橄榄石
橄榄石是橄榄石矿物的宝石品种,由硅酸镁铁组成。由于铁的存在,它以其独特的石灰绿到橄榄绿的颜色而闻名。橄榄石形成于地幔深处,并通过火山活动带到地表。橄榄石的重要产地包括埃及、缅甸、巴基斯坦、坦桑尼亚和美国。
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