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Shachang Fe deposit, Miyun Co., Beijing Municipality, China

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Algoma-type iron deposit, hosted in the Shachang Formation of the Archean Miyun Group, a sequence of biotite-pyroxene granulite intercalated with amphibolitic granulite. There are four members in the formation: A, B, C and D. The middle part of Member C consists of amphibolic pyroxene plagioclase gneiss and pyroxene plagioclase gneiss and contains two iron-bearing layers with more than 50 orebodies, that are up to 780 m long and up to 93 m thick. The bodies are stratiform, lenticular and lensoid; swelling, pinching out, branching and mingling along the strike and dip directions are very common. The mineral textures are hypidiomorphic or xenomorphic granular and granoblastic; the structures are banded, laminated, gneissic and massive.

Mineral List



21 entries listed. 11 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

- Baofeng Shen, Anmin Zhai, Chunliang Yang, and Xiulan Cao (2005): Temporal-spatial distribution and evolutional characters of Precambrian iron deposits in China. Geological Survey and Research 28(4), 196-206.

 
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