论文部分内容阅读
在湖北省恩施市渔塘坝的富硒碳质硅质岩、碳质页岩及其废弃岩石堆中，作者首次发现了多种形态的自然硒。本文根据自然硒的产出环境和成因将其分为三种，一种产于近地表废弃“石煤”堆中；一种与构造作用有关；另一种与表生风化作用有关。近地表废弃“石煤”堆中的自然硒是与岩层燃烧（或自燃）有关，见有晶形完好、颗粒粗大的晶体；与构造作用有关的自然硒多为毛发状、针状；与表生风化作用有关的自然硒颗粒细小，针状晶体少见。
In the rich-seated carbonaceous silicalite, carbonaceous shale and waste rock piles in Yutangba, Enshi City, Hubei Province, the authors first discovered various forms of natural selenium. Based on the natural selenium production environment and its causes, this paper divides it into three types, one is produced in the abandoned “stony coal” pile near the surface; one is related to tectonism and the other is related to the epigenetic weathering. The natural selenium in the near-surface abandoned “stony coal” heap is related to the combustion (or spontaneous combustion) of the rock formation, and there are crystals with intact crystal shape and coarse grains. The natural selenium related to tectonics is mostly hairy and needlelike; Weathering related to natural small selenium particles, needle-shaped crystals rare.