江苏铜井娘娘山碱性火山杂岩体中黝方石之正名——蓝方石  

Corrective Name of"Nosean"-Hauyne of the Alkaline Volcanic Complex of Niangniang Shan,Nanjing

作　　者：黄蕴慧[1] 周秀仲[1] Huang Yunhui;Zhou Xiuzhong

机构地区：[1]中国地质科学院矿床地质研究所

出　　处：《岩矿测试》1982年第3期25-29,I0003,30,共7页Rock and Mineral Analysis

摘　　要：一、前言迄今为止,在我国一些地质学教科书及杂志中,均将江苏铜井娘娘山碱性火山杂岩体中的一种主要岩系:蓝方石响岩—蓝方石粗面斑岩—蓝方石正长岩系列错误地命名为黝方石响岩—黝方石粗面斑岩—黝方石正长岩等。Up to date,one of the essential rock-forming minerals-hauyne,occurring in a main rock series of alkaline volcanic complex of Niangniang shan,Nanjing-hauyne phonolite series,is still named incorrectly as"nosean".After a lot of work have been proceeded,the authors of this paper depend on enough data to suggest that the feldsparthoidal mineral of the phonolite series is actually hauyne,but not"nosean"as named by some geologists and mineralogists.The hauyne occurs as dodecahedral crystals 1.2-1.5 mm in maximum dimensions.It ranges in color from dark grey to greyish black,luster vitrous,and translucent.Under polarizing microscope,the fresh hauyne is transparent and colorless to pale blue without pleochroism.The trigonal and hexagonal sections are always to be seen.Cleavage{111}is perfect,{110}is good.Isotropic,N-1.5058(phonolite)-1.5062(trachyte).X-ray study shows the mineral to be isometric,a0=9.073A(phonolite)-9.14 A(trachyte).The strongest X-ray lines are:3.80(10),2.65(6),2.15(7),1.81(5)(phonolite);3.72(10),2.62(8),2.14(6),1.78(5)(trachyte).Microprobe analysis of a hauryne crystal from hauyne phonolite gives:SiO,35.28,A1_(2)O_(3)29.76,FeO 0.30,CaO 9.93,Na_(2)O 10.65,K_(2)O 0.06,SO_(3)10.43,sum 96.41.Chemical analysis of hauyne from trachyte porphyry gives’.SiO 34.13,CaO 7.92,MgOo.69,A1_(2)O_(3)25.10,TiO_(2)0.06,Fe2O_(3)1.12,MnO 0.05,K_(2)O 0.80,Na,O 15.33,SO_(3)11.46,C10.05,CO_(2)1.36,sum 100.80%,leading to the formula(Na_(5.39)K_(0.02) Ca_(1.42)_(6.83)[Al_(5.36)Si_(6.59)Fe^(3+)_(0.01)O_(2)][SO_(4)S_(0.56)Cl_(0.02)OH_(3.3)]In the infrared spectrograph there are Si-O and Si-O-Si deformation vibrations at 440-1000 frequency region and SO,"2 deformation vibrations at 620-1110 frequency region,

关 键 词：娘娘山 正长岩 黝方石 响岩 地质学 粗面斑岩 岩系 火山杂岩 

分 类 号：P61[天文地球—矿床学]