from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Another name for ozarkite, a mineral native to the United States.
from the GNU version of the Collaborative International Dictionary of English
- n. A zeolitic mineral, occurring generally in masses of a radiated structure. It is a hydrous silicate of aluminia, lime, and soda. Called also mesole, and comptonite.
from The Century Dictionary and Cyclopedia
- n. A mineral of the zeolite family, occurring generally in masses of a radiated structure, in spherical concretions or compact. It is a hydrous silicate of aluminium, calcium, and sodium.
Sorry, no etymologies found.
Some gems, such as the chlorastrolite, thomsonite, and agates of Lake Superior, are gathered on beaches, where they have fallen from rock which has gradually disintegrated by weathering and wave action.