Flux Source

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.

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Materials	Muscovite Mica
Materials	Dolowhite
Materials	Volcanic Ash 2
Materials	Gers Borate 9/97
Materials	Gerstley Bor (99)
Materials	Suzorite 325-PE
Materials	Noor Hematite
Materials	Noor Albite
Materials	Noor Talc
Materials	Vicron Whiting
Materials	Marblewhite Whiting
Materials	USAKOS Wollastonite
Materials	KARIBIB Dolomite
Materials	Luzenac Talc 00S
Materials	Talc 2C
Materials	Nyad 325 Wollastonite
Materials	TDM 92 Talc
Materials	Sierralite Talc
Materials	CT-30 Talc
Materials	Texas Talc 92
Materials	Snocal 40
Materials	Turkish Colemanite A mineral with very high B2O3 and CaO content.
Materials	Light Magnesium Carbonate C2FD
Materials	Camadil 95 Dolomite
Materials	Laguna Borate A Gerstley Borate substitute that was available during the early 2000s.
Materials	ABC Colemanite
Materials	Wood Ash
Materials	Sylvite
Materials	Sodium Fluosilicate
Materials	IMCO Borate A Gerstley Borate substitute that was available during the early 2000s.
Materials	Colemanite 38
Materials	Disodium Octaborate Tetrahydrate
Materials	CGS 3.1 Spodumene
Materials	Boric Oxide
Materials	Borax Decahydrate
Materials	Vapenec Whiting
Materials	Kuncice Dolomite
Materials	Roudnice Talc
Materials	Hydroboracite 30
Materials	Desertalc
Materials	Pfizer Wollastonite
Materials	Sodium Carbonate Heptahydrate
Materials	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
Materials	Arsenic Oxide
Materials	Calcium Carbonate E-5-1P
Materials	China Stone O-606aP
Materials	Wollastonite S-4
Materials	Wollastonite C-901P
Materials	Bone Ash Calcined
Materials	Cherry Ash A type of wood ash used as an ingredient in pottery glazes.
Materials	Amtalc-C98
Materials	Spluga Talc
Materials	Unimin Potash Feldspar 300#
Materials	Synthetic Ash
Materials	Rice Husk Ash A type of plant ash used as an ingredient in pottery glazes.
Materials	Kiln Bat Wash W5
Materials	Hardwood Ash A type of wood ash used as an ingredient in pottery glazes.
Materials	Coal Ash
Materials	Talc B-4-33P
Materials	Bismuth Subnitrate
Materials	Potassium Cryolite
Materials	Anhydrous Sodium Sulfate
Materials	Sodium Nitrate
Materials	Potasium Nitrate
Materials	Hydrated Lime
Materials	Sodium Tripolyphosphate
Materials	Colemanite AM
Materials	Grapevine Ash
Materials	Lead Fluoride
Materials	Barium Fluoride
Materials	Vanadinite
Materials	Precipitated Lime
Materials	Seriphyl
Materials	Quicklime
Materials	Zinc Borate
Materials	Mount Pinatubo Ash
Materials	Ceramelt
Materials	Zinc Carbonate
Materials	Sodium Fluoride
Materials	Cimcoat 325 Talc
Materials	Chilean Ulexite
Materials	Ceramitalc No. 1
Materials	Ceramitalc HDT
Materials	Ceramitalc 10A
Materials	Ceramitalc
Materials	Caltalc
Materials	Calcium Sulfide
Materials	Colemanite A natural source of boron that melts at a very low temperature.
Materials	Copper Sulfate
Materials	Glass Cullet
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
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
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
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
Materials	Lead Chromate
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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