(‘Bamboo sugar’, Java) (Bourry, 1st English edition, 1901)Barley straw ash supplies several oxides, especially SiO2 and K2O.% 8.34 Na2O 24.29 K2O 8.20 MgO 42.00 CaO 3.01 SiO2 6.2 P2O5 0.62 Fe2O3 4.52 MnO 2.10 SO3 0.72 ClBeech ash supplies several oxides, especially CaO and K2O.% 8.34 Na2O 24.29 K2O 8.20 MgO 42.00 CaO 3.01 SiO2 6.2 P2O5 0.62 Fe2O3 4.52 MnO 2.10 SO3 0.72 Cl% 4.0 Na2O 16.5 K2O 10.9 MgO 55.5 CaO 5.45 SiO2 5.45 P2O5 1.0 Fe2O3% 9 Na2O 22.6 K2O 14.3 MgO 29.6 CaO 11.5 SiO2 7.9 P2O5 1.3 Fe2O3 0.4 MnO 3.4 LOIBirch ash supplies several oxides, especially CaO and K2O.% 9 Na2O 22.6 K2O 14.3 MgO 29.6 CaO 11.5 SiO2 7.9 P2O5 1.3 Fe2O3 0.4 MnO% 7.69 Na2O 12.53 K2O 7.69 MgO 57.5 CaO 3.84 SiO2 7.69 P2O5 1.0 Fe2O3% 9 Na2O 18 K2O 11 MgO 45 CaO 4 Al2O3 8 SiO2 4 P2O5 1 Fe2O3% 3.7 Na2O 4.3 K2O 6 MgO 44.2 CaO 0.52 Al2O3 24.28 SiO2 10.6 P2O5 1.01 Fe2O3 0.3 MnO 5.09 LOICedar ash supplies several oxides, especially CaO and SiO2.% 3.7 Na2O 4.3 K2O 6 MgO 44.2 CaO 0.52 Al2O3 24.28 SiO2 10.6 P2O5 1.01 Fe2O3 0.3 MnO% 2.33 Na2O 3.91 K2O 3.3 MgO 22.42 CaO 8.91 Al2O3 30.99 SiO2 1.91 P2O5 3.04 Fe2O3 1.26 MnO 21.44 LOICommon ash supplies several oxides, especially SiO2 and CaO.% 2.33 Na2O 3.91 K2O 3.3 MgO 22.42 CaO 8.91 Al2O3 30.99 SiO2 1.91 P2O5 3.04 Fe2O3 1.26 MnO 21.44 LOI% 28.0 Na2O 5.5 K2O 0.5 MgO 21.1 CaO 1.8 P2O5 34.0 CO2Desert plant ash supplies several oxides, especially Na2O and CaO.% 28.0 Na2O 5.5 K2O 0.5 MgO 21.1 CaO 1.8 P2O5 34.0 CO2% 0.56 Na2O 4.81 K2O 7.44 MgO 8.59 CaO 19.32 Al2O3 55.02 SiO2 0.3 TiO2 0.92 P2O5 1.67 Fe2O3 1.36 MnOFern ash supplies several oxides, especially SiO2 and Al2O3.% 0.56 Na2O 4.81 K2O 7.44 MgO 8.59 CaO 19.32 Al2O3 55.02 SiO2 0.3 TiO2 0.92 P2O5 1.67 Fe2O3 1.36 MnO% 3 Na2O 26 K2O 8 MgO 12 CaO 10 Al2O3 33 SiO2 6 P2O5 1 Fe2O3 1 MnOGrass ash supplies several oxides, especially SiO2 and CaO.Green: (unwashed lawn clippings, from Leach “A Potter’s Book”)0.41 KNaO 0.29 MgO 0.30 CaO 0.27 Al2O3 1.09 SiO2 0.12 P2O5 0.03 Fe2O3Green: (washed lawn clippings, from Leach “A Potter’s Book”)0.15 KNaO 0.32 MgO 0.53 CaO 0.38 Al2O3 1.52 SiO2 0.15 P2O5 0.05 Fe2O3% 6.20 Na2O 6.19 K2O 5.65 MgO 12.88 CaO 16.60 Al2O3 39.64 SiO2 9.00 P2O5 3.44 Fe2O3% 3 Na2O 5 K2O 5 MgO 10 CaO 11 Al2O3 59 SiO2 5 P2O5 2 Fe2O3% 9.12 Na2O 14 K2O 12 MgO 30 CaO 0.1 Al2O3 15.3 SiO2 13.1 P2O5 2.4 Fe2O3 0.1 MnO 3.88 LOI% 0.55 Na2O 1.49 K2O 5.44 MgO 35.9 CaO 3.69 Al2O3 14.08 SiO2 2.14 P2O5 0.94 Fe2O3 34.32 h3O 0.14 MnOHearth ash supplies several oxides, especially CaO and SiO2.% 0.55 Na2O 1.49 K2O 5.44 MgO 35.9 CaO 3.69 Al2O3 14.08 SiO2 2.14 P2O5 0.94 Fe2O3 34.32 h3O 0.14 MnO(Hearth ash (‘Dobai’), Japan (E. Kato, Interceram, 2 (1962), 110). We’ve gathered some of our favorite cone 10 glaze recipes to-gether in a convenient recipe-card format, perfect for printing and taking to the glaze lab or pottery studio. Though it is technically a glaze defect, crazed surfaces can actually be quite beautiful and I have really been enjoying the depth that crackling can create.sandstone glaze: 40...potash feldspar 30...silica 20...whiting 10...epk 100...alumina hydrate turquoise: 40...barium carbonate 30... silica 20... soda bicarbonate 10... epkAs far as I know, every pottery teacher has had that charming moment when a new student joyously announces they've just found out that Malc...Custer Spar 4350 EPK 2400 Dolomite 2400 Whiting 480 Iron Chromate 672 Cobalt Carb 672 Borax 552 Bentonite 200Barium carbonate has long been used as an ingredient in high-fire glazes, sometimes conferring unique properties upon glazes. See more ideas about Ceramic glaze recipes, Glaze, Pottery glazes. I rely on pyrometric cones to control the firing speed. Many contemporary potters are still creating traditional glaze surfaces with celadon glazes, oil spot glazes, and others.
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