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和花岗岩、地层层位有关的富锡磁铁矿矿床,在我国有着广泛的分布,如广西的钟山黄宝,广东大顶、尖山,福建马坑,浙江铜山、安阳,江苏唐家墩,内蒙黄岗等矿区。总储量相当可观,其中有的规模相当大。由于磁铁矿矿石中含锡量高,资源至今难以利用。对于富锡磁铁矿锡的赋存状态的研究,一般认为锡以细粒锡石或木锡石等形式存在于磁铁矿或脉石中,如马来西亚、浙江等矿区。笔者于1974—1980年期间曾断续对浙江铜山含锡铁矿矿区的浅、深部大样和矿区有关地段及钻孔中的一系列标本,在前人工作的基础上,进行了光薄片、重砂、X光粉晶和衍射鉴定,化学物相、光谱矿物
The rich tin magnetite deposits related to granite and stratigraphic layers have a wide range of distribution in our country, such as Huangshan of Zhongshan, Guangdong Dading, Jianshan, Fujian Ma Hang, Zhejiang Tongshan, Anyang, Tangjiandun, Inner Mongolia Huanggang and other mining areas. The total reserves are considerable, some of which are quite large in scale. Due to the high content of tin in magnetite ore, resources have so far been difficult to use. For the study of the occurrence state of tin rich in tin, it is generally believed that tin is present in magnetite or gangue in the form of fine-grained cassiterite or mucilage such as Malaysia, Zhejiang and other mining areas. During the period 1974-1980, the author intermittently conducted a series of tests on the shallow and deep large samples of the Tongshan-tin-bearing iron ore mine area in Zhejiang Province and a series of specimens in the borehole. Based on the previous work, , Heavy sand, X-ray powder and diffraction identification, chemical phase, spectral minerals