个旧锡矿锡石的矿物学研究
Mineralogical Study of Cassiterite Grains from the Gejiu Tin Deposit
-
摘要: 对个旧锡矿床的块状硫化物型、电气石细脉带型、含锡白云岩型、层间氧化矿型矿床中的锡石晶体运用扫描电镜、阴极发光成像技术、X-射线粉晶衍射、电子探针等试验开展了矿物学的系统研究.结果表明从块状硫化物型→电气石细脉带型→含锡白云岩型→层间氧化矿型矿床中的锡石有如下特征或变化规律:①颗粒体积依次变小.②深色的锡石到浅色锡石晶胞参数变大,c:a值变小.③锡石晶体单型组合共有7种,单型从{111}锥面发育逐渐向{110}柱面发育.④锡石内部环带从均匀发育到不发育.以上特征均指示了4种矿床类型中锡石的形成温度依次降低.根据CL阴极发光下锡石亮度的差异,判断块状硫化物型、电气石细脉带型、含锡白云岩型矿床中锡石存在2个形成期次,认为此3类矿床在早阶段高温热液流体活动与早期锡石结晶作用有关,晚阶段低温热液流体活动与晚期锡石结晶作用有关.而层间氧化矿型矿床中的锡石具备悬浮在流体中生成的特征,可能为被流体搬运沉积形成,认为此矿床为重泥质沉积成因.Abstract: Through using scanning electron microscope, cathodoluminescence imaging, X-ray powder diffraction and electronic probe test, the mineralogy characteristics of various cassiterite crystals from the Gejiu tin deposit have been studies systematically in this paper, and their ore types include massive sulfide type, tourmaline veinlet belt type, tin dolomite, interlayer oxidized ore. The following conclusions have been drawn: ①the cassiterite particles from these four types of ore are progressively smaller. ②The cell parameters become larger from brunet cassiterite to light-colored ones, and their c:a value change smaller. ③There are seven types of monotype combination for cassiterite crystal, and their monotype are developed from {111} cone to {110} cylinder gradually. ④The internal bands of Cassiterite are changed from uniform development to nonuniform ones. The features mentioned above show that the temperatures for the formation of these cassiterites with four types are reducing successively. According to the luminance difference of cassiterite under CL cathodoluminescence, it's found that two forming periods existed in the cassiterite ore of massive sulfide type, tourmaline veinlet belt and tin dolomite. Thus, it's believed that the high temperature hydrothermal fluid activity of the cassiterite deposits with these three types is associated with early cassiterite crystallization in the early stage, but the low temperature hydrothermal fluid activity is associated with late cassiterite crystallization in the late stage. It's thought that the genesis of ore deposit is oriented argillaceous sedimentary origin, such as interlayer oxidized cassiterite deposit was generated in the suspended in a fluid and might be formed by fluid transportation and deposition.
-
Key words:
- mineralogy /
- cassiterite /
- SEM /
- cell parameters /
- CL /
- Gejiu tin deposit
-
-
蒋玺.室温高压下天然锡石状态方程研究[J].高压物理学报,2005,19(3):225-228.
JIANG Xi.Equation of State of Cassiterite at Room Temperature and up to 13GPa[J].Chinese Journal of High Pressure Physics,2005,19(3):225-228.
王玉往.内蒙古大井锡多金属矿床锡石矿物特征[J].地质与勘探,2006,42(4):51-56.
WANG Yuwang.Characteristics of tin minerals form Da Jing Tin-Polymetallic Deposit,inner Mongolia,China[J].Geology and Exploration,2006,42(4):51-56.
杨岳清,王文瑛,陈成湖,等.福建南平花岗伟晶岩中锡石的矿物学研究[J].福建地质,2006,25(2):75-81.
YANG Yueqing, WANG wenying,CHEN chenghu,et al.Study on the Cassiterite from the Granitic Pegmatites in Nanping[J].Geology of Fujian,2006,25(2):75-81.
陈骏.湖南柿竹园钨-钼-铋-锡矿床中锡石的产状与成因[J].地质论评,1992,38(2):164-171.
CHEN Jun.Mode of Occurrence and Origin of Cassiterite in the Shizhuyuan Skarn W-Mo-Bo-Sn Deposit,Huan Province[J]. Geological Review, 1992,38(2):164-171.
肖瑞金.江西会昌岩背斑岩锡矿锡石的标型特征[J].江西地质科技,1992,19(2):81-86.
XIAO Ruijin.Jiangxi making-friends rock back porphyry tin typomorphic characteristics of cassiterite[J]. Geological Science and Technology in Jiangxi,1992,19(2):81-86.
胡泽宁.云龙锡矿锡石的标型特征[J].矿物学报,1988,8(4):381-384.
HU Zening.Typomorphic Characteristics of Cassiterite in the Yunlong tin Deposit[J]. Acta Mineralogica Sinica, 1988,8(4):381-384.
范柱国,秦德先,谈树成,等 个旧老厂锡多金属矿田东部断裂构造地球化学异常特征[J].矿物学报,2004,24(2):130-135.
FAN Zhuguo,QIN Dexian,TAN Shucheng,et al. Geochemical Anomaly Signatures of Fault Structure in Eastern Gejiu Tin Polymetallic ore Field[J]. Acta Mineralogica Sinica,2004,24(2):130-135.
西南冶金地质勘探公司308队.个旧锡矿地质[M].北京:冶金工业出版社, 1984:148-152.
Metallurgical geological prospecting company in xinan308 team. Tin ore geology from Gejiu[M]. Beijing:Metallurgical Industry Press,1984:148-152.
薛君治,白学让,陈武.成因矿物学[M].中国地质大学出版社,1986.
XUE Junzhi, BAI Xuerang, CHEN Wu.Genetic mineralogy[M].China University of Geosciences Press,1986.
石铁铮.个旧老厂锡石晶体的标型特征及其地质意义[J].地球化学,1980,(2):200-205.
SHI Tiezheng. Cassiterite typomorphic characteristics of crystal and Geological significance from Gejiu laochangtin Depositan[J]. Journal of Geochemistry,1980,(2):200-205.
聂治,尹观.云南昌宁锡矿床锡石的标型特征研究[J].广东微量元素科学,2007,14(10):50-55.
NIE Zhi, YIN Guan. Cassiterite typomorphic characteristics of the study from Changning tin Depositan in yunnan[J].Guangdong Trace Elements Science,2007,14(10):50-55.
殷成玉.锡石标型特征及其在研究砂锡物质来源中的应用[J].地质与勘探, 1981,(11):24-27.
YIN Chengyu. In stone marker type characteristics and Study the application of sand source material of tin[J]. Geology and Exploration, 1981,(11):24-27.
柴刚,王文魁.锡石的晶体结构和形态的关系[J].岩石矿物学杂志,1988,7(4):374-381.
CAI Gang, WANG Wenkui. The Relationship between Crystal Structure External form of Cassiterite[J].Acta Petrologica et Mineraalogica,1988,7(4):374-381.
程彦博.个旧超大型锡多金属矿区成岩成矿时空演化及一些关键问题探讨[A].中国地质大学(北京)博士论文[D].2012.
CHENG Yanbo.Space-time evolution of diagenetic mineralization and Some of the key issues discussed in this paper from gejiu tin Depositan[A]. China University of Geosciences(Beijing)[D],2012.
黄品赟,汪相,陈洁,等.赣南淘锡坑锡矿床中锡石晶体形态学和地球化学研究[J].地质论评,2012,58(5):987-995.
HUANG Pinyun,WANG Xiang,CHEN Jie,et al. Morpgological and Geochemical Studies of the Cassiterite in Taoxikeng Tin Deposit,Southern Jiangxi,China[J]. Geological Review,2012, 58(5):987-995.
张增佑.云龙锡矿床锡石结晶作用的研究[J].云南地质,1994,13(1):86-97.
ZHANG Zengyou.A Study on the Cassiterite Crystallization of Yunlong Tin Deposit[J].Yunnan Geology,1994,13(1):86-97.
施光海,王长秋.差异扩散速度与晶体形态标志[J].岩石矿物学杂志,1998,17(3):281-287.
SHI Guanghai,WANG Changqiu.Differerntial Diffussion Velocities and Morphological Typomorphic Characteristics of Crystals[J]. Acta Petrologica et Mineraalogica,1998,17(3):281-287.
张必敏.湖南千里山—骑田岭芙蓉锡矿田锡石的成因矿物学及流体包裹体研究[A].中国地质大学硕士论文[D],2006.
汪相.花岗岩中锆石的韵律环带结构研究[J].矿物学报,1993,13(2):124-129.
WANG Xiang.Oscillatory Zoning in Zircon Crystals from Granitic Rocks[J].Acta Mineralogical Sinica,1993,13(2):124-129.
PIDGENON R T,NEMCHIN A A,HITCHEN G J. Internal structures of zircons from Archaean granites from Archaean granites from the Darling Range batholith: implications for zircon stablility and the interpretation of zircon U-Pbages[J]. Contribution to Mineralogy and Petrology,1998,132:288-299.
CONNELLY JN.Degree of preservation of ignrous zonation in zircon as asignpost for concordancy in U/Pbgeochronology[J].Chemical Geology,2000,172:25-39.
-
计量
- 文章访问数: 2757
- PDF下载数: 3034
- 施引文献: 0
下载: