作为矿点分类的235处,其中伟晶岩168处,余者为碱性正长岩-碳酸盐岩杂岩体或未确定类型。由于五十年代初首次查明了地质特征的这些杂岩体,使它成了矿业生产最有希望的来源。一九六一年以来,在魁北克的奥卡由圣劳伦斯铌公司和金属公司从碱性正长岩-碳酸盐岩杂岩体中开采出铌(烧绿石),从一九六九年开始,由加拿大钽矿业公司从曼尼托巴的别尔尼克湖的大型分带伟晶岩中回收钽(钽锡矿)。历史加拿大铌钽资源的发现和勘探经历了九十年(1882—1972)的历史,并且涉及到全国许多地方。 There are 235 pegmatite sites, of which there are 168 pegmatites, the others are alkaline syenite-carbonate complex or undetermined type. Due to the first identification of these complex features of geological features in the early 1950s, it has made it the most promising source of mineral production. Since 1961, Auc in Québec has produced niobium (pyrochlore) from Alkaline Lawsonite-Carbonate complex by St. Lawrence Ngoc Company and the Metal Company, from 1969 Initially, tantalum (tantalum) was recovered by Canadian tantalum mining company from the large zonated pegmatite of the Bernek Lake in Manitoba. History Canada The discovery and exploration of niobium and tantalum resources in Canada experienced a ninety year (1882-1972) history and covered many parts of the country.