The remains of a gold mask are among a huge storage of 3,000-year-old artifacts found at an archaeological site in China''s Sichuan Province.Weighing about 280 grams(0.6 pounds)and estimated to be made from 84% gold,the ceremonial mask is one of over 500 items unearthed from six newly discovered"sacrificial pits (祭祀坑)",according to the country''s National Cultural Heritage Administration.
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