| 刘文恒,刘继顺,罗江华,马慧英,许亚男.云南东川雪岭磷矿地质特征与成因探讨[J].地质找矿论丛,2014,29(2):254-261 |
| 云南东川雪岭磷矿地质特征与成因探讨 |
| Geological characteristics and genesis of Xueling phosphorite deposit in Dongchuan area,Yunnan province |
| 投稿时间：2013-05-09 修订日期：2013-08-22 |
| DOI：10.6053/j.issn.1001-1412.2014.02.015 |
| 中文关键词: 雪岭磷矿 地质特征 矿床成因 云南东川 |
| 英文关键词:Xueling phosphorite deposit geological characteristics genesis Dongchuan Yunnan province |
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| 摘要点击次数: 1988 |
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| 中文摘要: |
| 雪岭磷矿处于东川断隆与禄劝断坳接合部，为一浅海相沉积层状磷块岩矿床。磷矿主要赋存在下寒武统渔户村组一段，岩性为胶磷矿磷块岩、含磷白云岩、含磷泥质粉砂岩、含磷粉砂质泥岩及含磷白云质灰岩。矿石矿物主要为胶磷矿，脉石矿物主要为白云石和少量硅质、粉砂质泥质物；矿石化学成分主要为P2O5，CaO，MgO，SiO2，F，酸不溶物。矿石结构主要为不同粒级的颗粒胶结结构，构造以条带状构造为主，以及少量的块状构造。矿床成因属于早寒武世时期海侵背景下磷质随上升洋流在扬子地台沉积所致，后期的风化作用导致了磷质的进一步富集。 |
| 英文摘要: |
| Xueling Phosphorite deposit is a sedimentary deposit located at joint of Dongchuan fault-uplift and Luquan fault-depress. The phosphorite occurrs in Lower Cambrian Member ∈1y1 of Yuhucun Formation including collophane-bearing phosphorite, phosphorus-bearing dolostone, phosphorus-bearing lutaceous siltstone, phosphorus-bearing silty mudstone and phosphorus-bearing dolomitic limestone. Collophane is the main ore mineral, dolomite gangue mineral and mainly are and a little siliceous, silt, argillaceous materials impurities. P2O5, CaO, MgO, SiO2, F, insolubles in acid are the main composition of the ore. Cementation of variously-sized grains is the main texture and banding the main structure and massive structure a little. Genetically it is a sedimentary deposit enriched by late weathering process. |
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