Daim ntawv thov:Vertical nplhaib siab gradient ntub sib nqus sib nqus tshuab tau siv dav hauv kev sib cais ntub rau cov hlau nplaum tsis muaj zog xws li hematite, limonite, siderite, chromites, limonite, wolfram thiab lwm yam zoo li hlau sib cais rau kev ua kom huv ntawm cov hlau tsis muaj hlau, xws li quartz. , feldspar, nightline, fluorite, kaolin thiab lwm yam.