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Geological and geochemical features and genesis of Dongfengding gold deposit (PDF)

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

Issue:
2004年第03期
Page:
21-27
Research Field:
Publishing date:

Info

Title:
Geological and geochemical features and genesis of Dongfengding gold deposit
Author(s):
YAO Jing-xuan; YANG Yin-chuan
Shanxi S urvey Institute of Geophysics and Geochemistry , Shanxi Yuncheng 044004 , China
Keywords:
geological and geochemical feature ; genesis of gold deposit; Dongfengding gold deposit ; Shanxi
PACS:
P618.51
DOI:
-
Abstract:
Taershan-Erfengshan district , located at southern Shanxi Province , is an upwarping subunit in the Linfen basin, and bas an area of about 900 km2.The subunit was active in alkaline and subalkline magmatism during Mesozoic Yanshan period , and has a great potential for looking for gold deposits because the gold mineralization is widespread .The study on the Dongfengding gold deposit is essential in enlarging the size and perspective of the gold deposit.The veins of the Dongfengding gold deposit occur in faults, and the mineralization is of goldbearing quarts-sulfide-barite vein with strong alteration in wall-rocks.It is proposed in this paper that the mineralization resulted from anatexis magma according to the reatures of ore geology , geochemistry , mineral assemblage , lead and sulfur isotopes, mineralization age , compositions of inclusions in minerals and purity of gold.The mineralized solution was mixture of magmatic water and meteoric water , and the ore veins formed under the condition of 140～ 400 ℃ temperature and about 1.5 km depth.The manner of mineralization is injection type of gold-bearing hydrothermal solution at moderate temperature and moderate depht .

References:

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Memo

Memo:
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Last Update: 2004-09-20