摘要
西藏当雄县拉屋铜锌矿床位于冈底斯—念青唐古拉成矿带江让—伯舒拉岭多金属成矿亚带。从矿体地质特征、稳定同位素、稀土元素、微量元素地球化学特征等方面对其Ⅴ号矿体进行分析,研究后认为其成因应为岩浆矽卡岩型,其机制是深部熔浆在上侵过程中经分异作用,以钾、钠硅酸盐为主的熔浆浮于上部,以钙、镁、铁为主的熔浆(矽卡岩岩浆)沉于下部,从而形成含矿矽卡岩岩浆,进而形成岩浆矽卡岩矿床。
Lawu copper zinc ore deposit in Damxung County Tibet laid in the Jiangrang-Boshulaling polymetallic metallogenic subzone of the Gandise-Nyainqentanglha metallogenie belt. In lights of geological properties, stable isotope, rare earth elements, trace element geochemistry, the authors analyzed ore body V. It was concluded that the genesis was magmatic skarn type, the differentiation of deep magma during its upward invasion was the genetic mechanism, the inched lava dominated by K, Na silicates floated on the upper part, while the melted lava dominated by Ca, Mg and Fe （skarn magma） settled on the lower part, forming ore-bearing skam magma, and then magmatic skarn ore deposits.
出处
《地质学刊》
CAS
2013年第2期212-218,共7页
Journal of Geology
关键词
拉屋铜锌矿床
Ⅴ号矿体
岩浆矽卡岩
西藏当雄
Lawu copper-zinc deposit
Ore body V
Magmatic skarn
Damxung County
Tibet
