广西桂北垒洞煌斑岩中金刚石的发现及其矿物组合特征
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摘要
桂北罗城垒洞煌斑岩(云煌岩)中发现了与安徽栏杆地区相似的金刚石。垒洞云煌岩呈岩筒状产出并有明显分带性,从岩筒中心→边缘可分为3个相带:中心相为具气孔状-杏仁状构造云煌岩和角砾状云煌岩;过渡相为云煌岩;边缘相为强碳酸岩化-褐铁矿化云煌岩。本次发现的金刚石产于中心相气孔状-杏仁状构造云煌岩中,岩石主要由富镁黑云母、透长石、辉石、角闪石(或闪辉矿物假象)组成。发现的金刚石其拉曼光谱具有1331cm-1处的金刚石特征峰,红外吸收光谱显示既含有1282cm-1吸收峰,又含有1175cm-1吸收峰的ⅠaAB型金刚石特征。电子探针分析表明,垒洞煌斑岩中金刚石伴生矿物组合为镁-铁铝榴石、铬尖晶石亚族的含镁铬铁矿和镁铬铁矿,以及贫铬透辉石、碳硅石和橄榄石。与其他地区含矿煌斑岩相比,矿物组合既有相同也有不同之处,为广西金刚石找矿提供依据。
The paper reports the natural diamond discovered in Leidong lamprophyre of Luocheng,Guangxi Province,which shares the similar characteristics with the diamond found in Langan district,Anhui Province.Leidong lamprophyre occurred as the pipe form,could be divided into three phase zoning from its centre to margin,they are vesicular-amygdaloidal structure and brecciated structure mica-lamprophyre,homogeneous structure mica-lamprophyre,intensely carbonated-limonite lithified mica-lamprophyre respectively.The diamond was discovered in the rock of central phase,the rock is mainly made of eastonite,sanidine,pyroxene,hornblende(or pseudomorph).The diamond got from Leidong lamprophyre has the peak at 1331 cm~(-1) in Raman spectra-the diamond characteristic peak,and has two peaks at 1282 cm~(-1) and 1175 cm~(-1) in infrared absorption spectrum-theⅠaAB type diamond characteristic peaks.The results of electronic probe analysis show that the associated minerals of diamond are mainly almandine with certain magnesium content,and chromite with certain magnesium content and magnochromite-both in chromium spinel subfamily,and the poor-chromium diopside,moissanite and olivine.Compared with indicator mineral combination in other area's ore-containing lamprophyre,have the same characteristics,also the different.The result of the study may provide an import reference for diamond exploration in Guangxi.
The paper reports the natural diamond discovered in Leidong lamprophyre of Luocheng,Guangxi Province,which shares the similar characteristics with the diamond found in Langan district,Anhui Province.Leidong lamprophyre occurred as the pipe form,could be divided into three phase zoning from its centre to margin,they are vesicular-amygdaloidal structure and brecciated structure mica-lamprophyre,homogeneous structure mica-lamprophyre,intensely carbonated-limonite lithified mica-lamprophyre respectively.The diamond was discovered in the rock of central phase,the rock is mainly made of eastonite,sanidine,pyroxene,hornblende(or pseudomorph).The diamond got from Leidong lamprophyre has the peak at 1331 cm~(-1) in Raman spectra-the diamond characteristic peak,and has two peaks at 1282 cm~(-1) and 1175 cm~(-1) in infrared absorption spectrum-theⅠaAB type diamond characteristic peaks.The results of electronic probe analysis show that the associated minerals of diamond are mainly almandine with certain magnesium content,and chromite with certain magnesium content and magnochromite-both in chromium spinel subfamily,and the poor-chromium diopside,moissanite and olivine.Compared with indicator mineral combination in other area's ore-containing lamprophyre,have the same characteristics,also the different.The result of the study may provide an import reference for diamond exploration in Guangxi.
引文
[1]路凤香,郑建平,陈美华.有关金刚石形成条件的讨论[J].地学前缘,1998(3):125-131.
[2]白文吉,杨经绥,ROBINSON P,等.西藏罗布莎蛇绿岩铬铁矿中金刚石的研究[J].地质学报,2001(3):404-409.
[3]杨经绥,徐向珍,李源,等.西藏雅鲁藏布江缝合带的普兰地幔橄榄岩中发现金刚石:蛇绿岩型金刚石分类的提出[J].岩石学报,2011,27(11):3171-3178.
[4]张安棣.金刚石找矿指示矿物研究及数据库[D].北京:科学技术出版社,1991.
[5]梅厚钧,唐春景,李荪蓉,等.中国的钾镁煌斑岩和金伯利岩与金刚石矿床生成[J].中国科学:D辑地球科学,1998(增刊2):71-77.
[6]罗会文,杨光树,盛学庸.我国的第一批含金刚石金云火山岩:为贵州已知的含金刚石岩石正名[J].贵州地质,1994(1):8-26.
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[8]李荣清.湖南金刚石原生矿找矿研究的现状与展望[J].矿床地质,1996(增刊2):17-18.
[9]章人骏.论沅水流域及其邻区金刚石原生矿的前景[J].湖南地质,1985(1):1-14.
[10]王康明,刘俊思.论扬子地台金刚石找矿[J].四川地质学报,2005(4):224-232.
[11]褚有龙.广西金刚石原生矿存在可能性探讨[J].广西地质,2000(4):35-39.
[12]苏坚.广西桂东南地区金刚石找矿可能性及找矿前景探讨[J].低碳世界,2016(15):66-67.
[13]王新宇,彭松柏,吴祥珂,等.桂北地区钾镁煌斑岩的发现及找矿意义[J].地质科技情报,2013,32(3):93.
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[17]王磊,金鑫镖,王新宇,等.桂北罗城垒洞煌斑岩形成过程:地球化学、年代学和Sr-Nd-Pb同位素约束[J].地质科技情报,2015,34(1):10-19.
[18]张洁,蔡逸涛,董钟斗,等.安徽栏杆金刚石矿物特征及其寄主母岩地球化学特征研究[J].宝石和宝石学杂志,2015,17(5):1-11.
[19]苑执中,彭明生,李勋贵.辐射处理彩色金刚石的紫外-可见-近红外吸收光谱研究[J].矿物岩石地球化学通报,2005,24(增刊1):7.
[20]HEERDEN L A,BOYD S R,PILLINGER C T,et al.The carbon andnitrogen iso tope characters of A rgyle and Ellendale diamonds[C]//Siberian Branch of Russian A cademy of Sciences,6th IKC Extended A bstracts,1995:225-227.
[21]陈美华,路凤香,狄敬如,等.辽宁瓦房店金刚石的阴极发光和红外光谱分析[J].科学通报,2000,45(13):1424-1428.
[22]FIELD J E.The Properties of natural and synthetic diamond[M].Wear Mechanisms of Mono and Multilayer CVD Diamond Films,1992:473-513.
[23]钟凤竹.含矿金伯利岩的标型矿物及其特征[J].矿物岩石,1983(1):23-34.
[24]DAWSON J B,STEPHENS W E.Statistical classification of garnets from kimberlite and associated xenoliths[J].The Journal of Geology,1975(5):589-560.
[25]张培元.当代金刚石找矿物理论和方法[M].地质部中国地质矿业集团总公司(筹备组),1998.
[26]罗会文,杨光树.贵州省镇远地区钾镁煌斑岩岩石特征[J].岩石矿物学杂志,1989(2):97-109.
[27]林玮鹏,丘志力,董斌,等.湖南宁乡钾镁煌斑岩及相关岩石重砂锆石地球化学特征、U-Pb年龄及其地质意义[J].中山大学学报(自然科学版),2011,50(3):105-111.
[28]WANG X L,ZHOU J C,QIU J S,et al.LA-ICP-MS U-Pb zircon geochronology of the Neoproterozoic igneous rocks from northern Guangxi,South China:implications for tectonic evolution[J].Precambrian Research,2006,145(1/2):111-130.
[29]谢桂青.中国东南部晚中生代以来的基性岩脉(体)的地质地球化学特征及其地球动力学意义初探:以江西省为例[D].贵阳:中国科学院地球化学研究所,2003.
[30]范蔚茗,王岳军,郭锋,等.湘赣地区中生代镁铁质岩浆作用与岩石圈伸展[J].地学前缘,2003,10(3):159-169.
[31]ZHOU X M,SUN T,SHEN W Z,et al.Petrogenesis of Mesozoic granitoids and volcanic rocks in South China:a response to tectonic evolution[J].Episodes,2006,29(1):26-33.
[32]康丛轩,杨献忠,蔡逸涛,等.桂北罗城地区水牛峒煌斑岩地球化学特征[J].长春工程学院学报(自然科学版),2018,19(3):61-66.
[33]王仲会,赵俊累,等.金刚石成矿模型与勘查方法[M].北京:地质出版社,1998.
[34]MENZIES M A.Mantle ultramafic xenoliths in alkaline magmas:evidence for mantle heterogeneity modified by magmatic activity[C]//HAWKESWORTH C J,Norry M J.Continental Basalts and Mantle Xenoliths.London:Shiva,1983:92-110.
[35]BERGMAN S C.Lamproites and other potassium-rich igneous rocks:a review of their occurrence,mineralogy and geochemistry[J].Geological Society,London:Special Publications,1987,30(1):103-190.
[36]江万.贵州东部镇远地区钾镁煌斑岩的矿物学和岩石学研究[J].现代地质,1995(3):351-358.
[37]刘观亮,汪雄武,吕学森.大洪山钾镁煌斑岩岩石学、矿物学特征及含矿性研究[M].北京:地质出版社,1993.
[38]舒小辛.扬子地台西缘钾质煌斑岩类的岩石学研究[J].岩石学报,1994(3):248-260.
[2]白文吉,杨经绥,ROBINSON P,等.西藏罗布莎蛇绿岩铬铁矿中金刚石的研究[J].地质学报,2001(3):404-409.
[3]杨经绥,徐向珍,李源,等.西藏雅鲁藏布江缝合带的普兰地幔橄榄岩中发现金刚石:蛇绿岩型金刚石分类的提出[J].岩石学报,2011,27(11):3171-3178.
[4]张安棣.金刚石找矿指示矿物研究及数据库[D].北京:科学技术出版社,1991.
[5]梅厚钧,唐春景,李荪蓉,等.中国的钾镁煌斑岩和金伯利岩与金刚石矿床生成[J].中国科学:D辑地球科学,1998(增刊2):71-77.
[6]罗会文,杨光树,盛学庸.我国的第一批含金刚石金云火山岩:为贵州已知的含金刚石岩石正名[J].贵州地质,1994(1):8-26.
[7]李子云,马文运.宁乡县云影窝含金刚石钾镁煌斑岩地质特征[J].湖南地质,1993(4):221-225.
[8]李荣清.湖南金刚石原生矿找矿研究的现状与展望[J].矿床地质,1996(增刊2):17-18.
[9]章人骏.论沅水流域及其邻区金刚石原生矿的前景[J].湖南地质,1985(1):1-14.
[10]王康明,刘俊思.论扬子地台金刚石找矿[J].四川地质学报,2005(4):224-232.
[11]褚有龙.广西金刚石原生矿存在可能性探讨[J].广西地质,2000(4):35-39.
[12]苏坚.广西桂东南地区金刚石找矿可能性及找矿前景探讨[J].低碳世界,2016(15):66-67.
[13]王新宇,彭松柏,吴祥珂,等.桂北地区钾镁煌斑岩的发现及找矿意义[J].地质科技情报,2013,32(3):93.
[14]吴祥珂,王新宇,梁国科,等.广西金刚石成矿条件及选区评价[R].南宁:广西地质调查院,2017.
[15]广西地质矿产局.广西壮族自治区区域地质志[M].北京:地质出版社,1985.
[16]湖南省地质矿产局.湖南省区域地质志[M].北京:地质出版社,1988.
[17]王磊,金鑫镖,王新宇,等.桂北罗城垒洞煌斑岩形成过程:地球化学、年代学和Sr-Nd-Pb同位素约束[J].地质科技情报,2015,34(1):10-19.
[18]张洁,蔡逸涛,董钟斗,等.安徽栏杆金刚石矿物特征及其寄主母岩地球化学特征研究[J].宝石和宝石学杂志,2015,17(5):1-11.
[19]苑执中,彭明生,李勋贵.辐射处理彩色金刚石的紫外-可见-近红外吸收光谱研究[J].矿物岩石地球化学通报,2005,24(增刊1):7.
[20]HEERDEN L A,BOYD S R,PILLINGER C T,et al.The carbon andnitrogen iso tope characters of A rgyle and Ellendale diamonds[C]//Siberian Branch of Russian A cademy of Sciences,6th IKC Extended A bstracts,1995:225-227.
[21]陈美华,路凤香,狄敬如,等.辽宁瓦房店金刚石的阴极发光和红外光谱分析[J].科学通报,2000,45(13):1424-1428.
[22]FIELD J E.The Properties of natural and synthetic diamond[M].Wear Mechanisms of Mono and Multilayer CVD Diamond Films,1992:473-513.
[23]钟凤竹.含矿金伯利岩的标型矿物及其特征[J].矿物岩石,1983(1):23-34.
[24]DAWSON J B,STEPHENS W E.Statistical classification of garnets from kimberlite and associated xenoliths[J].The Journal of Geology,1975(5):589-560.
[25]张培元.当代金刚石找矿物理论和方法[M].地质部中国地质矿业集团总公司(筹备组),1998.
[26]罗会文,杨光树.贵州省镇远地区钾镁煌斑岩岩石特征[J].岩石矿物学杂志,1989(2):97-109.
[27]林玮鹏,丘志力,董斌,等.湖南宁乡钾镁煌斑岩及相关岩石重砂锆石地球化学特征、U-Pb年龄及其地质意义[J].中山大学学报(自然科学版),2011,50(3):105-111.
[28]WANG X L,ZHOU J C,QIU J S,et al.LA-ICP-MS U-Pb zircon geochronology of the Neoproterozoic igneous rocks from northern Guangxi,South China:implications for tectonic evolution[J].Precambrian Research,2006,145(1/2):111-130.
[29]谢桂青.中国东南部晚中生代以来的基性岩脉(体)的地质地球化学特征及其地球动力学意义初探:以江西省为例[D].贵阳:中国科学院地球化学研究所,2003.
[30]范蔚茗,王岳军,郭锋,等.湘赣地区中生代镁铁质岩浆作用与岩石圈伸展[J].地学前缘,2003,10(3):159-169.
[31]ZHOU X M,SUN T,SHEN W Z,et al.Petrogenesis of Mesozoic granitoids and volcanic rocks in South China:a response to tectonic evolution[J].Episodes,2006,29(1):26-33.
[32]康丛轩,杨献忠,蔡逸涛,等.桂北罗城地区水牛峒煌斑岩地球化学特征[J].长春工程学院学报(自然科学版),2018,19(3):61-66.
[33]王仲会,赵俊累,等.金刚石成矿模型与勘查方法[M].北京:地质出版社,1998.
[34]MENZIES M A.Mantle ultramafic xenoliths in alkaline magmas:evidence for mantle heterogeneity modified by magmatic activity[C]//HAWKESWORTH C J,Norry M J.Continental Basalts and Mantle Xenoliths.London:Shiva,1983:92-110.
[35]BERGMAN S C.Lamproites and other potassium-rich igneous rocks:a review of their occurrence,mineralogy and geochemistry[J].Geological Society,London:Special Publications,1987,30(1):103-190.
[36]江万.贵州东部镇远地区钾镁煌斑岩的矿物学和岩石学研究[J].现代地质,1995(3):351-358.
[37]刘观亮,汪雄武,吕学森.大洪山钾镁煌斑岩岩石学、矿物学特征及含矿性研究[M].北京:地质出版社,1993.
[38]舒小辛.扬子地台西缘钾质煌斑岩类的岩石学研究[J].岩石学报,1994(3):248-260.