在康古尔塔格金矿首次发现钠明矾石和斜钠明矾  

The natroalunite and tamarugite first found in Kanggu′er tage gold deposit in China

作　　者：韩照信[1] 王朝友[2] 

机构地区：[1]长安大学地球科学与国土资源学院,陕西西安710054 [2]中铁一局桥梁工程处物资管理中心,陕西渭南714000

出　　处：《西北大学学报（自然科学版）》2004年第5期583-586,共4页Journal of Northwest University（Natural Science Edition）

基　　金：国家"305"基金资助项目(96 915 05 04)

摘　　要：目的　研究康古尔塔格金矿床氧化带矿物,丰富我国氧化带矿物学。方法　野外地质观察和室内测试相结合。结果　在康古尔塔格金矿床首次发现钠明矾石和斜钠明矾,钠明矾石化学分析结果为(%)SO329.09,Al2O333.33,Fe2O32.55,Na2O6.60,K2O1.34,H2O26.21,总计99.12,计算晶体化学式为(Na1.05K0.14)1.19(Al3.21Fe3+0.16)3.37(S0.89O4)2(OH)6;X射线粉晶衍射主要数据为0.2970(10),0.2960(10),0.4905(8),0.5701(3)。斜钠明矾化学分析结果为(%):SO337.94,Al2O316.32,Na2O8.85,K2O0.06,H2O35.86,总计99.04,计算晶体化学式为Na1.12Al1.25[S0.93O4]2·6H2O,X射线主要粉晶衍射数据为0.4220(10),0.4210(10),0.3654(6)。结论　化学成分和晶体结构数据及其他矿物学特征表明,钠明矾石和斜钠明矾为我国首次发现矿物。AimTo study the oxidation zone minerals of kanggu′er tage gold deposit and to prove the rich oxidation zone mineralogy in China.MethodsThe combination of geologic observation in field and indoor testing.ResultsThe first discovery of natroalunite and tamarugite in kanggu′er tage gold deposit in China.The result of natroalunite chemical analysis is that(%): SO_3(29.09),Al_2O_3(33.33),Fe_2O_32.55,Na_2O6.60,K_2O1.34,H_2O26.21,and the total 99.12, So the crystal chemical formula of natroalunite is identified as(Na_(1.05)K_(0.14))_(1.19)(Al_(3.21)Fe^(3+)_(0.16))_(3.37)(S_(0.89)O_4)_2(OH)_6. The main XRD data of natroalunite is 0.297 0(10),0.296 0(10),0.490 5(8),0.570 1(3).Through the same methods it can be found that the result of tamarugite chemical analysis is that(%): SO_337.94,Al_2O_316.32,Na_2O8.85,K_2O0.06,H_2O35.86,and the total 99.04%,and the crystal chemical formula of tamarugite is identified as Na_(1.12)Al_(1.25)[S_(0.93)O_4]_2·6H_2O ,and the main XRD data of tamarugite is0.422 0(10),(0.421 0)(10),0.365 4(6).ConclusionCharacteristics of chemical composition and crystal structure data are shown that natroalunite and tamarugite is the first found minerals in China.

关 键 词：康古尔塔格 钠明矾石 斜钠明矾 

分 类 号：P578.76[天文地球—矿物学]