| 摘要点击次数: 17 全文下载次数: 0 查看全文 查看/发表评论 下载PDF阅读器 |
| 基金项目：河北省地质勘查基金项目“河北省罗明沟、处长地、邓油坊幅1∶5万水系沉积物测量”（2014129653） |
|
| 摘要： |
| 河北康保炭头山一带新发现Rb元素矿化异常，为查明其分布特征，采用化探扫面、地球化学剖面、槽探、拣块样品分析等方法，初步揭示了Rb元素地球化学特征、富集规律及赋存状态。研究发现，该区中部炭头山一带Rb元素具有高—强高背景值，对应地质单元为华力西期斑状花岗岩，表明该时期岩浆活动与Rb富集密切相关；铷矿化多与钾长伟晶岩脉有关，Rb含量为482～674 mg/kg，最高1 025 mg/kg，且多产于岩体外接触伟晶岩带中或岩体内部，具有发现伟晶岩脉型铷矿的潜力。 |
| 关键词：铷（Rb） 地球化学特征 钾长伟晶岩脉 成矿潜力 河北康保炭头山 |
|
| Abstract: |
| A new rubidium (Rb) mineralization anomaly has been discovered in the area around Tantoushan, Kangbao, Hebei Province. To identify its distribution characteristics, methods such as geochemical reconnaissance, geochemical profiling, trench exploration, and chip sample analysis were employed. These efforts have initially revealed the geochemical characteristics, enrichment patterns, and occurrence states of Rb. The study found that the Tantoushan area in the central part of the region exhibits high to strongly high background values of Rb, with the corresponding geological unit being the Variscan porphyritic granite. This indicates a close correlation between magmatic activity during this period and Rb enrichment. Most Rb mineralization is associated with K-feldspar pegmatite dykes, where the Rb content ranges from 482 to 674 mg/kg, with a maximum of 1,025 mg/kg. Additionally, such mineralization is mostly distributed in the pegmatite zones at the external contact of the granite body or within the granite body itself, suggesting significant potential for discovering pegmatite dyke-type Rb deposits. |
| Keywords:rubidium (Rb) geochemical characteristic K feldspar pegmatite dyke mineralization potential Tantoushan, Kangbao, Hebei Province |
| 刘 洋.河北康保炭头山一带Rb地球化学特征及成矿潜力[J].地质学刊,2025,49(4):368-376 |
|
|
|
|
|