铁镁矿物，FeO和MgO的含量较高，SiO2含量较低。如橄榄石类、辉石类、角闪石类及黑云母类等。这类矿物的颜色较深，故又称深色或暗色矿物。
misc. sideromelane
一项针对近3.9万名女性的研究发现，从统计数据来看，多种维生素制剂、B族维生素、叶酸、以及铁、镁、铜等矿物元素都会增加过早死亡的风险。
A study involving nearly 39,000 women has found multivitamins, vitamin B, folic acid, iron, magnesium and copper all increased the statistical risk of premature death.
一项针对近3.9万名女性的研究发现，从统计数据来看，多种维生素制剂、B族维生素、叶酸、以及铁、镁、铜等矿物元素都会增加过早死亡的风险。
A study involving nearly 39, 000 women has found multivitamins, vitamin B, folic acid, iron, magnesium and copper all increased the statistical risk of premature death.
它是由镁，矽铁，它是一个成员橄榄石矿物家庭。
It is made of Magnesium and Iron Silicate, and it is a member of the Chrysolite mineral family.
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