K
Kerrite

An obsolete term for a local variety name of vermiculite.

Killinite

An obsolete term for illite.

Kiln, rotary

A furnace having an inclined rotating tube which is heated either directly (a flame or heater within the furnace) or indirectly (inductively from outside). Rotary kilns are often used in industrial applications to achieve dynamic heating of raw materials to form reactive components, such as metaclay or clinker for Portland cement. The temperature and the dwell time can typically be set in each furnace segment, the latter by installing shovels or by changing the inclination or the rotational speed of the tube.
Cf., metaclays, clinker

Kimolite

An obsolete term for a kaolin, but probably a mixture, described from Kimolos, Greece.
Syn. cimolite, pelikanite (from Kiev, Russia, also obsolete)

Kinetics
Kinoshitalite

A trioctahedral member of the brittle mica group. The end-member formula is: BaMg3Al2Si2O10(OH)2. Typical site substitutions include: Ba > K; Mn2+, Mn3+, Al, Fe, Ti for Mg; and F for OH. Kinoshitalite forms 1M and, less commonly, 2M1 polytypes. In general, kinoshitalite occurs in metamorphic deposits in amphibolite- to granulite-facies, in marbles and calc-silicate rocks, and in kimberlites (group I) and in volcanic rocks that are K undersaturated.
Cf., ferrokinoshitalite

Klementite

An obsolete term for chamosite (chlorite).

Kmaite

An obsolete term for celadonite, ferrian celadonite.

Kotschubeite

An obsolete term for a Cr-containing chlorite from the Ural mountains.

Kryptotile

A poorly defined material, probably not a mica.