短波红外伊利石结晶度在新疆白杨河铀矿床勘查中的应用
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摘要
短波红外伊利石结晶度是云母族矿物的重要光谱参数,与矿物的形成温度密切相关,通常用来指示可能的矿化/热液中心。使用 Field Spec4 可见光-短波红外地面非成像光谱仪对新疆白杨河铀矿床地表进行光谱测试与分析,发现矿床主要蚀变矿物伊利石结晶度具有明显的变化规律:矿床北缘接触带短波红外伊利石结晶度变化范围为0. 7～2. 0,大部分伊利石结晶度大于1. 0,少部分小于1. 0;矿床南缘接触带短波红外伊利石结晶度变化范围为0. 3～1. 0,多数伊利石结晶度小于0. 7,矿床北缘接触带伊利石结晶度明显大于南缘接触带,同时矿床北缘接触带为铀矿化富集部位,结合相关地质资料,可以推断北缘接触带为矿床可能的矿化/热液中心,这可以为白杨河铀矿床铀矿勘探提供参考与借鉴。
Short-wavelength infrared illite crystallinity is an important spectrum parameter for sericite group,which is usually closely related to the formation temperature of minerals,and often used to indicate possible mineralization/hydrothermal centers. The spectra from the Baiyanghe uranium deposit of Xinjiang were tested and analyzed by using visible-shortwave infrared spectrometer FieldSpec4,the results show that the short-wavelength infrared illite crystallinity of main altered mineral illite in the deposit has obvious change regulation: the values of shortwavelength infrared illite crystallinity in the northern contact belt of the deposit range from 0. 7 to 2. 0,most of which are greater than 1. 0 except for minor values. While the values of short-wavelength infrared illite crystallinity in the south contact belt of the deposit change from 0. 3 to 1. 0,most of which are less than 0. 7 except for minor values. The values of short-wavelength infrared illite crystallinity in the north contact belt are obviously greater than that in the southern contact belt of the deposit,moreover,the northern contact zone is enriched with uranium mineralization. Therefore,combined with geological data,the northern contact zone may be the possible mineralization/hydrothermal centers,which could provide references for uranium exploration.
Short-wavelength infrared illite crystallinity is an important spectrum parameter for sericite group,which is usually closely related to the formation temperature of minerals,and often used to indicate possible mineralization/hydrothermal centers. The spectra from the Baiyanghe uranium deposit of Xinjiang were tested and analyzed by using visible-shortwave infrared spectrometer FieldSpec4,the results show that the short-wavelength infrared illite crystallinity of main altered mineral illite in the deposit has obvious change regulation: the values of shortwavelength infrared illite crystallinity in the northern contact belt of the deposit range from 0. 7 to 2. 0,most of which are greater than 1. 0 except for minor values. While the values of short-wavelength infrared illite crystallinity in the south contact belt of the deposit change from 0. 3 to 1. 0,most of which are less than 0. 7 except for minor values. The values of short-wavelength infrared illite crystallinity in the north contact belt are obviously greater than that in the southern contact belt of the deposit,moreover,the northern contact zone is enriched with uranium mineralization. Therefore,combined with geological data,the northern contact zone may be the possible mineralization/hydrothermal centers,which could provide references for uranium exploration.
引文
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17梁树能,甘甫平,闫柏锟,等.白云母矿物成分与光谱特征的关系研究[J].国土资源遥感,2012,24(3):111-115Liang Shuneng,Gan Fuping,Yan Bokun,et al.Relationship between composition and spectral feature of muscovite[J].Remote Sensing for Land and Resources,2012,24(3):111-115
18 Scott K M,Yang K.Exploration and mining report 439R spectral reflectance studies of white micas[R].Melbourne:Australian Mineral Industries Research Association,1997
19叶发旺,孟树,张川,等.航空高光谱识别的高、中、低铝绢云母矿物成因学研究[J].地质学报,2018,92(2):395-412Ye Fawang,Meng Shu,Zhang Chuan,et al.Minerageny study of high-Al,medium-Al and low-Al sericites identified by airborne hyperspectral remote sensing technology[J].Acta Geologica Sinica,2018,92(2):395-412
2 Xu Q J,Ye F W,Liu S F,et al.Hyperspectral alteration information from drill cores and deep uranium exploration in the Baiyanghe uranium deposit in the Xuemisitan area,Xinjiang,China[J].Remote Sensing,2017,9(5):1-21
3修晓茜,范洪海,马汉峰,等.新疆白杨河铀铍矿床围岩蚀变及其地球化学特征[J].矿床地质,2011,27(4):215-220Xiu Xiaoqian,Fan Honghai,Ma Hanfeng,et al.The wall rock alteration and its geochemical characteristics of Baiyanghe uranium and beryllium deposit,Xinjiang[J].Uranium Geology,2011,27(4):215-220
4毛伟,王果,李晓峰,等.新疆白杨河铀铍矿床流体包裹体研究[J].矿床地质,2013,32(5):1026-1034Mao Wei,Wang Guo,Li Xiaofeng,et al.A study of fluid inclusions in Baiyanghe U-Be deposit,Xinjiang[J].Mineral Deposit,2013,32(5):1026-103
5赵聪,陈友良,叶永钦.新疆白杨河铀铍矿床微量元素地球化学特征[J].地球科学进展,2012,27(增刊1):304-306Zhao Cong,Chen Youliang,Ye Yongqin.Geochemical characteristics of trace elements in Baiyanghe U-Be deposit,Xinjiang[J].Advanced in Earth Science,2012,27(S1):304-306
6张成江,王果,陈奋雄,等.新疆白杨河铀-铍-钼矿床组合与成矿流体性质[J].矿物学报,2013,33(增刊2):276Zhang Chengjiang,Wang Guo,Chen Fenxiong,et al.Mineral assemblage and ore-forming fluid properties of the Baiyanghe U-Be-Mo deposit[J].Acta Mineralogica Sinica,2013,33(S2):276
7张鑫,张辉.新疆白杨河大型铍铀矿床成矿流体特征及矿床成因初探[J].地球化学,2013,42(2):143-152Zhang Xin,Zhang Hui.Geochemical characteristics of the ore-forming fluid and ore genesis of the Baiyanghe Be-U deposit,Xinjiang,China[J].Geochimica,2013,42(2):143-152
8张川,叶发旺,徐清俊,等.新疆白杨河铀铍矿区航空高光谱矿物填图及蚀变特征分析[J].国土资源遥感,2017,29(2):160-166Zhang Chuan,Ye Fawang,Xu Qingjun,et al.Mineral mapping and analysis of alteration characteristic using airborne hyperspectral remote sensing data in the Baiyanghe uranium and beryllium ore district,Xinjiang[J].Remote Sensing for Land and Resources,2017,29(2):160-166
9杨志明,候增谦,杨竹森,等.短波红外光谱技术在浅剥蚀斑岩铜矿区勘查中的应用---以西藏念村矿区为例[J].矿床地质,2012,31(4):699-717Yang Zhiming,Hou Zengqian,Yang Zhusen,et al.Application of short wavelength infrared(SWIR)technique in exploration of poorly eroded porphyry Cu district:A case study of Niancun ore district,Tibet[J].Mineral Deposits,2012,31(4):699-717
10 Chang Z,Hedenquist J W,White N C,et al.Exploration tools for linked porphyry and epithermal deposits:Example from the Mankayan intrusion-centred Cu-Au district,Luzon,Philippines[J].Economic Geology,2011,106(8):1365-1398
11 Yang K,Browne P R L,Huntington J F,et al.Characterising the hydrothermal alteration of the Broadlands-Ohaaki geothermal system,New Zealand,using short-wave infrared spectroscopy[J].Journal of Volcanology and Geothermal Research,2001,106:53-65
12董连慧,冯京,刘德权,等.新疆成矿单元划分方案研究[J].新疆地质,2010,28(1):1-15Dong Lianhui,Feng Jing,Liu Dequan,et al.Research for classification of metallogenic unit of Xinjiang[J].Xinjiang Geology,2010,28(1):1-15
13杨文龙,Mostafa F,李彦龙,等.西准白杨河铀铍矿床萤石及流体包裹体特征[J].新疆地质,2014,32(1):82-86Yang Wenlong,Mostafa F,Li Yanlong,et al.Characteristics of fluid inclusions and fluorite of Baiyanghe Beryllium deposit in Western Junggar[J].Xinjiang Geology,2014,32(1):82-86
14 Carsten L,Thomas C,James S C.Airborne hyperspectral imaging of hydrothermal alteration zones in granitoids of the Eastern Fold Belt,Mountisa Inlier,Australia[J].Geochemistry:Exploration,Environment,Analysis,2011,11:3-24
15 Ruitenbeek F J A V,Thomas J,Meer F D V D,et al.Characterization of the hydrothermal systems associated with archean VMS-mineralization at Panorama,Western Australia,using hyperspectral,geochemical and geothermometric data[J].Ore Geology Reviews,2012,45(6):33-46
16 Herrmann W,Blake M,Doyle M,et al.Short wave length infrared(SWIR)spectral analysis of hydrothermal alteration zones associate with base metal sulfide deposits at Rosebery and Western Tharsis,Tasmania and Highway-Reward,Queensland[J].Economic Geology,2001,74(7):1613-1629
17梁树能,甘甫平,闫柏锟,等.白云母矿物成分与光谱特征的关系研究[J].国土资源遥感,2012,24(3):111-115Liang Shuneng,Gan Fuping,Yan Bokun,et al.Relationship between composition and spectral feature of muscovite[J].Remote Sensing for Land and Resources,2012,24(3):111-115
18 Scott K M,Yang K.Exploration and mining report 439R spectral reflectance studies of white micas[R].Melbourne:Australian Mineral Industries Research Association,1997
19叶发旺,孟树,张川,等.航空高光谱识别的高、中、低铝绢云母矿物成因学研究[J].地质学报,2018,92(2):395-412Ye Fawang,Meng Shu,Zhang Chuan,et al.Minerageny study of high-Al,medium-Al and low-Al sericites identified by airborne hyperspectral remote sensing technology[J].Acta Geologica Sinica,2018,92(2):395-412