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Hougou Mine, Xiaozhangjiakou gold field, Chicheng Co., Zhangjiakou Prefecture, Hebei Province, China

Latitude: 40°54'0"N
Longitude: 115°36'40"E
后沟金矿, 小张家口金矿田, 赤城县, 张家口市, 河北省, 中国

Alkaline complex-hosted gold deposit, occurring in the inner contact zone of an alkaline syenite that is overprinted by faults and fractures. The deposit is irregular and is concordant to the strike of the contact zone and the faults. Four deposition stages occur: (1) molybdenite-quartz, (2) quartz-pyrite, (3) base metallic sulphide, and (4) carbonate. Alteration includes epidote, chlorite, sericite, pyrite, and carbonate alterations. The gold deposition is interpreted as related to the shearing of the Archean Wulashan Group of metamorphic rocks. The deposit probably formed at about 80+/-5.6 Ma(?), based on the dating of sericite alteration.

Mineral List

Albite
Bornite
Calcite
Chalcocite
Chalcopyrite
'Chlorite Group'
Diopside
Epidote
Galena
'Garnet'
Gold
var: Electrum
Hematite
var: Specularite
Magnetite
Microcline
Molybdenite
Muscovite
var: Sericite

Pyrite
Pyrrhotite
Quartz
var: Chalcedony
Siderite
Sphalerite


24 entries listed. 18 valid minerals.

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References

Shuyuan Xiang, Yongxiang Fan, and Chunqing Yin (1991): A preliminary analysis of metallogenic features of the Hougou type gold deposit, Chicheng County, Hebei. Geology and Prospecting 27(3), 15-20.

Debao Mao (1992): Gold deposits association with alkaline igneous rocks. Geology and Prospecting 28(9), 13-17.

Rui Li (1992): Geological-geochemical features and metallogenic pattern of the Hougou gold deposit. Geology and Prospecting 28(3), 46-50.

Zhimin Chang and Yongcai Li (1995): Comprehensive geophysical and geochemical exploration model of Dongping-Hougou gold deposit. Geology and Prospecting 31(4), 39-46.

Xingwang Xu, Xinping Cai, Yulin Liu, and Baolin Zhang (2002): Laser probe 40Ar-39Ar ages of metasomatic K-feldspar from the Hougou gold deposit, northwestern Hebei Province, China. Science in China, Series D (Earth Sciences), 45(6), 559-564.

Nie, F.-J., Jiang, S.-H., and Liu Y. (2004): Intrusion-Related Gold Deposits of North China Craton, People's Republic of China. Resource Geology 54(3), 299-324.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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