黄金急升突破4890美元，A股贵金属大爆发，紫金矿业大涨6%

Group 1 - Gold prices experienced a sudden surge, with spot gold reaching $4,890 per ounce and New York futures surpassing $4,900 per ounce [1] - Silver also saw significant gains, with spot silver increasing by 8% to $85 per ounce [1] Group 2 - The A-share precious metals sector rebounded strongly, with notable stock performances: Xiaocheng Technology up 17%, Hunan Gold hitting the daily limit, and Zijin Mining rising over 6% [3] - Other companies like Shandong Gold and Hengbang Shares saw their declines narrow to within 2% [3] Group 3 - Tianfeng Securities predicts that gold may enter a period of wide fluctuations in the short term but is expected to return to an upward trend within the year, supported by long-term demand from global central banks [5] - New Lake Futures also believes that medium to long-term support for gold prices remains, citing geopolitical risks and uncertainties in U.S. government policies as key factors [5]