Ground Limestone – a common name for calcium carbonate; is a primary ingredient for the glass making industry, including flat glass, window glass, automotive glass, and glass used in bottles, glasses and other household items. Ground limestone is used as a stabilizer to improve mechanical properties and physical appearance of glass.
GLC Minerals offers high purity ground limestone with very low levels of undesirable contaminants. It has a high calcium content in the order of 97% CaCO3 with the added advantage of consistent Magnesium content typically of 1% MgCO3. Therefore, it can have both economic and environmental benefits to the glass producer.