论文部分内容阅读
本文重点对滇东地区原生磷块岩和风化富集磷块岩中磷灰石特征进行对比研究，总结磷灰石富集规律。首先按风化程度、矿石组分结构构造不同特点，将磷块岩划分为十种矿石自然类型。通过对不同成因类型磷灰石的化学成分分析、微量元素分析、拉曼光谱、ＥＰＲ光谱、微形态和微组构研究，根据ＣＯ，ＯＨ￣－，Ｆ￣－的含量变化，将本区磷灰石划分为四个亚种，首次总结出磷灰石不同亚种与磷块岩类型之间成因内在联系。提出氟磷灰石主要形成于风化磷块岩中，碳氟磷灰石主要形成于原生沉积磷块岩中，羟碳氟磷灰石是组成原生菌藻磷块岩主要矿物的新认识。磷灰石的富集受内外因素的控制，滇池周边原生沉积磷块岩主要以碳酸盐类磷块岩为主，这种化学活性强的矿层为本区风化富集磷矿提供了极好的物质基础，再加上该区有利的气候、地形地貌、断裂构造及水文地质条件等，形成了优质风化磷矿。
In this paper, the characteristics of apatite in primary phosphate rock and weathering-enriched phosphorite in eastern Yunnan are compared and the rules of apatite enrichment are summarized. First of all, according to the degree of weathering and the structural features of the ore components, the phosphorous blocks are divided into ten natural types of ore. Based on the chemical composition analysis, trace element analysis, Raman spectroscopy, EPR spectroscopy, micromorphology and microstructure of apatite of different genetic types, according to the changes of CO, OH ~ -, F ~-, Divided into four subspecies, graystone is the first to summarize the intrinsic relationship between different sub-species of apatite and phosphorite type. It is suggested that fluorapatite is mainly formed in weathered phosphate rock, and that fluorapatite is mainly formed in primary sedimentary phosphate rock. Hydroxyfluorocarbon apatite is a new understanding of the main minerals that make up the algal Phosphorite rock. The enrichment of apatite is controlled by both internal and external factors. The primary sedimentary phosphorite around Dianchi Lake is mainly carbonate phosphorite, which is of great chemical activity and provides an excellent Material basis, coupled with the favorable climate, topography, fault structure and hydrogeological conditions of the area, formed a high-quality weathered phosphate rock.