| 云南腾冲锡矿带地质背景及锡矿类型 |
| |
| 引用本文： | 张士鲁.云南腾冲锡矿带地质背景及锡矿类型[J].矿床地质,1986,5(3):19-26. |
| |
| 作者姓名： | 张士鲁 |
| |
| 作者单位： | 云南省地矿局第四地质大队 |
| |
| 摘 要： | 云南腾冲锡矿带是近几年才发现的。以往许多地质学者把东南亚锡矿向北延伸仅与云南境内的个旧锡矿相连接,因那时腾冲地区是个处女地。自七十年代末,本区开展了1/20万区调,发现了若干锡石重砂异常,与此同时,第四地质大队对旧矿点、老窿和铁帽露头取样分析,找到和评价了一批锡矿床,从而揭示了在滇西找锡的良好前景。
|
Geological Setting And Ore Types Of The Tengchong Tin Ore Belt In Yunnan Province |
| |
| Abstract: | Geological setting and types of tin deposits along the Tengchong tin ore belt of Yunnan Province are described in this paper. The belt lies in the south of the Yanshanian Gandise-Tanggula fold belt. The stanniferous granites were formed mainly during Yanshanian and Himalayan orogenies dated at 120-70 Ma and 60-40 Ma respectively, and might be divided into three zones. The Carboniferous Menghong Group is especially enriched in tin. Besides, the ore-controlling structure is also important in mineralization. Ore deposits along the Tengchong tin ore belt might be grouped into seven types, namely disseminated cassiterite (intrusive body) type, pegmatite type, skarn type, greisen type, quartz vein type. Porphyry polymetallic sulfide type and placer type, with the greisen type and placer type being the major commercial tin ore types. The discovery of the Tengchong tin ore belt not only furnishes new information to the northward extension of the Southeast Asia tin ore belt, but is of guiding significance in prospecting for tin deposits in northwest Yunnan and east Tibet. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《矿床地质》浏览原始摘要信息 |
| 点击此处可从《矿床地质》下载免费的PDF全文 |
|
