Yakovenchukite-(Y) Mineral Data

General Yakovenchukite-(Y) Information
Chemical Formula:	K3NaCaY2(Si12O30)•4H2O
Composition:	Molecular Weight = 1,256.79 gm
	Potassium 8.87 % K 10.68 % K₂O
	Sodium 3.20 % Na 4.32 % Na₂O
	Calcium 2.42 % Ca 3.39 % CaO
	Cerium 0.11 % Ce 0.13 % Ce₂O₃
	Dysprosium 0.65 % Dy 0.74 % Dy₂O₃
	Yttrium 12.17 % Y 15.45 % Y₂O₃
	Erbium 0.80 % Er 0.91 % Er₂O₃
	Thulium 0.13 % Tm 0.15 % Tm₂O₃
	Thorium 0.55 % Th 0.63 % ThO₂
	Ytterbium 1.38 % Yb 1.57 % Yb₂O₃
	Silicon 26.82 % Si 57.37 % SiO₂
	Hydrogen 0.52 % H 4.69 % H₂O
	Oxygen 42.38 % O
	______ ______
	100.00 % 100.03 % = TOTAL OXIDE
Empirical Formula:	K_2.85Na_0.15NaCa_0.71Na_0.6Y_1.72Yb_0.1Er_0.06Dy_0.05Th_0.03Ce_0.01Tm_0.01Ca_0.05Si₁₂O_30.02�3.27(H₂O)
Environment:	Low-temperature hydrothermal mineral, formed by alteration of earlier REE-rich minerals. New structure type with Si12O30 sheets with 4- ,6- and 14 member rings.
IMA Status:	Approved IMA 2006 (Dana # Added)
Locality:	Mt. Kukisvumchorr, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Name Origin:	Named for Victor N. Yakovenchuk, a mineralogist at the Geological Institute of the Kola Science Centre of the Russian Academy of Sciences.
Synonym:	IMA2006-002