中国地质
中國地質
중국지질
CHINESE GEOLOGY
2009年
5期
1099-1109
,共11页
沉积钒矿床%黑色岩系%钒赋存状态%中村银花%陕西山阳%秦岭造山带
沉積釩礦床%黑色巖繫%釩賦存狀態%中村銀花%陝西山暘%秦嶺造山帶
침적범광상%흑색암계%범부존상태%중촌은화%협서산양%진령조산대
sedimentary vanadium deposit%black rock series%mode of occurrence of vanadium%Zhongcun-Yinhua%Shanyang County in Shaanxi Province,Qinling erogenic belt
秦岭黑色岩系中带的钒矿构成超大型规模,中村-银花钒矿是大型钒矿的典型代表,产于下寒武统水沟口组中段硅质板岩-泥板岩-粘土质泥板岩岩性转换过渡层位中.矿石根据岩性划分为硅板岩型、粘土质泥板岩型和硅质泥板岩型3种类型.矿层延长及厚度稳定,V_2O_5品位为0.70%～1.17%.研究查明,钒与粘土质、泥质板岩密切相关,钒在粘土泥板岩中相对富集.钒与铝、钾、铁存在较密切的地球化学共生关系.钒以钒酸盐、磷酸盐及吸附状态存在于高岭石、水云母中.研究认为,含钒黑色岩系是扬子大陆向华北大陆俯冲启动下,于早寒武世扬子大陆北缘斜坡出现在拉伸裂谷式沉积环境,发育滞留深水环境下的炭-泥-灰-重晶石-硅质含钒沉积建造,含钒的炭质硅板岩-炭质泥板岩层具有热水沉积产物的特征.
秦嶺黑色巖繫中帶的釩礦構成超大型規模,中村-銀花釩礦是大型釩礦的典型代錶,產于下寒武統水溝口組中段硅質闆巖-泥闆巖-粘土質泥闆巖巖性轉換過渡層位中.礦石根據巖性劃分為硅闆巖型、粘土質泥闆巖型和硅質泥闆巖型3種類型.礦層延長及厚度穩定,V_2O_5品位為0.70%～1.17%.研究查明,釩與粘土質、泥質闆巖密切相關,釩在粘土泥闆巖中相對富集.釩與鋁、鉀、鐵存在較密切的地毬化學共生關繫.釩以釩痠鹽、燐痠鹽及吸附狀態存在于高嶺石、水雲母中.研究認為,含釩黑色巖繫是颺子大陸嚮華北大陸俯遲啟動下,于早寒武世颺子大陸北緣斜坡齣現在拉伸裂穀式沉積環境,髮育滯留深水環境下的炭-泥-灰-重晶石-硅質含釩沉積建造,含釩的炭質硅闆巖-炭質泥闆巖層具有熱水沉積產物的特徵.
진령흑색암계중대적범광구성초대형규모,중촌-은화범광시대형범광적전형대표,산우하한무통수구구조중단규질판암-니판암-점토질니판암암성전환과도층위중.광석근거암성화분위규판암형、점토질니판암형화규질니판암형3충류형.광층연장급후도은정,V_2O_5품위위0.70%～1.17%.연구사명,범여점토질、니질판암밀절상관,범재점토니판암중상대부집.범여려、갑、철존재교밀절적지구화학공생관계.범이범산염、린산염급흡부상태존재우고령석、수운모중.연구인위,함범흑색암계시양자대륙향화북대륙부충계동하,우조한무세양자대륙북연사파출현재랍신렬곡식침적배경,발육체류심수배경하적탄-니-회-중정석-규질함범침적건조,함범적탄질규판암-탄질니판암층구유열수침적산물적특정.
The Zhongcun-Yinhua superlarge vanadium deposit is a typical sedimentary vanadium deposit in the mesozone black rock series of Qinling region. The deposit occurs on the lithologic transitional horizon of siliceous slate- argillite- clayey argillite in Lower Cambrian Shueigoukou Formation. The vanadium ores are of three types,namely siliceous slate type,clayey argillite type and siliceous-argillite type. Strike extension and thickness of the ore bed are stable, and the V_2O_5 content of the ores is 0.70%-1.17%. Vanadium is closely related to clayey and politic slate and is relatively abundant in clayey argillite. There exists close geochemical paragenetic relationship between vanadium and aluminum, potassium and iron. Vanadium occurs in kaolinite and hydromica in the forms of phosphate, vanadate and adsorption. Studies have revealed that the vanadium -bearing black rock series was formed in a sedimentary environment of rift zone on the marginal continental slope of North Yangtze Plate in Lower Cambrian under the action of Yangtze Continent-North China Continent underthrust convergence. In the stagnant deep-water sedimentary environment there developed vanadium-bearing sedimentary formation of anthrinoid - lime -mud -barite-siliceous rock. Therefore, the vanadium -bearing sedimentary formation has the genetic characteristic of hot spring exhalative-sedimentary deposition.
