中国工程科学
中國工程科學
중국공정과학
ENGINEERING SCIENCE
2015年
2期
50-58
,共9页
长英质岩体%稀有金属%有色金属%岩石成因%小岩体
長英質巖體%稀有金屬%有色金屬%巖石成因%小巖體
장영질암체%희유금속%유색금속%암석성인%소암체
felsic rock mass%rare metal%non-ferrous metal%formation of rock%small rock mass
长英质岩体常赋含Cu、Mo、W、Sn、Nb、Ta而形成稀有及有色金属矿床,大多数富矿岩体都属于小岩体(面积<10 km2)。赋含铜钼矿的岩体中岩浆的SiO2、K2O、K2O/Na2O高有利于富集Mo;Al2O3、Fe2O3T、MgO、CaO含量高有利于富集Cu。赋含钨锡矿的岩体中岩浆的SiO2、K2O高有利于富集W;Al2O3、Fe2O3T、MgO、CaO含量高有利于富集Sn。赋含铌钽的岩体中岩浆中高Fe2O3T、低P2O5、富碱、高TiO2有利于Nb的富集。含Cu矿岩体基本都属I型花岗岩,而含Mo矿岩体属由I型到S型的过渡类型;赋含钨锡矿的岩体基本属于S型花岗岩;而赋含铌钽矿的长英质岩体成因类型复杂,I型、S型、A型花岗岩均有。
長英質巖體常賦含Cu、Mo、W、Sn、Nb、Ta而形成稀有及有色金屬礦床,大多數富礦巖體都屬于小巖體(麵積<10 km2)。賦含銅鉬礦的巖體中巖漿的SiO2、K2O、K2O/Na2O高有利于富集Mo;Al2O3、Fe2O3T、MgO、CaO含量高有利于富集Cu。賦含鎢錫礦的巖體中巖漿的SiO2、K2O高有利于富集W;Al2O3、Fe2O3T、MgO、CaO含量高有利于富集Sn。賦含鈮鐽的巖體中巖漿中高Fe2O3T、低P2O5、富堿、高TiO2有利于Nb的富集。含Cu礦巖體基本都屬I型花崗巖,而含Mo礦巖體屬由I型到S型的過渡類型;賦含鎢錫礦的巖體基本屬于S型花崗巖;而賦含鈮鐽礦的長英質巖體成因類型複雜,I型、S型、A型花崗巖均有。
장영질암체상부함Cu、Mo、W、Sn、Nb、Ta이형성희유급유색금속광상,대다수부광암체도속우소암체(면적<10 km2)。부함동목광적암체중암장적SiO2、K2O、K2O/Na2O고유리우부집Mo;Al2O3、Fe2O3T、MgO、CaO함량고유리우부집Cu。부함오석광적암체중암장적SiO2、K2O고유리우부집W;Al2O3、Fe2O3T、MgO、CaO함량고유리우부집Sn。부함니단적암체중암장중고Fe2O3T、저P2O5、부감、고TiO2유리우Nb적부집。함Cu광암체기본도속I형화강암,이함Mo광암체속유I형도S형적과도류형;부함오석광적암체기본속우S형화강암;이부함니단광적장영질암체성인류형복잡,I형、S형、A형화강암균유。
The felsic rock mass always enrich Cu,Mo,W,Sn,Nb,Ta ,then become an rare and non-ferrous metals deposit.Most of these rock masses are small(area<10 km2). High SiO2, K2O,K2O/Na2O are benefit of enriching Mo in the magma which rock mass enriches Cu,Mo;high Al2O3,Fe2O3T,MgO,CaO are benefit of enriching Cu in the magma which rock mass en-riches Cu,Mo.High SiO2,K2O are benefit of enriching W in the magma which rock mass en-riches W,Sn;high Al2O3,Fe2O3T,MgO,CaO are benefit of enriching Sn in the magma which rock mass enriches W,Sn.High Fe2O3T,alkali,TiO2 and low P2O5 are benefit of enriching Nb in the magma which rock mass enrich Nb,Ta. The enriching Cu of rock mass is S type granite, but the enriching Mo of rock mass is transiting from I type to S type granite;the enriching W, Sn of rock mass is S type granite;the enriching Nb,Ta of rock mass has A type,I type and S type granites.