A ped that can not be divided into smaller peds is a primary ped. Several primary peds may be packed together to form compound peds (referred to as secondary and tertiary peds).
Cf., ped

A pedofeature refers to a unit fabric in a soil that is easily differentiated from the adjacent fabrics by a difference in concentration of a component, such as variations of chemical (e.g., organic, ferric iron, manganese) components, grain-size fraction, or internal fabric. The b-fabrics are commonly not considered as pedofeatures.
See b-fabric, cutan, papule

Production and redistribution (either physical or chemical) of soil plasma during soil formation and development.
See soil plasma

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

A maturated mud or muddy dispersion composed of a mixture of fine-grained material (commonly clay), mineral water (or sea water) and often organic compounds that result from biological metabolic activity, with healing and/or cosmetic properties. Peloids involve a maturation or ageing process, which may occur naturally, although commercially available peloids are often processed for weeks to several years in special ponds, typically containing mineral waters or brines of varying composition. Based on the composition of the fine-grained components, the terms inorganic peloid (phyllo-peloid, sulpho-peloid), organic peloid (organo-peloid), and mixed peloid have been proposed.
Syn., matured mud
See mudtherapy, pelotherapy, peloid maturation.
Cf., ageing.

Various types of peloids have been described:

– natural peloid : a healing mud formed in the natural sedimentary environment and used at the source.
Syn., healing mud

– phyllo-pelloid : an inorganic peloid mostly composed of clay-sized phyllosilicates.

– sulfo-peloid or sulpho-peloid an inorganic peloid mostly composed of sulfur or sulfide minerals.

– organo-peloid a peloid composed primarily of organic-rich materials (e.g. peat).

A process that occurs with the intimate blending of fine-grained materials (commonly clays and/or organic material) with medicinal mineral water or sea water for variable periods of ageing. Biological activity during maturation may play a role in enhancing healing properties and in shortening ageing time. Cation exchange between minerals and water may also occur during maturation, affecting the fluid chemistry, and this may enhance the physical properties (e.g. plasticity) of the suspensions.

Therapies involving the use of peloids (muds or poultices).
Cf., active principle, aesthetic medicine, antibacterial clay, geotherapy, healing clay, medicinal clay, peloid

The Mn-rich trioctahedral member of the chlorite group.
See chlorite

An obsolete varietal term for clinochlore.

A discredited trioctahedral Mg- and Si-rich chlorite, now referred to as clinochlore.
See chlorite