Geological Characteristics and Genetic Analysis of Diopside–Tremolite Deposit in Laozhuang, Nanzhao County, Henan Province
-
摘要:
南召县老庄透辉石–透闪石矿是河南省唯一的透辉石–透闪石矿床。矿区位于区域性栾川–明港大断裂的北侧,大地构造位置处于华北陆块南缘。矿区有2个透辉石–透闪石矿体,呈似层状赋存于青白口系栾川群南泥湖组上段中,矿体形态简单。围岩蚀变为透闪石化和透辉石化,次为钾长石化和金云母化等。矿石自然类型主要为金云母透辉石透闪石矽卡岩型、金云母透闪石透辉石矽卡岩型和金云母透闪石矽卡岩型。矿物成分主要为透闪石和透辉石,次为钾长石和金云母,方解石少量。矿石化学成分主要为SiO2、CaO、MgO和Al2O3,其次是FeO、K2O、Na2O和CO2等。透闪石+透辉石(Tl+Di)品位较高、较稳定,矿床平均品位(Tl+Di)为68.25%。透辉石–透闪石原矿代替硅灰石用于生产釉面砖。初步试验表明,制品性能稳定,节能效果明显。矿床属矽卡岩型矿床,成矿时代为早白垩世。矿床形成受早白垩世竹园石英正长斑岩体与南泥湖组上段中的白云石大理岩及层间破碎带的多重控制。矽卡岩期为主成矿期,干矽卡岩阶段形成透辉石,湿矽卡岩阶段形成透闪石,氧化阶段形成钾长石、金云母和方解石等。
Abstract:Laozhuang diopside–tremolite deposit in Nanzhao county is the only diopside–tremolite deposit in Henan Province. The mining area is located in the north of Luanchuan–Minggang regional fault, and the tectonic position is in the south margin of North China block. There are two diopside–tremolit eorebodies in the mining area, which occur in the upper part of Nannihu formation of Luanchuan group of Qingbaikou system in stratoid form. The orebody morphology is simple. The wall rock alteration are mainly tremolite and diopside, followed by potassic feldspar and phlogopitization. The natural types of ores are mainly phlogopite diopside skarn, phlogopite diopside skarn and phlogopite diopsides karn. The mineral composition is mainly tremolite and diopside, followed by potash feldspar and phlogopite, a small amount of calcite. The chemical composition of the ore are SiO2, CaO, MgO and Al2O3, followed by FeO, K2O, Na2O and CO2. Ore grade: tremolite + diopside (Tl + Di) is relatively high and stable, and the average ore grade (Tl + Di) is 68.25%. The preliminary test of diopside raw ore replacing wollastonite in the production of glazed tile shows that the product has stable performance and obvious energy saving effect. The deposit belongs to skarn type and the metallogenic epoch is early Cretaceous. The formation of the deposit is controlled by early Cretaceous Zhuyuan quartz syenite porphyry, dolomite marble in the upper Nannihu formation and interlayer fracture zone. Skarn stage is the main metallogenic stage. Diopside is formed in dry skarn stage, tremolite is formed in wet skarn stage, and potash feldspar, phlogopite and calcite are formed in oxidation stage.
-
表 1 南召县老庄矿区矿石特征表
Table 1. Ore characteristics of Laozhuang mining area in Nanzhao County, Henan Province
矿石类型 分布 颜色 结构构造 矿物成分 备注 金云母透辉石透闪石矽卡岩型 矿体底部 灰白–灰绿色 鳞片粒柱状变晶结构、
斑状变晶结构,
片状、条带状构造变斑晶:透辉石(2%~5%)、钾长石
(≤20%)、透闪石极少。基质:透闪石(30%~80%)、透辉石(0%~30%)、金云母(10%~20%)、钾长石(10%~
30%)、方解石(<3%)、磁铁矿等微量主要类型 金云母透闪石透辉石矽卡岩型 矿体中部 灰白色 鳞片粒柱状变晶结构,
片状、条带状构造透辉石(30%~70%)、透闪石(10%~25%)、金云母(10%~25%)、
钾长石(10%~30%)、方解石(<3%)、磁铁矿等微量主要类型 金云母透闪石矽卡岩型 矿体顶部 暗绿色 鳞片柱粒状变晶结构,
片状构造、块状构造透闪石(40%~80%)、金云母(15%~55%)、方解石(3%~20%)、
磁铁矿等微量主要类型 钾长石透辉石矽卡岩型 矿体顶部、底部 灰白–浅绿色 粒状变晶结构,
块状构造透辉石(30%~70%)、钾长石(6%~40%)、方解石(10%~30%)、
磁铁矿等微量次要类型 透闪石矽卡岩型 矿体顶部 浅绿色 粒柱状变晶结构,束状、
纤维状、放射状、片状构造透闪石(50%~85%)、钾长石(5%~40%)、透辉石(≤5%)、方解石(5%~25%),金云母、磁铁矿等微量 次要类型 表 2 南召县老庄区矿石化学成分、矿物成分表(%)
Table 2. Chemical composition and mineral composition of ores in Laozhuang District, Nanzhao County
化学成分 矿体编号 矿区 I II 最小值 最大值 平均值 最小值 最大值 平均值 最小值 最大值 平均值 SiO2 35.46 62.30 52.76 6.28 49.07 46.70 6.28 62.30 50.26 CaO 5.90 33.81 13.36 7.14 22.38 15.52 7.14 33.81 14.23 MgO 2.12 14.98 10.84 6.69 19.98 14.26 6.69 19.98 12.22 TFeO(FeO+Fe2O3) 3.05 8.44 4.81 3.15 6.46 4.57 3.15 8.44 4.71 Al2O3 6.29 13.58 10.75 6.46 12.64 10.21 6.46 13.58 10.53 K2O 0.30 8.10 3.31 0.00 4.85 2.56 0.00 8.10 3.01 Na2O 0.10 2.45 0.63 0.10 0.45 0.23 0.10 2.45 0.47 CO2 0.00 13.17 0.65 0.00 15.32 2.10 0.00 15.32 1.23 透闪石(Tl) 0.00 85.09 41.05 0.00 84.72 46.74 0.00 85.09 43.34 透辉石(Di) 0.00 70.96 27.61 0.00 74.13 20.92 0.00 74.13 24.91 透闪石+透辉石(Tl+Di) 39.42 85.30 68.66 43.48 84.72 67.66 39.42 85.30 68.25 钾长石(Kp) 2.67 31.40 12.54 0.00 17.75 5.58 0.00 31.40 9.73 金云母(Phl) 0.00 27.38 10.88 0.00 43.93 15.92 0.00 43.93 12.91 方解石(Cal) 0.00 29.90 1.48 0.00 34.78 4.75 0.00 34.78 2.80 表 3 南召县老庄矿区单矿物电子探针分析结果表
Table 3. Single mineral EPMA analysis results of Laozhuang mining area in Nanzhao County
矿物名称 化学成分(%) SiO2 TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O P2O5 ∑ 透闪石 55.215 0.055 3.51 5.65 0.195 19.50 13.26 0.345 0.11 0.015 97.855 透辉石 53.19 0.01 0.59 2.99 0.26 15.90 25.63 0.24 0.00 0.005 98.815 钾长石 63.60 0.00 18.88 0.12 0.01 0.02 0.13 0.55 16.39 0.01 99.71 金云母 41.05 0.69 17.09 8.17 0.26 19.24 0.17 0.12 9.39 0.00 96.18 -
陈国安. 透闪石作陶瓷原料的试验研究[J]. 矿产保护与利用,1998,(1):23–25.
陈毓川, 王登红, 徐志刚, 等. 中国重要矿产和区域成矿规律[M]. 北京: 地质出版社, 2015, 138–155.
CHEN Yuchuan, WANG Denghong, XU Zhigang, et al. Major Mineral Resources and Regional Metallogenic Regularity in China [M]. Beijing: Geological Publishing Housing, 2015, 702–723.
郭立宏,李静,陈艳. 陕西木龙沟矽卡岩型铁多金属矿床地质特征[J]. 西北地质,2013,46(4):152–155.
河南省地质矿产局. 河南省区域地质志[M]. 北京: 地质出版社, 1989: 68-74
Henan Provincial Bureau of Geology and Mineral. Regional Geology Mark of Henan Province[M]. Beijing: Geological Publishing Housing, 1989, 68–74.
黄慧宁,蒋伯昌. 透闪石在低温快烧釉面砖中的应用研究[J]. 陶瓷研究,1993,8(2):67–75.
黄杰,张辰子,王真,等. 河南方城双山玉的发现及初步研究[J]. 西北地质,2020,53(3):244–251.
姬果,王永辉,姬清海,等. 河南省方城县青山透辉石矿床地质特征及开发利用前景[J]. 现代矿业,2018,(8):35–38.
姬清海,张良,石文春,等. 南召透闪石-透辉石在陶瓷中的应用研究[J]. 矿产保护与利用,1998,(5):14–16.
姜寒冰,李宗会,杨合群,等. 秦岭地区成矿单元划分[J]. 西北地质,2014,47(2):146–154.
梁涛,白凤军,罗照华,等. 豫西熊耳山斑竹寺花岗斑岩岩体锆石U-Pb定年及地质意义[J]. 西北地质,2014,47(2):41–50.
刘传权,蔡志超,姬清海,等. 卢氏张家山铁矿床地球化学特征及成矿物质来源[J]. 西北地质,2015,48(4):88–99.
桑龙康, 马昌前. 岩石学[M]. 北京: 地质出版社, 2014, 72–207
SANG Longkang, MA Changqian. Petrology[M]. Beijing: Geological Publishing Housing, 2014, 72–207.
邵厥年, 陶维屏. 矿产资源工业要求手册[S]. 北京: 地质出版社, 2012: 464–466
SHAO Juenian, TAO Weiping. Manual of Industrial Requirements for Mineral Resources[S]. Geological Publishing Housing, Beijing, 2012: 464–466.
台官涛. 河南省方城县里银子沟透辉石矿成矿远景分析[J]. 产业科技创新,2019,1(2):15–17.
汪仁勇,吴桂捷. 宜昌透辉石矿床地质特征及其釉面砖工艺研究[J]. 矿床地质,1989,8(2):72–79.
王伟,刘继顺,何美香,等. 豫西金矿地质特征与构造控矿探讨[J]. 西北地质,2014,47(3):62–69. doi: 10.3969/j.issn.1009-6248.2014.03.010
王珍,刘纯. 透辉石在宝鸡建筑陶瓷业中的应用[J]. 非金属矿,2006,29(5):28–30.
席文祥. 河南省岩石地层[M]. 武汉: 中国地质大学出版社, 1997, 59–68
XI Wenxiang. Lithostratigraphy of Henan Province [M]. Wuhan: Chinese University of Geosciences Press, 1997, 59-68.
闫全人,王宗起,闫臻,等. 从华北陆块南缘大洋扩张到北秦岭造山带板块俯冲的转换时限[J]. 地质学报,2009,83(11):1565–1583.
杨素文,许小峰,王胜利,等. 宝鸡西山透辉石在陶瓷领域的应用效果[J]. 甘肃冶金,2015,37(5):62–65.
姚凤良, 孙丰月. 矿床学教程[M]. 北京: 地质出版社, 2006, 78–90
YAO Fengliang, SUN Fengyue. Course in Mineral Deposits[M]. Beijing: Geological Publishing Housing, 2006, 78–90.
袁见齐, 朱上庆, 翟裕生. 矿床学[M]. 北京: 地质出版社, 1985: 104–129
YUAN Jianqi, ZHU Shangqing, ZHAI Yusheng. Mineral Deposit Geology[M]. Beijing: Geological Publishing Housing, 1985, 104–129.
张国强,于政涛,刘东伟,等. 磐石圈岭透闪石矿床特征及开发前景[J]. 吉林地质,2005,24(2):35–40.
赵珊茸, 边秋绢, 凌其聪. 结晶学及矿物学[M]. 北京: 高等教育出版社, 2004, 346–364
ZHAO Shanrong, BIAN Qiujuan, LING Qicong. Crystallography and Mineralogy[M]. Beijing: Higher Education Press, 2004, 346–364.
朱嘉伟,赵盼舒,李锋. 华北陆块南缘金矿成矿动力学探讨[J]. 地球学报,2008,29(4):525–532.