广东始兴地区钨锡多金属矿找矿实践与探索

摘要

Shixing, Guangdong Province, is one of important tungsten polymetallic ore concentrated area in Eastern Nanling mineralizationzone. Two large deposits, ie. Liangyuan Nb-Ta-W-Sn and Nanshankeng W-Sn polymetallic deposit, were found by Nanjing Center, CGS during the investigation of tungsten polymetallic ore in this area. The W and Mo polymetallic deposits occurred in granite complex of Yanshan period, Nb, Ta, W and Sn polymetallic deposit in greisen and highly evolved muscovite albite granite , and stratabound skarn type W and Sn polymetallic deposits in the upper Devonian strata . This article further defines the characteristics of W and Mo polymetallic deposit in the granite, Nb-Ta-W-Sn polymetallic deposit in the greisen and albite graniter,and skarn type W-Sn polymetallic deposit in Shixing and summarizes prospecting procedure and method and as well metallogenic model for the W-Sn polymetallic ore in eastern Nanling.%　　广东始兴地区位于南岭东段，是南岭重要的钨多金属矿集中区之一。近年来中国地质调查局在该区实施钨多金属矿调查评价中，找到了具有大型远景的良源铷铌钽钨锡多金属矿床和南山坑钨锡多金属矿床，特别是在燕山期复式岩体中花岗岩型钨钼多金属矿床（简称“体中体”式钨钼多金属矿床）、高分异演化形成的云英岩型和白云母化钠长石花岗岩型铷铌钽钨锡多金属矿床（简称“高分异演化式”铷铌钽钨锡多金属矿床）和受中、上泥盆统地层控制的层控矽卡岩型钨锡多金属矿床的发现，实现了南岭东段地区找矿新突破。本文通过对广东始兴地区钨锡多金属矿找矿实践和探索，进一步明确了寻找“体中体”式钨钼多金属矿床、“高分异演化”式铷铌钽钨锡多金属矿床和受中、上泥盆统地层控制的层控矽卡岩型钨锡多金属矿床等类型矿床的思路，总结了钨锡多金属矿找矿工作程序和方法及南岭东段地区钨锡多金属矿成矿模式。这些成果对于南岭，乃至整个华南地区钨锡多金属矿找矿具有重要的指导意义。