ball clay
See also: ballclay
English
Etymology
Clay of this kind found in Dorset and Devon, England, used to be cut into balls that weighed 30 pounds.
Noun
ball clay (usually uncountable, plural ball clays)
- A type of clay that commonly consists of 20-80% kaolinite, 10-25% mica, and 6-65% quartz.
References
- Krueger, Dennis (December 1982). "Why On Earth Do They Call It Throwing?" Studio Potter Vol. 11, Number 1. (etymology)