河北唐河透闪石玉的宝石学特征及矿床成因

陈呈; 於晓晋; 王时麒

河北唐河透闪石玉的宝石学特征及矿床成因

1. 北京科技大学土木与环境工程学院, 北京 100083;
2. 北京大学地球与空间科学学院, 北京 100871

详细信息

作者简介:
陈呈(1989-),女,地质工程专业硕士研究生,主要从事宝玉石鉴定和研究

中图分类号: TS93
计量
- 文章访问数: 198
- HTML全文浏览量: 29
- PDF下载量: 29
出版历程
- 收稿日期: 2014-02-13

Study on Gemmological Characteristics and Ore Genesis of Nephrite from Tanghe,Hebei Province

1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Earth and Space Sciences, Peking University, Beijing 100871, China

摘要

摘要: 通过电子探针、X射线粉末衍射、拉曼光谱、化学全岩分析以及显微镜镜下观察，确定了唐河透闪石玉的主要矿物组成为透闪石，透闪石的质量分数一般在80%以上，部分在95%以上，以纤维交织结构为主；杂质矿物有碳酸盐、石英、透辉石、滑石、褐铁矿等，质量分数少于20%。唐河透闪石玉相对和田玉，颗粒较粗，密度和硬度稍低，光泽稍差。通过氢、氧、硅同位素分析以及岩浆岩、围岩和矿石的稀土元素配分模式表明，其岩浆岩（花岗岩）只提供了成矿热液（H₂O），Mg、Ca、Si主要来源于白云石和硅质条带或结核；通过包裹体测温推测其为中温成矿。经过分析研究，认为唐河透闪石玉为中酸性岩体与白云质大理岩的接触交代产物。
- 透闪石玉 /
- 宝石学特征 /
- 矿床成因 /
- 河北唐河
Abstract: In recent years，a kind of nephrite from Tanghe has been discovered by some wonderful stone amateurs in Tanghe basins of Baoding，Hebei Province，which was called“Tangheyu”by the locals.However，it has not been studied whether the structure and quality of nephrite from Tanghe are corresponding with nephrite.In a field trip of local regional geology of the mine from Tanghe，the samples were collected.In this paper，the gemmological，mineralogical and petrology characteristics of the samples from Tanghe are systematically studied.It is roughly confirmed that the origins of nephrite from Tanghe are the contact zones between intermediate－acid granodiorite or granite and dolomitic marble，which locate in the stratum of Miwushan Group Jixian Period and Gaoyuzhuang Group Changcheng Period.
- nephrite /
- gemmological characteristic /
- ore genesis /
- Tanghe,Hebei Province

HTML全文

参考文献(9)

[1]	河北省区域地质矿产调查研究所.区域地质调查报告——菜村岗(J50E005003)[R].2009:1-41.
[2]	崔文元,杨富绪.和田玉(透闪石玉)的研究[J].岩石矿物学杂志,2002,21(增刊):26-33.
[3]	陈克樵,陈振宇.和田玉的物质组分和物理性质研究[J].岩石矿物学杂志,2002,21(增刊):34-40.
[4]	中国地质科学院矿床地质研究所.透明矿物显微镜鉴定表[M].北京:地质出版社,1997.
[5]	王时麒,赵朝洪,于洸,等.中国岫岩玉[M].北京:科学出版社,2007:22-45.
[6]	Graham C H,Hamon R S,Sheppard M F.Experimental hydrogen isotope studies:Hydrogen isotope exchange between amphibole and water[J].American Mineral,1984(69):128-138.
[7]	Zheng Y F.Calculation of oxygen isotope fractionation in anhydrous silicate minerals[J].Geochim Coschin Acta,1993(57):1 079-1 091.
[8]	丁悌平,蒋少涌,万德芳,等.硅同位素地球化学[M].北京:地质出版社,1997.
[9]	李闫华,鄢云飞,谭俊,等.稀土元素在矿床学研究中的应用[J].地质找矿论丛,2007,22(4):294-298.