%0 Journal Article %T Influence of impurities in the quartz-feldspar sand glass quality %A Min’ko, N.I. %A Yakh’ya, M.. %A Dobrinskaya, O.A. %K silica sand, minerals-impurities, the glass composition, concentration, magnetic separation %J Technique and technology of silicates %D 2016 %N 23 %P 3 %I Individual Entrepreneur Svetlana Vasilievna Samchenko