A temperature unit where one K equals 1/273.16 of the thermodynamic temperature of the triple point of pure water, which is the temperature at which ice, water and water vapor can coexist in thermodynamic equilibrium (definition from the 13th Conference of the Générale des Poids et Mesures). 0 K, termed “absolute zero”, is the temperature at which atoms do not thermally vibrate.
Cf., Celsius, Fahrenheit
See magadiite.
A variety of talc, but with H2O either in the interlayer or associated with the broken bonds at the edges of the particles. As a variety of talc, “kerolite” should not be used as a mineral name in a strict sense. Brindley et al. (1977) reported the composition as Mg3Si4O10(OH)2 . nH2O with n = 0.8 – 1.2. Stacking is turbostratic and particle size is < 5 layers. After weeks under ethylene glycol, kerolite swells slightly, whereas talc does not. Kerolite occurs in weathering profiles (Brindley et al., 1977), in palustrine environments (Pozo and Casas, 1999), and in microbial mats in Hawaiin caves (Léveillé et al., 2002), and may be derived from sepiolite (Stoessell, 1988). Older literature may use the spelling of “Cerolite”.
Cf., pimelite, talc
An obsolete term for a local variety name of vermiculite.
An obsolete term for illite.
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
An obsolete term for a kaolin, but probably a mixture, described from Kimolos, Greece.
Syn. cimolite, pelikanite (from Kiev, Russia, also obsolete)
See chemical kinetics.
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
An obsolete term for chamosite (chlorite).