| 魏元柏,赵宇.浙东地区银多金属矿床中菱锰矿的矿物学特征[J].地质找矿论丛,1995,(4):40-47 |
| 浙东地区银多金属矿床中菱锰矿的矿物学特征 |
| MINERALOGIC CHARACTERISTICS OF RHODOCHROSITE IN SILVER POLYMETALLIC DEPOSITS IN EASTEN ZHEJIANG PROVINCE |
| 投稿时间：1995-05-24 修订日期：1995-08-28 |
| DOI：10.6053/j.issn.1001-1412.1995.4. 005 |
| 中文关键词: 菱锰矿 银铅锌矿床 |
| 英文关键词: |
| 基金项目:国家自然科学基金 |
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| 摘要点击次数: 1217 |
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| 中文摘要: |
| 本文对产于黄岩五部和天台大岭口这二个银铅锌矿床中的菱锰矿,开展了成分、x射线衍射、红外光谱及差热曲线方面的研究,指出：这二个矿床中的菱锰矿,其MnCO3、FeCO3、MgCO3和CaCO3的平均分子比分别为0.936、0.035、0.007和0.022,明显地表现出高锰低铁贫镁钙的特征；在微量元素方面,以相对贫Co（Co/Ni平均值为0.457）富Ba（Ba/Sr平均值为15.014）为特征；x射线衍射、红外光谱和差热曲线与标准菱锰矿的特征基本一致。这些特征是由浙东地区银铅锌矿床的成矿特点和介质的Eh-pH变化特点所引起的。 |
| 英文摘要: |
| In this paper, the mineralogic characteristics of rhodochrosite from two Ag-Pb-Zn deposits,Huangyan Wubu and Tiantai Dalingkou, are discussed by carrying on the study of X-ray diffraction, infrared spectroscopy and differential thermal method.The mean molecular percent of MnCO3、FeCO3,MgCO3 and CaCO3 for the rhodochrosite from the two deposits are 0.936, 0.035,0.007 and 0.022 respectively. These numbers indicate obviously that the rhodochrosite possesses high content of Mn,low content of Fe, and lack of Mg and Ca. As for the trace elements, the relative low Co content (the mean Co/Ni ration=0.457) and high Ba content (the mean Ba/Sr ratio=15.014) are occurred. X-ray powder diffraction data, IR spectra and differential thermal curves generally coincide with that of the typical rhodochrosrte. The characteristics are due to the minerogenetic laws of the Ag-pb-Zn deposits in eastem Zhejiang Province and the changing value of Eh-pH in the medium. |
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