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Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Materials |
Muscovite Mica
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Dolowhite
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Volcanic Ash 2
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Gers Borate 9/97
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Gerstley Bor (99)
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Suzorite 325-PE
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Noor Hematite
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Noor Albite
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Noor Talc
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Vicron Whiting
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Marblewhite Whiting
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USAKOS Wollastonite
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KARIBIB Dolomite
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Luzenac Talc 00S
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Talc 2C
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Nyad 325 Wollastonite
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TDM 92 Talc
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Sierralite Talc
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CT-30 Talc
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Texas Talc 92
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Snocal 40
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Turkish Colemanite
A mineral with very high B2O3 and CaO content. |
Materials |
Light Magnesium Carbonate C2FD
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Materials |
Camadil 95 Dolomite
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Materials |
Laguna Borate
A Gerstley Borate substitute that was available during the early 2000s. |
Materials |
ABC Colemanite
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Materials |
Wood Ash
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Materials |
Sylvite
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Materials |
Sodium Fluosilicate
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Materials |
IMCO Borate
A Gerstley Borate substitute that was available during the early 2000s. |
Materials |
Colemanite 38
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Materials |
Disodium Octaborate Tetrahydrate
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Materials |
CGS 3.1 Spodumene
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Materials |
Boric Oxide
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Materials |
Borax Decahydrate
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Materials |
Vapenec Whiting
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Kuncice Dolomite
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Roudnice Talc
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Hydroboracite 30
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Desertalc
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Pfizer Wollastonite
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Sodium Carbonate Heptahydrate
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Lead Monosilicate Frit
A standard frit of 1 molar part of PbO and 1 of SiO2. It melts lower than a lead bisilicate. |
Materials |
Calcium Borate
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Materials |
Arsenic Oxide
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Materials |
Calcium Carbonate E-5-1P
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China Stone O-606aP
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Materials |
Wollastonite S-4
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Materials |
Wollastonite C-901P
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Materials |
Bone Ash Calcined
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Materials |
Cherry Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Amtalc-C98
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Materials |
Spluga Talc
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Materials |
Unimin Potash Feldspar 300#
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Materials |
Synthetic Ash
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Materials |
Rice Husk Ash
A type of plant ash used as an ingredient in pottery glazes. |
Materials |
Kiln Bat Wash W5
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Materials |
Hardwood Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Coal Ash
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Materials |
Talc B-4-33P
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Materials |
Bismuth Subnitrate
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Materials |
Potassium Cryolite
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Anhydrous Sodium Sulfate
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Materials |
Sodium Nitrate
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Materials |
Potasium Nitrate
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Materials |
Hydrated Lime
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Materials |
Sodium Tripolyphosphate
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Materials |
Colemanite AM
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Materials |
Grapevine Ash
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Materials |
Lead Fluoride
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Materials |
Barium Fluoride
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Materials |
Vanadinite
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Materials |
Precipitated Lime
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Materials |
Seriphyl
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Materials |
Quicklime
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Materials |
Zinc Borate
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Materials |
Mount Pinatubo Ash
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Materials |
Ceramelt
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Materials |
Zinc Carbonate
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Materials |
Sodium Fluoride
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Materials |
Cimcoat 325 Talc
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Materials |
Chilean Ulexite
|
Materials |
Ceramitalc No. 1
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Materials |
Ceramitalc HDT
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Materials |
Ceramitalc 10A
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Materials |
Ceramitalc
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Materials |
Caltalc
|
Materials |
Calcium Sulfide
|
Materials |
Colemanite
A natural source of boron that melts at a very low temperature. |
Materials |
Copper Sulfate
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Materials |
Glass Cullet
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Materials |
Glacier 200 Talc
|
Materials |
Gerstley Borate
Gerstley Borate was a natural source of boron for ceramic glazes. It was plastic and melted clear at 1750F. Now we need to replace it. How? |
Materials |
Potassium Fluoride
|
Materials |
Fluorspar
|
Materials |
Eucalyptus Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Dolomite
An inexpensive source of MgO and CaO for ceramic glazes, also a highly refractory material when fired in the absence of reactant fluxes. |
Materials |
Cryolite
|
Materials |
Calcium Silicate
|
Materials |
Calcium Carbonate
In ceramics, calcium carbonate is primarily a source of CaO in raw stoneware and porcelain glazes. |
Materials |
Beryllium Oxide
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Materials |
Barium Sulfate
|
Materials |
Barium Carbonate
A pure source of BaO for ceramic glazes. This is 77% BaO and has an LOI of 23% (lost at CO2 on firing). |
Materials |
Applewood Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Antimonate Of Lead
|
Materials |
Anhydrous Borax
A white, odorless product crystalline granular by dehydrating Borax to remove the crystal bound water. |
Materials |
Amblygonite
|
Materials |
4392 Rosa Blanca
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Materials |
Bone Ash
|
Materials |
Boraq
This Gerstley Borate substitute was available during the early 2000s. Its recipe and development are well documented but two materials are no longer available. |
Materials |
Calcined Dolomite
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Materials |
Cadycal
|
Materials |
Cadmium Sulfide
|
Materials |
Boroflux
|
Materials |
Boric Acid
|
Materials |
Borax Pentahydrate
|
Materials |
Boraq 3
|
Materials |
Boraq 2
|
Materials |
I.T. Talc
|
Materials |
Ilmenite
|
Materials |
Soft Wood Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Sodium Sulfate Decahydrate
|
Materials |
Sodium Carbonate
|
Materials |
Silverline 303 Talc
|
Materials |
Sea Shells
|
Materials |
Rice Straw Ash
A type of plant ash sometimes used as an ingredient in pottery glazes. |
Materials |
Red Lead
|
Materials |
Potassium Nitrate
|
Materials |
Strontium Carbonate
A pure source of SrO for ceramic glazes. It contains 70% SrO and has an LOI of 30% (released as CO2 during firing). |
Materials |
Talc
A source of MgO for ceramic glazes, a flux or thermal expansion additive in clay bodies, also used in the manufacture of cordierite. |
Materials |
Vansil Wollastonite
|
Materials |
Wollastonite
|
Materials |
Potassium Carbonate Trihydrate
|
Materials |
Volcanic Ash
Powdered volcanic ash is used to make ceramic glazes, some varieties have a chemistry similar enough to glaze that high percentages can be employed. |
Materials |
Ulexite
A natural source of boron, it melts at a very low temperature to a clear glass. |
Materials |
Turkish Ulexite
A mineral with very high B2O3 and CaO content. |
Materials |
Texas Talc 286
|
Materials |
Talcron
|
Materials |
Pearl Ash
|
Materials |
Pioneer 2661 Talc
|
Materials |
Limestone
|
Materials |
Lime
|
Materials |
Light Magnesium Carbonate
A refractory feather-light white powder used as a source of MgO and matting agent in ceramic glazes |
Materials |
Lead Sesquisilicate Frit
A standard frit of 1 molar part of PbO and 1.5 of SiO2. It melts lower than a lead bisilicate. |
Materials |
Litharge
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Materials |
Lead Chromate
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Materials |
Lead Carbonate
|
Materials |
Lead Antimonate
|
Materials |
Lithium Carbonate (Foote)
|
Materials |
Lithium Carbonate
A powerful melter very valuable in ceramic glazes. It is 40% Li2O and has an LOI of 60% (lost as CO2 on firing). This material in now incredibly expensive. |
Materials |
Pine Wood Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Pearl Ash Calcined
|
Materials |
Oyster Shells
|
Materials |
Oakwood Ash
A type of wood ash used as an ingredient in pottery glazes. |
Materials |
Nytal Talc
|
Materials |
Navajo Pumice
|
Materials |
Mt. St. Helens Ash
|
Materials |
Magnesite
|
Materials |
Zinc Oxide
A pure source of ZnO for ceramic glazes, it is 100% pure with no LOI. |
Glossary |
Flux
Fluxes are the reason we can fire clay bodies and glazes in common kilns, they make glazes melt and bodies vitrify at lower temperatures. |
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