Porphyry Mo-(W-Sn-Bi) deposit, consisting of veins and stockworks in explosive breccia pipes. The main part of the deposit occurs in a pipe that is 350 to 400 m long and 40 to 90 m thick. The ore minerals occur as disseminations and in veinlets. The host rocks exhibit K feldspar, biotitie, silica, pyrite, beresite, zeolite, and propylite alterations. The deposit is related to Jurassic quartz diorite and quartz monzonite (K-Ar isotopic age: 146-168 Ma) and is controlled by EW-trending fault zones.
Ref.:
- http://wrgis.wr.usgs.gov/open-file/of03-220/DATABASE/lode_deposits.txt
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Map Reference: 40°20'40"N , 116°20'5"E
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