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河南省洛宁县金家湾金矿床产于华北地台南缘太华群石板沟组内。片麻岩蚀变后呈黄褐色块体。矿石主要为蚀变浸染网脉和少量含硫化物石英脉组成。矿床属绿岩带构造蚀变岩浸染型。按矿石类型拣块采样九个,含金品位1.5—108.93g/t。采掘揭露矿化带长千余米,含矿脉和矿化蚀变带宽20—30m。
The Lujian County Jinjiawan gold deposit in Henan Province is produced in the Shibanghou Formation of the Taihua Group in the southern margin of the North China Platform. Gneiss alteration was yellow brown block. The ore is mainly composed of altered disseminated reticular veins and a small amount of sulfide-bearing quartz veins. The deposit belongs to the greenstone belt tectonic alteration rock dipping type. Picking by ore type nine samples, gold grade 1.5-108.93g / t. Excavation exposes more than a thousand meters of mineralization belt, ore-bearing vein and mineralization alteration bandwidth of 20-30m.