Characteristics and geological significance of in-situ trace elements of sphalerite and in-situ sulfur isotope of the sulfides in the Zhuoma Pb-Zn deposit in Northwest Yunnan
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P578.2+3

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    Abstract:

    Zhuoma Pb-Zn deposit is located at the Zhongdian area on the western side of the Ganzi-Litang conjunction zone in northwest Yunnan. The ore is hosted in Zhuoma medium-acidic complex porphyry (porphyrite). Previous studies only focused on the ore bodies related to quartz-monzonite porphyry within the complex rock mass, but there is relatively little research on the ore bodies in quartz-diorite porphyrite. Based on mineralogical observations, in-situ trace elements analysis of sphalerite by laser ablation inductively coupled plasma mass spectrometer (LA-ICP-MS) was carried out. Combined with in-situ sulfur isotope analysis of pyrite, pyrrhotite, and sphalerite, it aims to determine the genetic type and ore-forming temperature of the deposit. The study found that sphalerite in the Zhuoma deposit is characterized relatively enriched Fe, Mn and depleted Cd, Ga, Ge, In and Sn. Among them, Fe, Mn, and Cd enter sphalerite in the form of solid solutions. Copper and Pb exist in the form of microscopic mineral inclusions, and indium exists in the form of micro-minerals combined with cadmium. The δ34S values of sulfides in this deposit ranges between -1.83‰ and +2.30‰. The Zn/Cd ratio of sphalerite ranges from 200 to 322, indicating a close relationship between the source of ore-forming materials and magmatism. The calculation results of the sulfur isotope equilibrium thermometer are from 271℃ to 517℃. The calculation results of the GGIMFis thermometer, the FAS thermometer and the FA6 thermometer for trace elements of sphalerite are 257±17~366±31℃, 234~296℃ and 245~311℃ respectively. Combined with the characteristics of trace elements ratios of sphalerite, it is considered that the precipitation of Pb-Zn ore-forming materials in the Zhuoma deposit occurs in a mesothermal environment. In the sphalerite trace elements ternary diagrams and t-SNE plot, most of the measured points fall within the area of the deposit type related to magmatic hydrothermal fluids. It is considered that the lead-zinc ore body produced on the top of the complex porphyry in the Zhoma deposit is a shallow-seated hydrothermal vein type. This study provides a geological and geochemical basis for understanding the genesis of lead-zinc ores and the exploration direction in the Zhongdian area.

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    Tong Qianming. 1986. Application examples of sphalerite-galena cadmium distributi楯猀琀爀礀?????匀甀瀀瀀氀????? ???椀渀??栀椀渀攀猀攀?眀椀琀栀??渀最氀椀猀栀?愀戀猀琀爀愀挀琀???戀爀?娀栀愀渀最?夀椀挀栀椀??夀甀??攀?愀渀搀??愀漀??椀愀渀栀甀椀??? ????刀攀猀攀愀爀挀栀?瀀爀漀最爀攀猀猀?漀昀?猀甀氀昀甀爀?愀渀搀?氀攀愀搀?椀猀漀琀漀瀀攀猀?愀渀搀?琀栀攀椀爀?愀瀀瀀氀椀挀愀琀椀漀渀?椀渀?猀甀氀昀椀搀攀?搀攀瀀漀猀椀琀猀嬀?崀???椀渀攀爀愀氀??砀瀀氀漀爀愀琀椀漀渀????????????縀?????椀渀??栀椀渀攀猀攀?眀椀琀栀??渀最氀椀猀栀?愀戀猀琀爀愀挀琀???戀爀?娀栀漀甀????夀愀渀最?娀??匀甀渀???匀???椀?攀琀?愀氀??椀???? ?????????倀??匀?琀爀愀挀攀?攀氀攀洀攀渀琀?愀渀愀氀礀猀椀猀?漀昀?猀瀀栀愀氀攀爀椀琀攀?愀渀搀?瀀礀爀椀琀攀?昀爀漀洀?琀栀攀??攀椀猀栀愀渀?倀戀?娀渀?漀爀攀?搀椀猀琀爀椀挀琀??猀漀甀琀栀??栀椀渀愀???洀瀀氀椀挀愀琀椀漀渀猀?昀漀爀?漀爀攀?最攀渀攀猀椀猀嬀?崀??伀爀攀??攀漀氀漀最礀?刀攀瘀椀攀眀猀???? ??? ??????戀爀?娀栀漀甀??椀愀砀椀???甀愀渀最?娀栀椀氀漀渀最??娀栀漀甀??甀漀昀甀???椀?攀琀?愀氀??椀????  ???吀栀攀?漀挀挀甀爀爀攀渀挀攀?猀琀愀琀攀猀?愀渀搀?爀攀最甀氀愀爀椀琀椀攀猀?漀昀?搀椀猀瀀攀爀猀攀搀?攀氀攀洀攀渀琀猀?椀渀?吀椀愀渀焀椀愀漀?倀戀?娀渀?漀爀攀?搀攀瀀漀猀椀琀???甀椀稀栀漀甀?倀爀漀瘀椀渀挀攀???栀椀渀愀嬀?崀???挀琀愀??椀渀攀爀愀氀漀最椀挀愀?匀椀渀椀挀愀????????????縀?? ??椀渀??栀椀渀攀猀攀?眀椀琀栀??渀最氀椀猀栀?愀戀猀琀爀愀挀琀???戀爀?娀栀漀甀?圀攀椀渀椀渀最???甀??椀渀戀愀漀?愀渀搀??椀??愀洀椀渀最????????吀礀瀀漀洀漀爀瀀栀椀挀?挀栀愀爀愀挀琀攀爀椀猀琀椀挀猀?漀昀?猀瀀栀愀氀攀爀椀琀攀?椀渀?吀漀渀最欀攀渀最??栀愀渀最瀀漀?洀椀渀攀?漀昀??愀挀栀愀渀最?漀爀攀?昀椀攀氀搀??甀愀渀最砀椀???栀椀渀愀嬀?崀???椀渀攀爀愀氀猀?愀渀搀?刀漀挀欀猀??????????縀????椀渀??栀椀渀攀猀攀?眀椀琀栀??渀最氀椀猀栀?愀戀猀琀爀愀挀琀???戀爀?娀栀甀??愀椀洀椀渀??夀甀愀渀??愀椀栀甀愀?愀渀搀??甀愀渀?匀栀椀眀攀椀????????吀礀瀀漀洀漀爀瀀栀椀挀?挀栀愀爀愀挀琀攀爀椀猀琀椀挀猀?愀渀搀?琀栀攀椀爀?猀椀最渀椀昀椀挀愀渀挀攀?漀昀?洀椀渀漀爀?攀氀攀洀攀渀琀猀?漀昀?猀瀀栀愀氀攀爀椀琀攀?昀爀漀洀??椀猀甀?愀渀搀??愀氀椀愀渀最稀椀?倀戀?娀渀?搀攀瀀漀猀椀琀猀??匀椀挀栀甀愀渀嬀?崀???挀琀愀??攀漀氀漀最椀挀愀?匀椀挀栀甀愀渀???????????縀????椀渀??栀椀渀攀猀攀?眀椀琀栀??渀最氀椀猀栀?愀戀猀琀爀愀挀琀???戀爀???伀??? ?????晎魥????屷?????讉孟?崀??????????晙??戀爀??????蠀?炞??鰀????? ??????煙?奲????詷????????倀??匀????祽腲寧{詷?葖????孎?崀?????????????????縀?????戀爀??林????????????????????葷?譨祗腲孟?崀??缀覉?智扛暖????????????縀????戀爀??鹏???栀?????卦???????  ????彎ぬ??晎魥??熐???豓????孾?崀?? ?暍??????????? ??縀?? ??戀爀??伀????言???罟劕?????? ????氀偢罛坧??汿????詷????????倀??匀????祽腲?????孎?崀???楷晲?????????????縀?????戀爀???襴??? ? ??餀?????兛????庑|??祓腲?繓???孟?崀??鄀坎こ?????????????縀? ???戀爀?娀?????????甀???????? ????鄀坎?蚏╞?醐???詷卞ā倰戀?????????楷?斍遧葮??孹?崀???晹聛?????????????? ?縀??????????戀爀?开睬???氀???????????? ?????置?卓魓?甀?倀戀?娀渀?詷???卭祏腲孟?崀????ふ???????????? ??縀?? ????戀爀??羑睰???螃襥????眀?????? ????鄀坎卓魓???詷ぞ??晓祛腲?s詷?孖?崀????ざ???? ???????? ?縀???????戀爀??????尀???踀华??????? ? ???荵?宂煲???詷????????倀??匀???????癓け???孎?崀???靔?晙晛?? ??晹????? ??????????縀???????戀爀???橢??? ?????置??煾???庑|詷葞?策譼?????豷?????????倀?匀??????孾?崀?? 晗??????????????縀?????戀爀???橢??倀????? ???????????葷?????倀??匀????ぽ??晓拏彛罬??公????ぷ葵???孾?崀?? ?暍??????? ????????縀???????戀爀???橢???瑟║??謀衳???????  ???鄀坎??ふ???酎????{酷?葜ぶ??晓祛腲???↖檞豗湔?酧???詷?譎孏?崀???楷晲?????????????縀?????戀爀?一??????????乮?????? ????餀???卢魓?????庑|祷腲??邍屮魯孒?崀??鄀坎こ?????????????縀?????戀爀?一內???需蝧???????????? ?????置?卓魓???庑|詷???卭祏腲?癸孺?崀???靔?晙晛?? ??晹???????鸀??????縀???戀爀?一??????橢??????????? ?????????葵v捺???癸?喏孜?崀???楷晲?????????????縀?????戀爀?一蝧????  ????晎魥?葟????湎?蕧?譙酗?????ⅷ譪字?崀????????ざ??晙??????戀爀?一蝧???謀????????????? ?????置??煾??詷???卭く??晓祛腲?s詷?孖?崀????晷???????????? 縀?????戀爀?一卧???退?????穧瞂?????? ????猀????邍????腎??筷譼?獓??晹?颕官?崀????晷????????????????縀??? ???戀爀???骔???????栀?鱛?????? ? ?????葷?攀ā?搀猀?轼皖鱑犘?????孓?崀????ざ???????????????縀???????戀爀??晒饛??? ????鄀坎??魔?灟??酧?譜???????n詷???塏?癸孺?崀????????ざ??晙??????戀爀??晒饛??一蝧????????? ????鄀坎卓魓??酷?卜??啷?倀戀琀葞?こ??晓祛腲孟?崀???楷??ぷ??晓???????????? ?縀?????戀爀??????豈????一?齑?????????????ぽ??晓孛?崀???????晹??????縀?????戀爀?戀????????????ぷ????貋譔魓?宋?崀?? ?ろ??晓??????縀???戀爀?氀厚????辐?????橢?????? ????嘀坮饓?????庑|ぷ?蒔?墍??????讉?癸孺?崀????晷??????? ????? ??縀??? ???戀爀?唀??????????掋???????  ???欀??????????屷??癸孺?崀?? ???邍????????????縀? ???戀爀?謀?躌???损???需?覑?????????????????悔?葏楶?慓????孒?崀???楷晲?????????????縀?????戀爀?謀晛????????s詷???豷???葷?????癓???? ?漏???癸孺?崀???|????????????縀????戀爀?屺?????????堀坮?????詷?????愀??渀ā????漀?一椀???葦?詷?潏孠?崀??嘀坮こ??????????縀???戀爀?屺????????????????????灼づ????钋?鹵譛孏?崀?? ???????????????縀????戀爀?謀?─??? ????鄀坎饓???????芔齓ぬ???ぷ??澀?遒孧?崀??????????晙??戀爀?謀?襑????甀????畲??? ???????詷?????搀???婓渀??搀?葐ぶ???孎?崀??缀?こ?????????????縀?? ??戀爀?謀衳????瑟║????橢??????  ????置???湵?酧???詷ぞ??晓???????季?崀???詷ぞ?????????????縀?????戀爀???睬??栀捔畫??????????? ????捺?庑蕜???蒖?腎?晹?颕官?崀????晷????????????????縀???????戀爀???扞??栀?蕎???蚌???? ????鄀坎饓????卓魓???庑|ぷ?禍腲孟?崀??鄀坎こ????????????縀????戀爀?栀?????鹏????碞橑??????  ???????鹸?熐屜?豵??????孾?崀?? ?晴????????????縀????戀爀???????????栀襧饳?????? ????鄀坎鱓??芀????庑|詷?????????孢?崀????晷???????????????縀???????戀爀??虦蝞???饢龙??挀??????? ????蔀饑楓?????詷???????祽腲?癓け???孎?崀????晷?????????????縀?????戀爀???????轔???庀?????? ?????敢?獠??庑|??邍??????颕官?崀?????晹???????????? ?縀?????戀爀??轟?????焀??? ???? ??晓孛?崀?????? ???????縀?? ??戀爀???縀????楟???????????  ????捒?????蒖?詷筞譼豗t楷?幎?孠?崀???詷ぞ??????????? ?縀?????戀爀??????????????????? ????堀坮鵓煛?????庑|詷?????ぽ??晓祛腲?癓陋??葷??孾?崀???????????????????縀???????戀爀??瑟║??????謀衳???????  ???鄀坎??卵魓????庑|詷ぞ?禍腲??卭?肋厈?敒?癸孺?崀???楷??ぷ??晓???????鸀????? ???戀爀??????夀?唀????杞??? ????欀?????癸?喏?癓?歗?楓?詷?葎鑶?孵?崀?????????????????縀?????戀爀?栀?鱛???窞饦??栀????????  ??????教???詷?捒???墍????讉孟?崀???楷晲?????????????縀?? ??戀爀?栀歔腓??蔀?鶑??一??????????缀罞?艙sぷ?冔?缀憕w????葷?譨祗腲?癸孺?崀???楷????????????縀????戀爀??噧???脀瞈乭???????????????閖????腙偨???詷蕞????????譨祗腲?癓?癸??孎?崀????そ?暍????????????縀???
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王乾鑫,冷成彪,李凯旋,王大钊,张兴春,2024,滇西北卓玛铅锌矿床成矿闪锌矿原位微量元素及硫化物原位硫同位素特征与地质意义[J].岩石矿物学杂志,43(6):1361~1379. WANG Qian-xin, LENG Cheng-biao, LI Kai-xuan, WANG Da-zhao, ZHANG Xing-chun,2024,Characteristics and geological significance of in-situ trace elements of sphalerite and in-situ sulfur isotope of the sulfides in the Zhuoma Pb-Zn deposit in Northwest Yunnan[J]. Acta Petrologica et Mineralogica,43(6):1361~1379.

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  • Received:April 15,2024
  • Revised:September 20,2024
  • Online: November 20,2024
  • Published: November 25,2024
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