甘肃小柳沟钨矿床矿石特征

ORE CHARACTERISTICS IN THE XIAOLIUGOU TUNGSTEN DEPOSIT OF GANSU PROVINCE

文章对甘肃小柳沟钨矿床矿石类型、矿石结构构造、矿石矿物化学成分、主要有用组分赋存状态及其镶嵌关系、矿石比重特征进行了详细论述,指出(1)小柳沟钨矿床矿石类型简单;(2)矿石结构构造较为复杂;(3)矿石中矿物组成较复杂,种类多;矿石中有用元素主要有钨,此外含硫、铜、铋、钼、锌、锡等,钨是矿石中主要回收对象,而硫、铜、铋等具有一定的综合利用价值,可以考虑综合回收;(4)矿石中钨主要呈白钨矿存在,有少量钨华及黑钨矿;矿石中铜主要呈黄铜矿存在,有少量斑铜矿或辉铜矿;矿石中铋主要呈辉铋矿存在;矿石中钼主要呈辉钼矿存在,部分呈类质同象分布于白钨矿中,这部分钼难以用选矿方法分离;矿石中含硫矿物主要为黄铁矿,次为磁黄铁矿,其他含硫的矿物有黄铜矿、辉铋矿、辉钼矿,但是量都很少;(5)1号矿体及4号矿体所处矿化带中矿体的比重值不尽相同,进行资源/储量估算时应区别对待。

Types, structures, mineral chemistry compositions, composing state and relationship of main useful components and gTavity of ores in the Xiaoliugou tungsten deposit in Gansu province is being described. It is pointed that ore types in the deposit are simple and ore structures are comparatively complex. Ore mineral composition is relatively complex with different types. Tungsten is a main useful element besides sulphur, copper, bismuth, molybdenum, zinc, tin etc, and can be used as main retrieved target in the ores with the useful components of sulphur, copper, and bismuth. Tungsten in the ores exists mainly as scheelite and some as wolfram ocher and wolframite. Copper mainly exists in chalcopyrite, and rarely in chalcomiclite and chalcocite. Bismuth mainly exists in bismuthinite. Molybdenum mainly exists in molybdenite and some in scheelite as isomorphs which are difficult to be separated. Main sulphur- bearing mineral is pyrite, pyrrhotite comes second. Other sulphur- bearing minerals are chalcopyrite, bismuthinite and molybdenite with less content. Ore weights in the No. 1 and No. 4 ore bodies are different and must be treated with certain discrimination when estimating resources and reserves.