Bentonite - A processed clay material composed principally of the mineral montmorillonite. It has a great affinity for fresh water and when hydrated will increase its volume more than seven times. Water/bentoninte suspensions are essentially impermeable.
A type of clay used as a clarifying or fining agent for the protein stabilization of wine. It is mined mainly in Wyoming in the USA and if it is used correctly, it has no effect on the bouquet and flavour of the wine.
Very fine clay used to heat stabilize and clarify a wine. To use it, boil a small amount of water, add the bentonite and stir until dissolved. Then allow to cool slightly. Lastly, add the mixture to the wine and allow to set for several day. The bentonite will cling to particles and help clear the wine.
A soft, plastic, porous, light-colored rock composed essentially of clay minerals of the montmorillonite (smectite) group plus colloidal silica, and produced by devitrification and accompanying chemical alteration of a glassy igneous material, usually a tuff or volcanic ash.
mineral-derived Obtained from volcanic ash, bentonite clay is highly absorptive. It is in our Clay Mask to help draw impurities from the skin by absorbing excess dirt and oil. It also is a natural thickener for the product.
An aluminum-silicate clay originally found around Fort Benton, Wyoming, Bentonite is commonly used to fine white wines and, to a lesser degree, red wines. The negative charge associated with Bentonite attracts a variety of suspended solids in wine causing them to precipitate which typically results in a more clear and stable wine with reduced off odors and flavors. Prior to addition, Bentonite should be hydrated with a small amount of warm water. The wine should be racked off the finings within two weeks of addition.
A highly plastic clay originating in the decomposition of volcanic ash. Up to 2% can be added to all bodies to improve plasticity. Up to 3% can be added to glazes and engobes to help keep them in suspension. It is best to add the bentonite to the water and mix thoroughly before adding it to the batch.
a purified natural clay that is used in fining white wines for the purpose of correcting heat instability. When stirred into a white wine, the Bentonite particles quickly glom onto the larger molecules of protein in the wine, collecting them as the Bentonite settles to the bottom of the wine tank. Later, the act of removing the Bentonite from the tank by racking or filtration removes the excessive protein from the wine. It was these larger proteins in the wine that had caused heat instability, so Bentonite treatment corrects the original heat instability of the wine. Bentonite is never used for red wines because the red pigments of wine tend to stick to the Bentonite also. Heavy Bentonite use in red wine would effectively destroy the red color of the wine. richardgrantwine.com
This white, moisture-absorbing clay is skin-softening and will help exfoliate and draw out oils and impurities from the skin. Used in blemish masks, bentonite is reported to draw toxins out of the skin.
A widely distributed, peculiar type of clay which is considered to be the result of devitrification and chemical alteration of the glassy particles of volcanic ash or tuff. Used in a foundry to bond sand.
A porous clay that expands to many times its dry volume as it absorbs water. Bentonite is commonly found in many cosmetic foundations and may clog pores and suffocate the skin. Bentonite is used by fire fighters to suffocate forest fires by eliminating the oxygen available.
(also known as Kaolin): Also known as "china clay". Generally, these clays are used in facial masks to absorb excess facial oil. Although, it can dry-out the skin if used too often, and in some cases it may even clog the pores.
Bentonite is an absorbent aluminium phyllosilicate generally impure clay consisting mostly of montmorillonite, (Na,Ca)0.33(Al,Mg)2Si4O10(OH)2Â·(H2O)n. Two types exist: swelling bentonite which is also called sodium bentonite and non-swelling bentonite or calcium bentonite. It forms from weathering of volcanic ash, most often in the presence of water.