| 张 璞.内蒙古查干础鲁金矿地质特征及其金的产出特征[J].地质与勘探,2015,51(2):246-252 |
| 内蒙古查干础鲁金矿地质特征及其金的产出特征 |
| Geological characteristics and occurrence characteristics of the Chaganchulu gold deposit in Inner Mongolia |
| 投稿时间：2014-03-17 修订日期：2014-12-16 |
| DOI： |
| 中文关键词: 地质特征 产出特征 查干础鲁金矿 |
| 英文关键词: Geological characteristics, occurrence, Chaganchulu gold deposit |
| 基金项目:国家自然科学基金项目（编号：41402009）资助 |
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| 中文摘要: |
| 查干础鲁金矿矿体赋存在侵位于阿木山组的浅成超浅成次火山岩（次石英粗安岩）中，是受构造控制的蚀变岩型金矿床。通过对次石英粗安岩的岩石学特征、矿物学及地球化学特征进行分析，显示出次石英粗安岩为贫钙型铝过饱和系列，是金矿床的主要赋矿岩石，其次为细粒闪长玢岩。有用组份主要为Au，其次为Ag。金主要以自然金形式存在，主要与次石英粗安岩中的石英脉关系密切，或是存在于假象黄铁矿及褐铁矿中，虽然微粒金产出数量最多，但从面积比上看，则以粗粒金、巨粒金为主，赋存状态以晶隙金为主，包体金及裂隙金较少。自然金粒形态主要为片状、弯曲片状、不规则片状。 |
| 英文摘要: |
| Ore bodies of the Chaganchulu gold deposit, a tectonic-altered?rock?type, occur in hypabyssal-superficial volcano instrusive-rock (sub-volcano quartz?trachyandesite) in the Amushan Formation. Analyses of petrology, petrography and geochemistry of the sub-volcano quartz?trachyandesite have revealed a calcium-poor type and aluminum- oversaturated series, a major host rock for the gold deposit, and secondly host-rock fine-grained diorite-porphyrite. The useful component is mainly Au, followed by Ag. The main mineral components are of natural gold, pyrite and limonite. The coarse and huge grains occur in gold, which are flake-shaped, or bending, irregular, and the thickness of which is less than 0.010mm. The natural gold, an intercrystalline one, is closely related to the quartz vein in the sub-volcano quartz?trachyandesite. |
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