安徽地质
安徽地質
안휘지질
GEOLOGY OF ANHUI
2014年
1期
23-27
,共5页
岩石学特征%岩石地球化学%微量元素%稀土元素%成因类型%含金丰度
巖石學特徵%巖石地毬化學%微量元素%稀土元素%成因類型%含金豐度
암석학특정%암석지구화학%미량원소%희토원소%성인류형%함금봉도
petrological feature%petrogeochemistry%trace element%REE%genetic type
通过斜长角闪岩类岩石学特征，岩石地球化学特征、微量元素、稀土元素数据进行计算与分析，探讨了其成因类型及变质岩原岩恢复，属于中基性-中酸性火山岩。晓天火山沉积洼地中火山岩、火山碎屑岩在稀土元素特征曲线的相似性确定火山岩物源来源于基底岩系卢镇关岩群中基性-中酸性火山岩。根据斜长角闪岩、火山岩、火山碎屑岩含金丰度的研究，认为区内金矿床的成矿物质与卢镇关岩群中斜长角闪岩类岩石存在密切关系，其物源主要为卢镇关岩群中斜长角闪岩类。
通過斜長角閃巖類巖石學特徵，巖石地毬化學特徵、微量元素、稀土元素數據進行計算與分析，探討瞭其成因類型及變質巖原巖恢複，屬于中基性-中痠性火山巖。曉天火山沉積窪地中火山巖、火山碎屑巖在稀土元素特徵麯線的相似性確定火山巖物源來源于基底巖繫盧鎮關巖群中基性-中痠性火山巖。根據斜長角閃巖、火山巖、火山碎屑巖含金豐度的研究，認為區內金礦床的成礦物質與盧鎮關巖群中斜長角閃巖類巖石存在密切關繫，其物源主要為盧鎮關巖群中斜長角閃巖類。
통과사장각섬암류암석학특정，암석지구화학특정、미량원소、희토원소수거진행계산여분석，탐토료기성인류형급변질암원암회복，속우중기성-중산성화산암。효천화산침적와지중화산암、화산쇄설암재희토원소특정곡선적상사성학정화산암물원래원우기저암계로진관암군중기성-중산성화산암。근거사장각섬암、화산암、화산쇄설암함금봉도적연구，인위구내금광상적성광물질여로진관암군중사장각섬암류암석존재밀절관계，기물원주요위로진관암군중사장각섬암류。
Based on calculation and analysis of petrological features, petrogeochemical features, trace elements, REE data of amphibolites, this paper discussed the genetic type and parent rock reconstruction of metamorphic rock, and classified it into intermediate-basic to intermediate-acid volcanic rock. Due to similarity in REE characteristic curve, volcanic rock and volcaniclastic rock in the Xiaotian sedimentary depression are thought to have been sourced from basement rock series of the Luzhenguan group complex intermediate-basic to intermediate-acid rock. Based on study of gold abundance in amphibolite, volcanic rock and volcaniclastic rock, it is suggested that ore-forming material of gold deposit is closely related to amphibolites in the Luzhenguan group complex, with amphibolites as the major source material.
