文档介绍：1000- 0569/2009/025( 10) - 2601- 14 Ac t a Pet r ol o gi ca Si ni ca 岩石学报
内蒙古阿鲁科尔沁旗敖仑花斑岩铜钼矿床成矿时代和
流体包裹体研究
舒启海蒋林赖勇”鲁颖淮
SHU Qi Hai ,JI ANG Li n,LAI Y0ng”a nd LU Yi ngHuai
北京大学造山带与地壳演化教育部重点实验室,北京100871
Key Laborat or y of Or oge n a nd Crus t Evol ut i on,Pek i ng Uni vers i t y,Bei j i ng 100871,Chi na
2009- 05- -07-01改回.
Shu QH,Ji ang L,Lai Y an d Lu ochr onol ogy an d f l ui d i ncl usi on s t udy of t he Aol un hua por phyr y Cu- Mo
de posi t i n Ar hor qi n Ar ea,I nner Mongol i a Pe t r ol ogi ca Si ni ca,25( 10) :2601— 2614
Abs t r a ct The Aol unhua Cu- Mo dep osi t i n Ar hor qi n Are a, Inne r Mongol i a ,l oc at ed i n t he Xi l a mul un Mo。me t al l o gen i c belt i n t he
nor t h er n ma r gi n of Nor t h Chi na Cr a t on,i s a t ypi ca l por phyr y Cu— Mo depos i t . Re- Os i sot op e dat i ng f or s i x mol ybdeni t e s ampl es gi ves an
i soch r on a ge of 12 - 4- 3 .4Ma,t hat i nd i cat es t he dep osi t f or me d i n t he ear l y hydr ot her ma l ore— formi ng pr oc ess co ul d
be di vi de d i nto t hr e e st a ges:t he ear l y st age i s cha r act e r i zed by mi ne r al as se mbl a ge s of quar t z- pyr i t e ve i ns wh i l e t he most i mpor t ant
st age ,t he mi ddl e st a ge,i s cha r act e r i zed by mi ne r al a ss embl ages of qua r t z- p ol ymet al l i c sul fi des ve i ns .Fl ui d i ncl us i ons i n mi ner al s
f ormed in ear l y and mi ddl e s t ages yi el d homogeneous t e mpe r at ur e s of 330~430℃and 250— 350℃.re spe ct i vel t h s ali ni t ies of
wt %一> wt %NaCl e qv and wt % wt %NaCl f l ui d i ncl us i ons wi t h cont r ast i ng s al i ni t i es ar e
homogeni ze d t o di ver gent pha ses a t si mi l a r t e mper at ur es,a nd da ught e r mi ner al — bea t i ng i ncl us i ons coexi s t wi t h t he vapor — and l i qui d— r i ch
f l ui d i ncl usi ons ,whi c h s t r ongl y sugg est s t hat f l ui d- boi l i ng ha ve oc cur r e d i n t h