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位于西秦岭礼(县)—岷(县)成矿带西段的寨上金矿床,是近年发现的一个大型微细浸染型金矿。在研究甘肃寨上金矿床物质组分的过程中,笔者通过对岩矿石的等离子质谱分析和对矿物的反光显微镜下观察、电子探针分析,发现寨上金矿床存在白钨矿的富集体。根据化学成分圈定出了独立的白钨矿矿体,确认该矿床为金-钨-锑(自然金-白钨矿-辉锑矿)建造矿床。其与四川西北部马脑壳金-钨-锑矿床在地质背景、含矿岩石、矿化形式、矿物组合、元素组合和成矿过程相似。鉴于在川甘陕三角地带泥盆系—三叠系中类似寨上的金矿床、矿点众多,注意在此类金矿中分析和评价钨等有用组分,对提高金矿的综合利用价值是十分重要的。
The Zhaishang gold deposit, located in the western Qinling Li county (()) - Min (county) metallogenic belt, is a large finely disseminated gold deposit discovered in recent years. In the process of studying the material composition of the Zhaishang gold deposit in Gansu province, the author has found the presence of scheelite enrichments in the Zhaishang gold deposit through the analysis of the rock mass by mass spectrometry and the observation of the mineral by the light-reflecting microscope and electron probe. Based on the chemical composition, an independent scheelite ore body is delineated to confirm that the deposit is a deposit for gold-tungsten-antimony (natural gold-scheelite-stibnite). It is similar in geological background, ore-bearing rocks, mineralized forms, mineral assemblages, elemental assemblages and metallogenic processes to the Matuojin gold-tungsten-antimony deposit in northwestern Sichuan. In view of the similar gold deposits in the Devonian-Triassic deposits in the Sichuan-Gansu-Shaanxi-Shaanxi Triassic, there are many ore-bearing sites. Attention should be paid to the analysis and evaluation of useful components such as tungsten in such gold mines to increase the comprehensive utilization value of gold mines It is very important.