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Aluminum and Lead Content in Pyrophyllite Clay

Questions are frequently asked about whether heavy metals exist in pyrophyllite clay. Rest assured the forms and quantity of minerals in this clay are not classified as "heavy metals". The forms they exist in are not only non-toxic to the human body and to soils, they are exceptionally beneficial to both.

The questions usually focus around the subject of aluminum and lead. The following science on the presence of aluminum and lead will help to answer these questions:

From a research paper from the University of Denver in a section entitled "Silica and Clay"

http://www.du.edu/~jcalvert/phys/silicon.htm

"When a felsic rock weathers, water leaches out the potassium and sodium of the feldspars, which crumble into a soft phyllosilicate called clay, containing mainly aluminum, silicon and oxygen. The flakiness of clay minerals are the reason for the fissility of shales. Where for some reason they have not become aligned in layers, the result is nonfissile mudstone. The crystals of silica are little affected by weathering, and remain as loose sand. Mixed with organic matter, humus, the result is soil in which plants can grow. Long weathering in humid tropical or semitropical areas may even leach out the silica, leaving only ferric and aluminum hydroxides, which are even more insoluble. This poor, reddish soil devoid of most nutrients is called laterite from its resemblance to brick clay (which, of course, it is not). Bauxite, the ore of aluminum, is a lateritic deposit consisting mainly of aluminum hydroxide. When basaltic rock weathers, the equivalent of clay is greenish chlorite, also a flaky mineral.

"As our example of a clay, let's take the valuable kaolin, a pure form of clay that forms a slippery white mud, named after its original source in China. It is composed of six-membered rings of silica tetrahedrons, rendered electrically neutral by Al+++ and OH- ions strategically arranged. Its formula may be written Al2Si2O5(OH)4, or Al(OH)3·HAlSi2O6, or even Al4Si4O10(OH)8, which shows the Si to O ratio of 4 to 10 typical of the phyllosilicates. A "hydrated aluminum silicate" is a good description. It is, at any rate, a layered silicate like the micas."

Written by the Faculty of Science - University of Waterloo on Aluminum Silicates:

http://www.science.uwaterloo.ca/~cchieh/cact/applychem/alsilicate.html

"Alumina, Al2O3, and silica, SiO2, are two most abundant minerals of the earth crust. The class of minerals containing aluminum oxide and silicon oxide is called aluminum silicates.

"Many minerals contain aluminum and silicon oxides. For example, three minerals andalusite, sillimanite, and kayanite all have the same chemical composition of Al2O(SIO4). Topaz is closely related in chemical composition, Al2O(SIO4)(OH,F)2."

"What are aluminosilicates?
"Inorganic Chemistry by Swaddle calls the group of minerals aluminosilicate when some of the Si4+ ions in silicates are replaced by Al3+ ions. For each Si4+ ion replaced by an Al3+, the charge must be balanced by having other positive ions such as Na+, K+, and Ca2+ ions. Feldspar group and zeolites are typical aluminosilicates by this definition.

"The alkali ions are held in place to balance the charges due to the presence of Al3+ ions instead of Si4+ ions. The Al3+ ions seem replace Si4+ ions in the chains of corner shared tetrahedra of SiO4 groups.

"However, the bonding between Al and Si can be different. Silicon atoms or ion tend to be bonded to 4 oxygen atoms in a tetrahedral fashion, but aluminum ions tend to be bonded to 6 oxygen atoms in an octahedral fashion."

A note about the use of Kaolin clay and aluminosilicates to treat upset stomach medically.

Here is some research on Kaolin clay and its 39.8% alumina which is currently being used in the medical profession to treat upset stomach (see the last sentence).

Sacred Healing Clay is composed of approximately 85% pyrophyllite clay and 15% a combination of montmorillonite, kaolin and chlorite clays.

http://www.chemicalland21.com/industrialchem/inorganic/KAOLIN.htm

"Kaolin is any of a group of fine clay minerals with the chemical composition of Al2O3·2SiO2·2H2O which means two-layer crystal (silicon-oxygen tetrahedral layer joined to alumina octahedral layer) exist alternately. Clay minerals include kaolinite, nacrite, dickite, montmorillonite, illite, chlorite, attapulgite and anauxite. Chemical compositions of kaolin minerals are same. But each differs from by layers stacked on top of one another. Kaolinite is the principal constituent of kaolin. Its chemical structure is Al2Si2O5(OH)4 (theoretically 39.8% alumina + 46.3% silica + 13.9%) but elements are not diverted from this ideal composition. Kaolinite is a hydrous aluminum silicate prepared by the chemical weathering of feldspar and decomposition of aluminum silicate rocks. It is a soft, earthy and white mineral bur is colored light orange to red by iron oxide. kaolin minerals long have been the basic raw materials used in the ceramic industry, especially in fine porcelains. They can be easily molded, have a fine texture, and are white though fired. Large quantities of them are used also in paper coating, filler, paint, plastics, fiberglass, catalysts, and other specialty applications. They are the main component of blue pigment called ultramarine Blue (sodium aluminosilicate containing sulphur) which is prepared by heating kaolin, sodium carbonate, sulfur and other inexpensive ingredients together. It features heat and alkali resistance. They are used to treat upset stomach medically and as an ingredient pesticide useful to replace organic pesticides."

Pyrophyllite Clay in Agriculture

Pyrophyllite clay is an aluminum silicate of the sheet type. In the realm of agriculture, the sheet silicon clays produce the best results. Several types of silicate clays exist naturally including aluminum silicates, magnesium silicates, sodium silicates, calcium silicates and potassium silicates.

The most effective of the group of silicates for agricultural purposes are the aluminum silicates. Aluminum silicates promote the strengthening of the plant stalks and overall constitution, along with the reduction of insects and funguses. Aluminum silicates play a role in the production of silicic acid in the soil (when combined with water), resulting in an increase in the plant's mineral uptake, thereby increasing trace minerals and other nutrients in produce. Pyrophyllite clay improves pH buffering, and greatly supports the proliferation of beneficial microbial populations in the growing medium.

Safe Levels of Lead

The followings excerpts were taken from an EPA document entitled:

Regulations and Guidelines Applicable to Lead and Lead Compounds

"FDA has reviewed several direct human food ingredients (i.e., food dyes) and has determined them to be "generally recognized as safe" when used in accordance with current good manufacturing practices. Some of these ingredients contain allowable lead concentrations that range from 0.1 to 10 ppm."

"For soils, an average concentration of 400 ppm/yard was the proposed standard at which the public should be made aware of the risk associated with exposure to lead (EPA 1998b)"

"Bare soil in rest of yard - 1,200 ppm average."

Sacred Healing Clay has been tested at 10 ppm of lead, which, in combination with 62+ other natural minerals and trace elements, all of which balance each other out, making them even safer and more beneficial to consume. I am personally confident that Sacred Healing Clay is not only safe, but quite beneficial to consume. Having consumed this clay now for almost 2 years, I can say that I have observed that my health and sense of well being has only improved during this time.

For further information feel free to contact me by phone or .

Michael King

Heart Balance Herbal Rejuvenation

1428 Windsor St, Ashland, OR 97520

541-482-9633

Purchase Products

For specific insights into the healing powers of Sacred Healing Clay (a select, more refined grade of Crater Lake Pyrophyllite Clay) prepared for human use and consumption go to: Health & Nutrition.