[2] [2] Bosi F, Halenius U, D’Ippolito V, et al. American Mineralogist, 2012, 97(11-12): 1834.

[3] [3] Perinelli C, Bosi F, Andreozzi G B, et al. American Mineralogist, 2014, 99(4): 839.

[4] [4] Princivalle F, Della Giusta A, De Min A, et al. Mineralogical Magazine, 1999, 63(2): 257.

[5] [5] Uchida H. American Mineralogist, 2005, 90(11-12): 1900.

[6] [6] Schmocker U, Waldner F. Journal of Physics and Chemistry: Solid State Physics, 1976, 9: L235.

[7] [7] Lenaz D, Lughi V. American Mineralogist, 2017, 102(1-2): 327.

[8] [8] Ganesh I. International Materials Reviews, 2013, 58(2): 63.

[9] [9] Shen A H, Breeding M. Dino De Ghionno. 2004, 40（2）: 8.

[10] [10] Widmer R, Malsy A K, Armbruster T. Physics and Chemistry of Minerals, 2015, 42(4): 251.

[11] [11] Peretti A, Günther D. Contributions to Gemology, 2015, 11: 269.

[12] [12] Peretti A, Bieri W, Alessandri M. Contributions to Gemology, 2015, 11: 285.

[13] [13] Yamanaka T, Takeuchi Y. Zeitschrift Fur Kristallographie, 1983, 165(1-4): 65.

[14] [14] Redfern S A T, Harrison R J, Hugh St C O’Neill, et al. American Mineralogist, 1999, 84: 299.

[15] [15] Andreozzi G B, Princivalle F, Skogby H, et al. American Mineralogist, 2000, 85(9): 1164.

[16] [16] Martignago F, Andreozzi G B, Negro A D. American Mineralogist, 2006, 91(2-3): 306.

[17] [17] Verger L, Dargaud O, Rousse G, et al. Physics and Chemistry of Minerals, 2016, 43(1): 33.

[18] [18] D’Ippolito V, Andreozzi G B, Bersani D, et al. Journal of Raman Spectroscopy, 2015, 46(12): 1255.

[19] [19] Slotznick S P, Shim S H. American Mineralogist, 2008, 93(2-3): 470.