Alberta Slip Clay

Alberta Slip Albany slip substitute Alternate Names: Archie Bray Slip Oxide Analysis Formula CaO 5.90% 0.382 MgO 3.90% 0.352 K2O 3.50% 0.135 Na2O 2.20% 0.129 P2O5 0.10% 0.003 TiO2 0.30% 0.014 Al2O3 15.20% 0.541 SiO2 53.54% 3.236 ...

Alumina Hydrate

Alumina Hydrate Formula: Al2O3.3H2OAlternate Names: Alum Hydrate, Alumina Trihydrate, Hydrated Alumina, Alpha Aluminum Trihydroxide, Gibbsite Oxide Analysis Formula Al2O3 65.39% 1.000 LOI 34.61 Oxide Weight 102.00 Formula Weight 155.99 ...

Alumina Oxide (325 mesh) - weighed out

Alumina (properly called aluminum oxide) powder as used in ceramics can be a white granular material (like table salt) or an exceptionally fine silky white and dense powder (depending on the type and processing method). There are three general types of...

Barium Carbonate

Formula: BaCO3Alternate Names: Barium Carb, Witherite Oxide Analysis Formula BaO 77.66% 1.000 CO2 22.34 Oxide Weight 153.30 Formula Weight 197.40 If this formula is not unified correctly please contact us.  DENS -...

Barnard/Blackbird Slip (SUBSTITUTE)

This is a blend of minerals that closely simulates Barnard (Blackbird) Clay, a widely used clay that contains iron and manganese. Typical analysis: SiO2 30.37% Fe2O3 26.27% Al2O3 20.52% MnO 8.72% K2O 1.68% CaO 0.59% MgO 1.07% TiO2 1...

Bentonite

200 mesh Western Bentonite Available by the pound or in full bag quantities for best pricing. The full bag from the mine is a 50# bag; brown bag, blue text Volclay, Bentonite   Western Bentonite (sodium bentonite) is most frequently...

Borax - Granular

Borax Decahydrate is the refined form of natural sodium borate. Composed of boric oxide (B2O3), sodium oxide, and water, it is a mild, alkaline salt, white and crystalline, with excellent buffering and fluxing properties. Borax...

Boric Acid

Boric acid is a crystalline water soluble boron mineral. It is white in appearance and can be used as granules or as a powder. Both forms are stable under normal conditions, free-flowing, and easily handled by means of air or mechanical conveying. In...

Calcium Carbonate (Whiting)

Calcium Carbonate (whiting) is a carbonate of lime. CaCo3. A stable and insoluable (in water) compound of calcium which is used to introduce the oxide calcia (CaO) into clay bodies and glazes. Calcium Carbonate is the chemical name. The potter's...

CMC Gum

Powdered gum can be very difficult to disperse in water thus it is difficult to add it to an existing liquid batch. However if gum powder is mixed with other dry ingredients before adding them to the water it can be done (often 0.5-1.5%). A much more...

Cornwall Stone

Also known as: Pegmatite. Graven. Gowen. Manx stone. Meldon stone. Growan. Petuntse. Amakusa.Cornwall stone is a low iron feldspar material used primarily as a flux in clay bodies and glazes. Is mined in the Cornwall area of the UK. It melts...

Di-Calcium Bone Ash (typically for raku)

Real bone ash (natural, di-calcium bone ash) is obtained by calcining bone up to approximately 1100°C and then cooling and milling. This material is still manufactured today since some of its important properties are due to the unique cellular...

Dolomite (325 mesh)

A mineral CaCO3MgCO3 Dolomite is mainly used in stoneware glazes (temperatures about 1175&176;C or 2174&176;F). There are other suitable sources of calcia, but insoluble magnesia is less common. Dolomite acts as a flux but, if used to replace...

Gerstley Borate

Gerstley Borate is no longer being mined, the amount that we have in stock is the last of what is avaliable to us. Gillespie Borate is the substitute for this Gerstley Borate, when we run out we will NO LONGER HAVE ANY TO SELL. No common natural material...

Gillespie Borate

Gerstley Borate Substitute

Kiln Wash

This kiln wash is suitable to protect your shelves in any firing UP TO Cone 10. Kiln wash is applied to kiln shelves to protect them from glaze drips. On a washed shelf, drips can be easily removed without gouging or marring the kiln shelf. This kiln...

Lithium Carbonate

Lithium Carbonate is the best source of lithium oxide for glazes. It is slightly soluble. It is unusual to see more than 5% lithium carbonate in glaze. Because of the low expansion of Li2O, high lithium glazes tend to shiver.

Macaloid

Magnesium Carb Light - weighed out

A white very light-weight powder (and bag of this material is like a bag of feathers). It is practically insoluble in water. This is not the same material as magnesium carbonate (magnesite). MagCarb is very refractory, it does not decompose and...

Manganese Carbonate

Used to create metallic, black, brown, or purple/plum glazes. Decomposes on heating to MnO2 and CO2; must be fired above 1080℃ to break down the MnO2 to MnO. A source of manganese in glazes. Occurs naturally as the mineral Rhodochrosite.

Nepheline Syenite A200 (200 mesh)

Nepheline Syenite is an anhydrous sodium potassium alumino silicate. Although feldspar-like in its chemistry, mineralogically it is an igneous rock combination of nepheline, microcline, albite and minor minerals.... Nepheline syenite contributes high...

Petalite

Petalite is a lithium aluminum silicate mineral (more simply a lithium feldspar) that is commonly used in clay bodies. It is valuable because it provides an insoluble source of lithium (lithium carbonate is soluble) and has the highest Li2O:Al2O3 ratio...

Potassium Carbonate (Pearl Ash) - weighed out

This is the only material in ceramics that can deliver K2O in the exact amount required without bringing other oxides with it, however it is water soluble. The most common source of K2O in glazes is feldspar and normally all of the oxides that feldspar...

Precipitated Calcium Carbonate

High quality precipitated Calcium Carbonate   Available by the pound or in full bag quantities for best pricing

PV Clay (Plastic Vitrox)

The original 50# bag is light tan and says PRO-TECH (no markings to identify that it's PV Clay or Plastic Vitrox)

Pyrotrol (Pyrophyllite)

  The Pyrotrol group of mineral products offers a controlled blend of milled Andalusite/Pyrophyllite ores designed to control strinkage in whiteware ceramic applications. Pyrotrol reduces thermal expansion, stabilizes shrinkage, widens firing range...

Ravenscrag Slip Clay - weighed out

This material is not typical of any other glaze material currently available. It is a conditioned clay. The base material, which comprises the bulk of the recipe, is a silty clay that couples very good suspension and drying properties with a low firing...

Soda Ash (Sodium Carbonate)

Also known as Sodium Carbonate. The soda ash that the ceramic industry knows is a refined fine granular white material. It is very pure (99%). Grades (light, natural and dense) differ in particle size and therefore bulk density but they have the same...

Spodumene

Substitute for Spodumene. A source of lithia, which is a flux, that helps to develop copper blue tone glazes. Can replace feldspar and also reduces the vitrification temperature and shrinkage rate in glazes. Why did the price of Spodumene skyrocket?We...

Strontium Carbonate

The 'Ceramic Industry Materials Handbook' states that it starts to disassociate as early as 800C in a purely oxidizing atmosphere, whereas a CO2 atmosphere might delay break-down until around 1220C. This information is supported by the fact...

Talc (AMTAL C-92 Texas)

PLEASE NOTE THAT THIS PRODUCT IS NO LONGER BEING MINED.  This is a Texas talc with a rounded rather than platy shaped particle. Formerly known as Milwhite. American Talc purchased the Milwhite talc mill and the talc assets of Zemex Minerals Group...

Tri-Calcium Bone Ash

Bone ash is TriCalcium Phosphate in the form of Hydroxyapatite Ca5(OH)(PO4)3. This reacts when making bone china to give Anorthite (CaAl2Si2O8) and Ca3(PO4)2.2*Ca5(OH)(PO4)3 --> 3*Ca3(PO4)2 + Ca(OH)2Real bone ash is obtained by calcining bone up to...

Veegum-T

Veegum, or VeeGum T (or VGT) is not a 'gum', rather it is a refined fine particle mineral called 'smectite' (bentonite and hectorite are members of the smectite group). It is a complex colloidal and extremely plastic and sticky magnesium aluminum...

Volcanic Ash (Pumice)

Pumicite is composed of minute particles of volcanic glass. It is easily processed due to its fine in nature. Deposits result from volcanic eruption blowing large quantities of material into the air which settles in layers, sometimes in thicknesses that...

Wollastonite

A white nonmetallic, natural mineral identified chemically as calcium metasilicate, CaSiO3. It is the only commercially available pure white mineral that is wholly acicular (needle-like crystals). Wollastonite is available in fine particle size powders...