Strontium carbonate is a key component in the formulation of various specialized glasses, including television and display glass, and bioactive glasses for biomedical applications. It serves as a modifier to enhance physical and optical properties. Glass. Calcium citrate contains about 21% elemental calcium while calcium carbonate has 40%. But here's the thing – you absorb way more from the citrate form. From the production of ferrite magnets to its use in ceramic glazes and as a precursor for other strontium salts, the compound's versatility is a.