|Table of Contents|

Ore composition and hosting condition in the Jianchaling sulfide nickel deposit , Shaanxi province(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2005年第01期
Page:
34-38
Research Field:
Publishing date:

Info

Title:
Ore composition and hosting condition in the Jianchaling sulfide nickel deposit , Shaanxi province
Author(s):
WANG Rui-ting 1; 2; MAO Jing-wen1; 3; REN Xiao-hua2; WANG Jun-yi2; WANG Xiao-hong4
1. Faculty of geosciences and resources, China University of geosciences, Beijing 100083,China; 2. Bureau of geological exploration for non ferrous metals in northwest China, Xi’ an 710054,China; 3. Institute of mineral resources, Chinese Academy of geological sciences, Beijing 100037,China; 4. School of Earth Sciences and Resources Management, Chang’ an University, Xi’ an 710054,China
Keywords:
sulfide nickel deposit;  ore composition;  hosting condition;  Jianchaling
PACS:
P618.63
DOI:
-
Abstract:
On the basis of reserching in composition feature and existing phase of ores from the Jianchaling sulfide nickel de- posit by means of new and high-precision ICP-MS analysis technique, its mechanism and type of metallogenesis is futher studied with new thoughts and methods. The main composition of ore in the Jianchaling sulfide nickel deposit includes Ni, Cu,Co,Fe,S,PGE, and so on, its high Ni/Cu value and lower content of Cu,PGE indicate that the formation of the nickel deposit resulted from the evolution of high-Mg magma. The nickel deposit has two typed ores, the pyrrhotite-pentlandite type and pyrite-millerite-polydymite type, and the first type is predominant, which proved that the formation of the nickel deposit at least experienced the former magmatic metallogensis and the later hydrothermal metamorphism reconstructed met- allogensis two periods. Therefore, the deposit should be magma melt-hydrothermal reconstructed type. The nickel in ores exsist mostly by simple nickel minerals, such as pentlandite, violarite, millerite and polydymite, and its hosting condition is sulfide-, silisic-, and sulfate nickel three shapes. The first is dominant. During the intrusion process of the Jianchaling ultra- basic rock, the nickel deposit is formed inside or in the margin of rockbody in Neo-Proterozoic, and subsequently the gold deposit was formed in the contacting belt of rockbodies in the Indosinian-Yanshanian time companying the evolution and dif- ferentiation of magma. It is a metallogenic series that have inner genic relation in the uniform metallogenic system involved with mantle-sourced ultra-basic rock.

References:

[1] 王相 , 唐荣扬 , 李实 , 等. 秦岭造山与金属成矿[M] . 北京 :冶 金工业出版社 , 1996.
[2] 庞春勇 , 陈民扬. 煎茶岭地区同位素地质年 龄数据及其地质 意义[J] . 矿产与地质 , 1993 , 7(5):354 ～ 360.
[3] 王瑞廷. 煎茶岭 与金 川镍 矿床成 矿作 用比 较研 究[D] . 西 安 :西北大学 , 2002.
[4] 骆华宝 , 乔德武. 中国主要含镍岩体特征及其成因[J] . 岩石 矿物学杂志 , 1993 , 12(4):312 ～ 324.
[5] 张 国 伟 , 张 本 仁, 袁学 城 , 等. 秦 岭造 山 带 与 大 陆动 力 学 [M] . 北京 :科学出版社 , 2001.
[6] 任小华. 陕西煎茶岭金矿床 地质特征 及其成因 意义[J] . 矿 产与地质 , 2000 , 14(2):70 ～ 75.
[7] Marst on R J , Groves D I , H uds on D R, et al. Ni ckel s ulfide dep osi t s in West ern Aus t ralia :a review [J] . Econ Geol , 1981 , 76 :1330 ～ 1363.
[8] Eckst rand O R. The Dumont serpentinit e:a model f or cont rol of nickeliferious opaque mineral assemblage by alt erat ion react ions in ult ramafi c rocks[J] . Econ Geol , 1975, 70:183 ～ 201.
[9] Barnes S J , Zi ent ek M , S everson M J. Ni , Cu , Au and pl atinum- group el ement con tent s of s ulfides associat ed w ith int rapl at e magmati sm :a synthesis [J] . Canadian Jou rnal of Earth S ciences , 1997 , 34 :337 ～ 351.
[10] 王瑞廷 , 赫英 , 刘明武 , 等. 煎茶岭硫化镍矿床矿石地球化学 特征[J] . 地球学报 ,2002 , 23(6):535 ～ 540.
[11] 西 北有色地质勘查 局 711 总队. 陕西省略阳县煎 茶岭镍矿 床地质详查报告[R]. 陕西汉 中 :西 北有色 地质 勘查 局 711 总队 , 1995.
[12] 黄婉康 , 甘先平 , 单 祖翔 , 等. 陕 西煎茶岭矿区的岩石及成矿 时代研究[J] . 地球化学 , 1996 , 25(2):150 ～ 156.
[13] 王瑞廷 , 赫英 , 王新. 煎 茶岭大 型金矿 床成矿 机理探 讨[J] . 西北地质科学 , 2000 , 21(1):19 ～ 26.

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