褐帘石

褐帘石是一种富含稀土元素的绿帘石族副矿物，其标准化学式为A1A2M1M2M3(SiO4)(Si2O7)(O, F)(OH)。稀土元素主要占据A2位置。褐帘石可以控制岩石中90%以上的轻稀土。[5][6]

褐帘石
基本資料
類別双硅酸盐矿物
化学式(Ce,Ca,Y,La)2(Al,Fe+3)3(SiO4)3(OH)
IMA記號Aln[1]
施特龙茨分类9.BG.05b
晶体空间群P21/m
晶胞a = 8.927, b = 5.761
c = 10.15 [Å]; β = 114.77°; Z = 2
性質
莫氏硬度5.5–6
比重3.5–4.2
折射率nα = 1.715–1.791, nβ = 1.718–1.815, nγ = 1.733–1.822
双折射δ = 0.018–0.031
參考文獻[2][3][4]

参见

参考文献
  1. Warr, L.N. . Mineralogical Magazine. 2021, 85 (3): 291–320. Bibcode:2021MinM...85..291W. S2CID 235729616. doi:10.1180/mgm.2021.43 可免费查阅.
  2. Allanite-(Ce) （页面存档备份，存于）. Handbook of Mineralogy
  3. Allanite （页面存档备份，存于）. Mindat.org./
  4. Allanite （页面存档备份，存于）. Webmineral.
  5. Shen, Can; Shu, Zhengxiang; Gu, Xiangping; Dick, Jeffrey; Feng, Yuzhou; Zheng, Hui; Lu, Anhuai. . Mineralogical Magazine. 2022-02, 86 (1): 134–140. doi:10.1180/mgm.2021.106.
  6. Feng, Yuzhou; Chen, Huayong; Xiao, Bing; Chu, Gaobin; Zheng, Hui; Shen, Can. . Chinese Science Bulletin. 2023-04-01, 68 (10): 1217–1229. doi:10.1360/TB-2022-0862.
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