| 牡丹江穆棱沸石矿床矿化分带特征与规律 |
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| 引用本文：.2004.Mineralization Zonation of Muling Zeolite Deposit in Mudanjiang [J].Mineral Deposits,23(1):31~38 |
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| 基金项目:中国科学院地质与地球物理研究所矿产资源研究重点实验室开放基金、教育部博士点基金(20010491007)及国土资源部非传统矿产资源开放研究实验室基金(200104) |
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| 中文摘要:文章以穆棱沸石矿床为例，探讨了天然沸石矿矿化分带特征与矿石物 化性能的空间变化规律。研究表明：矿床不同部位沸石矿化类型的差异变化与碱金属K、Na 元素的分异富集特征关系密切；若两者分异富集明显，易形成单一的斜发沸石或丝光沸石矿 ；反之，则形成混合型沸石矿。由矿体浅部往深部，矿石物化性能的差异变化总体表现为：NH+4和K+的交换容量、最大热失重值、吸湿率及气体吸附容量等渐趋增大；而矿石的 耐酸性和热稳定性却有相反的变化趋势。 |
| 中文关键词:地质学 沸石矿 矿化分带 矿石类型 化学组分 物化性能 牡丹江穆棱 |
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| Mineralization Zonation of Muling Zeolite Deposit in Mudanjiang |
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| Abstract:With a case study of the Muling zeolite ore deposit as an example, this paper ha s discussed the zeolitization zoning characteristics and the spatial variation o f physical_chemical capabilities of natural zeolite ores. Studies show that, alo ng with the intensification of mineralization and the enrichment of ore grades, H2O and CaO+MgO contents and (CaO+MgO)/(K2O+Na2O) ratios tend to increase whereas K2O+Na2O amounts seem to decrease. There are close relations between zeolitization types and differentiations of alkali metals K and Na. The higher K_Na differentiation is responsible for the formation of simple zeolite (mordeni te or clinoptilolite) deposits, while the lower K_Na differentiation is responsi ble for the formation of mixed zeolite (mordenite and clinoptilolite) deposits. The clinoptilolite orebodies are relatively enriched in K and depleted in Na, wh ereas the mordenite orebodies are relatively enriched in Na and depleted in K. T he variation of physical_chemical capabilities of natural zeolite ores in differ ent parts of an orebody shows the following regularity: the CEC of NH+4 and K+, the values of heated water losses, the hydroscopicity and the gas_absorbe d capacities tend to increase, while the resistances to heat and acid for zeolit e ores tend to decrease in downward succession of an orebody. |
| keywords:geology, zeolite, mineralization zoning, ore types, chemica l components, physical_chemical capabilities, Muling in Mudanjiang |
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