| 胶东金青顶金矿床黄铁矿热电性标型特征及其地质意义 |
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| 引用本文：陈海燕,李胜荣,张秀宝,周起凤,张运强,刘振豪,张海芳,王宁.2010.Thermoelectric character of pyrite from Jinqingding glod deposit in eastern Shandong Province and its significance[J].Mineral Deposits,29(6):1125~1137 |
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| 基金项目:本文得到国家自然科学基金项目(90914002)、全国危机矿山接替资源找矿项目(20089937)和高等学校学科创新引智计划项目(B07011)资助 |
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| 中文摘要:金青顶金矿床内黄铁矿热电性标型特征的研究表明：从黄铁绢英岩阶段（Ⅰ）至多金属硫化物阶段（Ⅳ），黄铁矿热电导型的变化规律是P>N(Ⅲ)→P>>N(Ⅳ)；P型黄铁矿热电系数均值α〖TX-〗p和出现率P%由浅部到深部，总体为逐渐降低，局部呈波状起伏，与矿石平均金品位呈正相关关系。黄铁矿的热电系数_温度投图表明，该矿床的成矿温度集中在130～310℃，为中-低温矿床。黄铁矿的P%值由浅部至深部，沿矿体侧伏方向递减，推测成矿热液从NNE下方沿断裂向SSW上方运移，与矿体的侧伏方向一致；黄铁矿热电性参数填图显示，α〖TX-〗p和P%沿矿体侧伏方向出现与富矿段基本吻合的6个局部高值区，在-785 m以下，α〖TX-〗p和P%都呈明显降低趋势，推测Ⅱ号矿体在深部可能趋于尖灭。金青顶金矿床内黄铁矿的导型变化梯度与玲珑西山及玲珑东山金矿床相近，推测其延伸规模可能与玲珑西山及玲珑东山相当。 |
| 中文关键词:地质学 矿物学 黄铁矿 热电性 金矿床 金青顶 胶东 |
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| Thermoelectric character of pyrite from Jinqingding glod deposit in eastern Shandong Province and its significance |
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| Abstract:Based on a study of the thermoelectricity characteristics of pyrite, the authors consider that the electric conduct assemblage type of the pyrite changes in order of P＞N→P>N→P>>N from stage Ⅰ to Ⅳ. With some local fluctuations, P% and α〖TX-〗p of pyrite gradually decrease from the shallow part to the depth, and there exists a positive correlation between the P%, α〖TX-〗p values and the average gold grade. A calculation with empirical formula implies that the ore deposit is a low-medium temperature gold deposit, whose pyrite crystallization temperature is in the range of 130～310 ℃. In the NE lateral dipping direction of No.Ⅱ ore body, P% shows a regular increasing trend from the depth to the shallow part, implying that the migration of the hydrothermal solution was from NNE upward to SSW. Pyrite-thermoelectricity mapping shows that there are six local high_value areas of P% and α〖TX-〗p along the SSW to NNE line, which are basically consistent with the gold grades of the high-value areas. The No.Ⅱ ore body may tend to pitch out toward the deeper part, as implied by the significant reduction of P% and α〖TX-〗p. Based on a comparison of the variation gradient of pyrite between Jinqingding and others deposits in eastern Shandong Province, the authors hold that the extension in the dipping direction of the No.Ⅱ ore body might be similar to the extensions of the Linglong Xishan and Linglong Dongshan gold deposits. |
| keywords:geology, mineralogy, pyrite, thermoelectricity, gold deposit, Jinqingding, Jiaodong |
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