Kaolin
or KAOLINITE, a mineral element found in granite, and generally arising from the decomposition of the felspar. It is essentially a hydrated silicate of alumina. After being levigated, it is extensively used in the manufacture of porcelain, and is hence called China clay. The name kaolinite was applied by Johnson and Blake to a soft powder made up of minute, transparent, pearly scales, which is always present in greater or lesser quantity in all kaolin.
KARACHI (-rächē), a district of Sind, India, bounded on the W. by Baluchistan, on the S. by the Arabian sea, on the E. by the Indus; area 14,115 square miles; pop. about 600,000. Also a seaport and the chief city of Sind, on Karachi Bay; annexed by the British in 1843; foreign trade amounted in 1898- 1899 to 12,896,636 tens of rupees; pop. about 175,000.
KARADSCHA. See PHOCAEA.