在北美、霞石正长岩和长石的主要用户是玻璃器皿工业。1987年,由于加拿大玻璃器皿与塑料,铝和造纸业竞争仍很激烈,所以,霞石正长岩在玻璃器皿的消耗量没有增加。据报道,加拿大填料和增充剂的需求量很大。由于建筑业发展很快,特别是安大略和魁北克省建筑业活力更大,这样就使玻璃纤维的消耗量增大,从而导致霞石正长岩和长石的消耗量增 The main users in North America, nepheline syenite and feldspar are the glassware industry. In 1987, due to the competition between glassware and plastics in Canada and aluminum and papermaking industry, the consumption of nepheline syenite did not increase in glassware. According to reports, Canadian fillers and extenders are in great demand. Due to the rapid development of the construction industry, particularly the vibrant construction industry in Ontario and Quebec, the consumption of glass fiber has increased, resulting in increased consumption of nepheline syenite and feldspar.