There is approximately 56-62.5 mol% of almandite and 31.7-41.5 mol% of pyrope in garnet with low CaO (0.65-1.76 mol%) and MnO (0.20-0.47 mol%); high-magnesium in biotite: Mg/(Mg+Fe) varies from 0.76 to 0.88, followed by TiO_2 (4.3 wt.
2.本区石榴石以含铁铝榴石分子为主(56-62.5%),镁铝榴石分子次之(31.7-41.5%),CaO和MnO的含量较低(CaO为0.65-1.76%,MnO为0.20-0.47%),属铝系石榴石。
参考来源 - 华北克拉通集宁地区孔兹岩系的岩石学和变质作用研究·2,447,543篇论文数据,部分数据来源于NoteExpress
N a deep yellowish-red garnet that consists of magnesium aluminium silicate and is used as a gemstone. Formula: Mg3Al2(SiO4)3 镁铝榴石
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