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Tadzhikite-(Y)

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Formula:
(Ca,Ce)4(Ce,Y)2(Ti4+,Fe3+,Al)[B4Si4O22](OH)2
Colour:
Yellowish-brown to tan, beige, pale pink, white, colorless.
Lustre:
Vitreous
Hardness:
6
Crystal System:
Monoclinic
Name:
Named after its discovery locality.
Synonym:
A synonym of Tadzhikite-(Ce)
Misnomer for tadzhikite-(Ce), since Ce is the dominant REE, not Y (Oberti et al., 2002).

Originally reported from Dara-i-Pioz Glacier, Alayskiy (Alai) Range, Tien Shan Mts, Region of Republican Subordination, Tajikistan.




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References for Tadzhikite-(Y)Hide

Reference List:
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Efimov, Dusmatov, Alkhazov, Pudovkina, Kazakova (1970) Doklady Akademii Nauk SSSR: 195: 1190-1193.
Doklady Akademii Nauk SSSR, Earth Science Sections: 195: 136-139.
Transactions (Doklady) of the USSR Academy of Sciences, Earth Science Sections (1970): 195: 136.
American Mineralogist (1971): 56: 1838.
Soviet Physics, Doklady (1982): 27: 367.
American Mineralogist (1987): 72: 1031.
Canadian Mineralogist (1998): 36: 817-822.
Canadian Mineralogist (1999): 37: 1369.
American Mineralogist (1999): 84: 913-921.
Oberti, R., Della Ventura, G., Ottolini, L., Hawthorne, F.C., Bonazzi, P. (2002): American Mineralogist, 87, 745-752.

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