from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A type of rock (hydrous aluminum-silicate) that is native to the Arkansas; also called thomsonite.
- n. The mineral mozarkite of the Missouri, Ozark region.
from The Century Dictionary and Cyclopedia
- n. A massive variety of thomsonite from Magnet Cove in the Ozark Mountains, Arkansas.
First named in print by C.U. Shepard in 1846, named after The Ozarks, Missouri, although it was from the region of Hot Springs, Arkansas. (Wiktionary)
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