Previous referred to as #1 White. Source of calcia preferred for use in glazes. Whiting has traditionally been a source of CaO in raw glazes and glass. (However, whitings also typically contain some dolomite as a contaminant.) Whiting is generally inexpensive and there is a large calcium carbonate industry worldwide for non-ceramic uses of this mineral.
Price listed is per pound. Quantity discounts apply at 5, 10, 25, and 50 lbs.