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水城横塘发现的钒锌铅矿是迄今为止国内外已知的最富砷的钒锌铅矿 ,其中As2 O3 含量高达 5 .81 % ,属于钒锌铅矿与砷锌铅矿的类质同象系列。本文研究了它的产状、化学组成、X 射线衍射特征、红外光谱和稀土元素组成特征并与国外相似矿物进行了对比。结果表明 ,As在矿物中替代V进入矿物晶格 ,是原来的铅锌硫化物在表生条件经次生氧化形成 ,但V和As的富集机制还有待于进一步研究
The vanadium-zinc-lead found in Watertown Hengtang is the most arsenic-rich vanadium-zinc-lead ore known to date, of which As2O3 content is as high as 5.81%. It belongs to the similarities between vanadinite and arsenopyrite Like series. In this paper, its production, chemical composition, X-ray diffraction characteristics, infrared spectra and rare earth element composition characteristics were studied and compared with similar foreign minerals. The results show that the substitution of V for minerals into the mineral lattice in As is the result of the secondary oxidation of lead and zinc sulfide under epigenetic conditions. However, the enrichment mechanism of V and As remains to be further studied