Kaolin or china clay is usually fine, white, and refractory.
Porcelain or china clay, derived from the decomposition of granite rocks.
We failed to trace any legend or folk-lore about china clay.
Years ago there had been a small find of china clay on the headland.
This first discovery of china clay has led to that great development of the industry, of which St. Austell is the centre.
"Fish, tin, and copper," was the old commercial toast; but china clay has come in and taken a front seat.
Now, the clay is easily penetrable, and the original hole probably pierced a bed of china clay.
According to Hickling the product of the action of hydrofluoric acid 'has not the remotest resemblance to china clay.'
On going out of Fowey we passed a number of coasters loaded with china clay, which is found in large quantities near this town.
The china clay of Cornwall is added to the same mixture of flint and felspar, when a finer pottery or porcelain is required.