| 李赛赛.陕西省商南县穆家河钒矿床地质特征及钒的赋存状态研究[J].地质与勘探,2013,49(4):609-619 |
| 陕西省商南县穆家河钒矿床地质特征及钒的赋存状态研究 |
| Tectono-geochemical Characteristics and Prospecting Prediction of the Molybdenum Polymetallic Ore Concentration Area in Luanchuan, Henan Province |
| 投稿时间：2012-12-18 修订日期：2013-02-06 |
| DOI： |
| 中文关键词: 南秦岭 黑色岩系 穆家河钒矿床 钒赋存状态 |
| 英文关键词: South Qinling, black rock series, Mujiahe vanadium deposit, occurrence of vanadium |
| 基金项目:桂林理工大学科研启动项目（002401003374）和广西隐伏金属矿产勘查重点实验室联合资助 |
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| 中文摘要: |
| [摘 要] 穆家河钒矿床产于南秦岭下寒武统水沟口组第—岩性段，含矿岩石主要为硅质岩夹（炭质）泥岩。钒矿体严格受层位控制，呈层状、似层状产出，沿走向、倾向上延伸均较稳定。通过物相分析、X-射线衍射测试及电子探针分析，穆家河钒矿床中钒主要有三种赋存状态：存在于钒云母中、以胶体状态存在的V-Fe氧化物、以氧化物集合体形式存在的V-Ti，其中以钒云母为主。①钒云母的标型为2M1型，化学式为K(Al,V)2(Si,Al)4O10(OH)2或(K,Ba,Na0.75(Al,Mg,Cr,V)2(Si,Al,V)24O10(OH,O)2，呈片状、条带状产出，其V2O5含量最高可达到22.68%，钒以类质同相形式替代云母中的铝；②胶体状态存在的V-Fe氧化物，呈草莓状、圆球状、星点状、环状产出，颗粒直径小于10μm，化学组成主要为V、Fe、O，其中含钒最高可达到10.09%，不含水，为胶体老化后形成的非晶质体；③V-Ti氧化物集合体呈浸染状、星散状分布于岩石基质中，它最初是以胶体形式沉积，在后期成岩及地质演化过程中，其中钛的氧化物结晶形成锐钛矿、板钛矿等。 |
| 英文摘要: |
| Abstract: The Mujiahe vanadium deposit occurs in the first member of the lower Cambrian Shuigoukou Formation of southern Qinling Mountains. The ore-hosted rocks are silicalite rocks intercalated with Carbargillite, a black rock series. The vanadium ore bodies are controlled by the strata, occurring in stratified and stratiform-like forms, and extending stably along the strike and dip. Through the phase analysis, X-ray diffraction and electron microprobe analysis, we found three vanadium-containing minerals: roscoelite, V-Fe oxide, V-Ti oxide aggregation. ① Roscoelite. Its typomorphic mineral is 2M1, and its chemical formula is K(Al,V)2(Si,Al)4O10(OH)2 or (K,Ba,Na)0.75 (Al,Mg,Cr,V)2 (Si,Al,V)4 O10 (OH,O)2. It is flake, ribbon, contains vanadium to a maximum of 22.68%. The vanadium occurrence is mainly the same phase in the mica. ② V-Fe oxide. Its chemical composition mainly includes V, Fe, O, and a little Ti, Mg, whose particle diameter is less than 10μm. It displays strawberry-shaped, round-shaped, star-shaped or ring structures, and contains vanadium to a maximum of 10.09% without water. It is the colloid of FeO-V2O3. ③V-Ti oxide aggregation disseminates in the matrix of rock by dissemination and scattered specks. It initially deposited by colloid in the late stage of diagenesis and geological evolution process, in which the titanium oxide crystallized into anatase and brookite. |
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