CAJ | 학술논문

赣杭火山岩带中生代强烈的火山喷发及浅成-超浅成潜火山岩浆侵入，造就了火山-潜火山热液型铀矿床成矿作用。与潜火山岩具空间和成因关联、成矿作用受潜火山岩浆活动控制的铀矿床，应归属为潜火山岩型铀矿床。潜火山岩型铀矿床赋矿围岩以酸性潜火山岩为主，矿体形态主要为脉状，共伴生 Cu、Ag、Au 等元素，矿石金属矿物及围岩蚀变特征与我国东部潜火山岩型多金属矿床具相似性。火山-潜火山岩浆活动及分异演化完善，促使成矿物质在热液体系不断浓集及成矿流体演化，在成矿流体温度、压力、化学成分改变及气液沸腾机制作用下，铀在断裂构造及其旁侧裂隙构造、潜火山岩内外接触带及围岩裂隙密集带、隐爆角砾岩及其内发育的隐爆裂隙带等容矿构造空间内沉淀。
공항화산암대중생대강렬적화산분발급천성-초천성잠화산암장침입，조취료화산-잠화산열액형유광상성광작용。여잠화산암구공간화성인관련、성광작용수잠화산암장활동공제적유광상，응귀속위잠화산암형유광상。잠화산암형유광상부광위암이산성잠화산암위주，광체형태주요위맥상，공반생 Cu、Ag、Au 등원소，광석금속광물급위암식변특정여아국동부잠화산암형다금속광상구상사성。화산-잠화산암장활동급분이연화완선，촉사성광물질재열액체계불단농집급성광류체연화，재성광류체온도、압력、화학성분개변급기액비등궤제작용하，유재단렬구조급기방측렬극구조、잠화산암내외접촉대급위암렬극밀집대、은폭각력암급기내발육적은폭렬극대등용광구조공간내침정。
The intensive Mesozoic volcanic eruption and intrusion of the hypabyssal-super hypabyssal crypto-volcanic magma creates the mineralization of volcanic-cryptovolcanic hydrothermal type uranium deposits in Gan-Hang volcanic belt.The deposits may be cryptovolcanic type uranium deposits,because they are associ-ated with cryptovolcanic rocks in respects of space and genesis and their mineralization is controlled by cryp-tovolcanic magma activities.The ore-bearing wall rocks of the cryptovolcanic type uranium deposits are mainly acidic cryptovolcanic rocks.The orebodies predominant occur as veined in form and the associated ele-ments include Cu,Ag and Au.The metal minerals in ores and the characteristics of wall rock alternation are similar to those of cryptovolcanic-type polymetallic deposits in east China.The volcanic-cryptovolcanic mag-ma activity and the improvement of the differentiation facilitate the constant concentration of metallogenic materials and evolution of ore-forming fluid in the hydrothermal system.Under the alternation of the tem-perature,pressure and chemical component of the ore-forming fluid and the action of the gas-liquid boiling mechanism,the uranium precipitate inside the ore-bearing structures like the faulted structure and the frac-ture structure aside,inner and outer contact zones of cryptovolcanic rocks and the fissure concentrated zone in wall rocks,as well as cryptoexplosive breccia and the cryptoexplosive fissure zone developed inside it.