Babs Posted March 25, 2017 Report Share Posted March 25, 2017 What would the effect of subst.calcite with whiting in a C6 glaze Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted March 25, 2017 Report Share Posted March 25, 2017 My guess is they are exactly the same or maybe whiting contains some different crystals of CaCO3. Like Quartz and Flint, it's still Silica. Link to comment Share on other sites More sharing options...
Mark C. Posted March 26, 2017 Report Share Posted March 26, 2017 I use whiting in my glazes (ion 50# bags finely ground)and also calcite in my water system to add minerals to my domestic water as its mineral free from the well. The calcite is many times the cost and is in a unground form (large crystals in 50# bags)-My guess is they are pretty close in makeup-the largest difference may be the cost. Link to comment Share on other sites More sharing options...
Babs Posted March 26, 2017 Author Report Share Posted March 26, 2017 Thanks calcite is described as crystalline CaCo3 whiting justCaCo3 so action in glazes would be the same.... Link to comment Share on other sites More sharing options...
Mark C. Posted March 26, 2017 Report Share Posted March 26, 2017 I added a bit to above post of mine. Link to comment Share on other sites More sharing options...
glazenerd Posted March 26, 2017 Report Share Posted March 26, 2017 Thanks calcite is described as crystalline CaCo3 whiting justCaCo3 so action in glazes would be the same.... Look at it like peanut butter: whiting is smooth and calcite is chunky Nerd Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted March 27, 2017 Report Share Posted March 27, 2017 When Terri and I did our soda firing in January, we used a combo of soda ash, baking soda and whiting to form "plaster" chunks that we could throw into the firebox. This is an image of the leftover calcium carbonate that I had to break out of the firebox with a hammer after the firing. Terri said it looked like the stuff that sometimes forms next to hot springs, and wondered if if it might be calcite. It was sort of sculptural, so I took some chunks home. They crumbled back into powder within a couple of weeks, as they absorbed moisture from the air. Link to comment Share on other sites More sharing options...
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