金屬矿物的光片,往往并不是整个光面都是金屬矿物,有时其中带有砂非金屬矿物,要观察这些非金屬矿物与金屬矿有什么关系,就须要用薄片来鑑定。以往碰到这样的問題时,就只好把它磨成光片和薄片兩种片子,这对观察及磨制方面都增加了許多麻煩。如果我們能用光薄片來代替,不仅觀察方便,而且可以大大的节省材料和时間。因为光薄片既能作光片,也能作薄片。因此,我們在研究金屬矿物的種类、性質,含量及分佈情況和生成过程,同时也能了解伴生的非 Light sheet metal minerals, often not all the smooth surface are metallic minerals, sometimes with sand and non-metallic minerals, to observe these non-metallic minerals and metal ore have anything to do with the need to use thin slices to identify. In the past, when such a problem was encountered, it had to be polished into two films of light and flakes, which added a lot of trouble to observation and grinding. If we can replace the light sheet, not only the convenience of observation, but also can greatly save material and time. Because the light sheet for both light, but also for the film. Therefore, we are studying the type, nature, content and distribution of metallogenic minerals and the process of their formation, as well as the associated non-associative