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对美国东南部某些硫化矿物中的几种痕量元素进行了研究,测定了25个矿床,其中11个属于蓝岭地区,4个属于毗邻的皮德蒙特地区.所研究的矿床位置见图1.所测定的黄铁矿、磁黄铁矿、黄铜矿、闪锌矿等矿物是经过挑选的,因为这些矿物的存在比较普遍,虽然磁铁矿在皮德蒙特地区少见.我们从116个矿石光面上选取矿物相分析了钴、镍、锰、铅、锡、铬、钼和金,一共有372个样品.痕量元素是用原子吸收分光光度计按标准方法测定.这次所研究的痕量元素,是指存在于矿物中而不影响该矿物化学式的那些元素.对于铅只有当矿石中方铅矿(硫化铅)很少或没有,不能构成清晰的矿物相时,才把它看作痕量元素.
Several trace elements in some sulphide minerals in the southeastern United States have been studied and 25 deposits have been determined, of which 11 belong to the Blue Ridge area and 4 belong to the adjacent Piedmont area. 1. The determined minerals such as pyrite, pyrrhotite, chalcopyrite and sphalerite have been selected because the presence of these minerals is relatively common, although magnetite is uncommon in the Piedmont region. From 116 A total of 372 samples were analyzed for the mineral phase selected from the mineral phases for cobalt, nickel, manganese, lead, tin, chromium, molybdenum and gold. The trace elements were determined by atomic absorption spectrophotometry using standard methods. The trace elements studied are those elements that are present in the mineral without affecting the chemical formula of the mineral. For lead only if it contains little or no galena (lead sulfide) in the ore and does not form a clear mineral phase Think of trace elements.