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The use of medicinal clay in folk medicine goes back to prehistoric times. Indigenous peoples around the world still use clay widely, which is related to geophagy. The first recorded use of medicinal clay goes back to ancient Mesopotamia. A wide variety of clays are used for medicinal purposes—primarily for external applications, such as the ...
Family of African Bush Elephants taking a mud bath in Tsavo East National Park, Kenya. Peloid is defined [1] as a mature clay, mud or mud suspension or dispersion with curative or cosmetic properties, consisting of a complex mixture of fine-grained materials of geological and/or biological origin, mineral or sea water, and organic compounds commonly arising from some biological metabolic ...
Medicinal plants are widely used as folk medicine in non-industrialized societies, mainly because they are readily available and cheaper than modern medicines. The annual global export value of the thousands of types of plants with medicinal properties was estimated to be US$60 billion per year and growing at the rate of 6% per annum.
Fuller's earth is the most common spelling today, but both fullers earth and fullers' earth remain in wide use. [4] Fuller's earth is also known by the following other names: Bleaching clay, [5] probably because fulling whitened the cloth. Whitening clay, particularly when used to treat facial pigmentation, such as melasma.
Roman red gloss terra sigillata bowl with relief decoration Terra sigillata beaker with barbotine decoration. Terra sigillata is a term with at least three distinct meanings: as a description of medieval medicinal earth; in archaeology, as a general term for some of the fine red ancient Roman pottery with glossy surface slips made in specific areas of the Roman Empire; and more recently, as a ...
Montmorillonite, a member of the smectite group, is a 2:1 clay, meaning that it has two tetrahedral sheets of silica sandwiching a central octahedral sheet of alumina. The particles are plate-shaped with an average diameter around 1 μm and a thickness of 0.96 nm ; magnification of about 25,000 times, using an electron microscope, is required ...
Moche portrait vessel, Musée du quai Branly, ca. 100—700 CE, 16 x 29 x 22 cm Jane Osti (Cherokee Nation), with her award-winning pottery, 2006. Ceramics of Indigenous peoples of the Americas is an art form with at least a 7500-year history in the Americas. [1]
Because the clay layer is typically covered with topsoil, a location which is vulnerable to a quick clay landslide is usually identifiable only by soil testing, and is rarely obvious to a casual observer. Thus human settlements and transportation links have often been built on or near clay deposits, resulting in a number of notable catastrophes: