Chelopech矿床矿物地球化学:Ⅱ。钠铝榴石中的微量元素

Victoria Vangelova
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引用次数: 0

摘要

采用LA-ICP-MS法测定了高硫化铜金矿床8、19-SE、19-NW、19-NE、19-SW、103-W、103-E、144、146、147、149-south、150和151区块的辉绿岩中微量元素的含量。结果表明,各块体的辉长岩-吕辉长岩均富集不同程度的“杂质”元素:19-SW块体富集Ge、Ga和W元素;从Bi 146区块开始;Se、Sb、Sn和In区块147;从149区块开始,Zn、Pb、Tl和Cd向南;Fe, Mn, Ti的block 8;来自103区块-Е的Au和Hg;从V、Ga和Mo的103-W街区;来自银的150区和Те的151区。微量元素在黄铁矿和辉铝-吕长石之间有优先分布。例如,银、铅、锰、镍、钴、铊、钼、铬、钛集中在第一个容器中,而锗、镓、铟、锡、锌、锑、碲、铋、汞、钒、钨集中在第二个容器中,在大多数情况下,它们在结构上是相关的。这两种矿物都是金的富集物,但后者的含金量最高(103区块为309ppm -Е, 151区块为118ppm),在这两种情况下,金的存在主要是由于原生金和(或)银和碲化物的微包裹体。
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Geochemistry of ore minerals from Chelopech deposit: II. Trace-elements in enargite-luzonite
The concentrations of trace elements in enargite-luzonite from blocks 8, 19-SE, 19-NW, 19-NE, 19-SW, 103-W, 103-E, 144, 146, 147, 149-south, 150, and 151 of copper-gold high sulphidation Chelopech deposit were determined by LA-ICP-MS. It was found that the enargite-luzonites from the individual blocks are enriched in different degrees of “impurity” elements: those from block 19-SW are enriched in Ge, Ga, and W; from block 146 of Bi; from block 147 of Se, Sb, Sn, and In; from block 149-south of Zn, Pb, Tl, and Cd; from block 8 of Fe, Mn, and Ti; from block 103-Е of Au and Hg; from block 103-W of V, Ga, and Mo; from block 150 of Ag and from block 151 of Те. In addition, a preferential distribution of trace elements between pyrite and enargite-luzonite is observed. For example, silver, lead, manganese, nickel, cobalt, thallium, molybdenum, chromium, and titanium are concentrated in the first, while germanium, gallium, indium, tin, zinc, antimony, tellurium, bismuth, mercury, vanadium, tungsten in the second, and in most cases they are structurally related. Both minerals are concentrators of gold, but it reaches its highest values in the latter (309 ppm from block 103-Е and 118 ppm from block 151), and in both cases its presence is mainly due to microinclusions of native gold and/or electrum and tellurides.
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