Definition of colemanite
: a colorless or white mineral consisting of a hydrous calcium borate occurring in monoclinic crystals
Origin of colemanite
William T. Coleman †1893 American businessman and mine owner
First Known Use: 1884
Learn More about colemanite
Britannica.com: Encyclopedia article about "colemanite"
Seen and Heard
What made you want to look up colemanite? Please tell us where you read or heard it (including the quote, if possible).