fibers, and is found with hureaulite in several pegmatites

Word History


Stewart mine, Pala, California, where it was originally found + English -ite

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Dictionary Entries Near stewartite

Cite this Entry

“Stewartite.” Dictionary, Merriam-Webster, Accessed 23 Jun. 2024.

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