Calcium Feldspar - Products Corporation of North America
GreenSpar is derived from the igneous rock Anorthosite, which is composed of 90% Plagioclase Feldspar, formed in a low quartz environment, resulting in a dense and consistent formation, with less than 10% being other minerals. Purity levels increase with the removal of iron bearing micas during processing which results in a monomineralic Anorthite.