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用化学选择溶提、X射线衍射 (XRD)等技术 ,对土壤铁锰结核中锰矿物类型的鉴定进行了探讨。结果表明 :根据 0 .1mol·L-1盐酸羟胺 (HAHC)处理前后土壤铁锰结核的XRD峰的变化 ,可鉴定出其所含的锂硬锰矿和钙锰矿 ;分析HAHC处理前后同一XRD谱线上不受锰矿物干扰的相邻层状硅酸盐矿物衍射峰与所含锰矿物衍射峰强度的比值变化 ,确定了水钠锰矿的存在 ;结合铁锰结核中与锰矿物类型相关的元素含量 ,可鉴定出其所含的钡硬锰矿和铅锰矿。
The identification of manganese minerals in soil ferromanganese nodules was studied by chemical selective stripping and X-ray diffraction (XRD). The results show that the lithium-manganese ore and calcium-manganese ore can be identified according to the XRD peak of soil Fe-Mn nodules before and after treatment with 0.1 mol·L-1 hydroxylamine hydrochloride (HAHC). The same XRD spectrum On the other hand, the ratio of the diffraction peak of the adjacent layered silicate minerals to that of the manganese minerals was not affected by the manganese minerals, and the existence of birnessite was confirmed. Combined with the content of elements related to manganese mineral types in the Fe-Mn nodules , Can identify its contained barium and manganese ore and lead manganese ore.