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天然形成的金颗粒在显微镜下千姿百态,常见的有树枝状、苔藓状、海绵状、结晶状、不规则片状和葡萄状。近年来,在加拿大、美国、巴拿马、玻利维亚、哥伦比亚、圭亚那,塞浦路斯、新西兰、澳大利亚、尼日利亚、巴布亚新几内亚、法国和捷克斯洛伐克等国家的砂矿和原生矿中发现了一种颇具特色的球状金颗粒。它们产于冰碛砂矿中,富蔷薇辉石硅质岩风化露头上微小裂隙内的上状铁锰氧化物里,含铜黄铁矿矿床上部铁帽的自
The natural formation of gold particles in different poses and under the microscope, common dendritic, moss-like, sponge-like, crystalline, irregular flaky and grape-like. In recent years, a distinctive spherical gold has been found in the sand and primary mines of Canada, the United States, Panama, Bolivia, Colombia, Guyana, Cyprus, New Zealand, Australia, Nigeria, Papua New Guinea, France and Czechoslovakia Granules. They are produced in the moraine ores, rhyolitic pyroxene weathered microcracks on the outcrops of iron-manganese oxide, copper-bearing pyrite upper iron cap from