Shafranovskite Mineral Data

General Shafranovskite Information
Chemical Formula:	K2Na3(Mn++,Fe++,Na)4[Si9(O,OH)27](OH)2•n(H2O), n~2.33
Composition:	Molecular Weight = 1,051.58 gm
	Potassium 6.62 % K 7.97 % K₂O
	Sodium 5.47 % Na 7.37 % Na₂O
	Calcium 0.15 % Ca 0.21 % CaO
	Magnesium 0.09 % Mg 0.15 % MgO
	Manganese 13.17 % Mn 17.00 % MnO
	Aluminum 0.31 % Al 0.58 % Al₂O₃
	Iron 3.35 % Fe 4.30 % FeO
	Silicon 24.04 % Si 51.42 % SiO₂
	Hydrogen 1.20 % H 10.74 % H₂O
	Oxygen 45.61 % O
	______ ______
	100.00 % 99.76 % = TOTAL OXIDE
Empirical Formula:	Na_2.5K_1.78Mn²⁺_2.52Fe²⁺_0.63Ca_0.04Mg_0.046(Al_0.02)Si₉O_23.71�6.27(H₂O)
Environment:	Produced by late-stage crystallization of alkalic nepheline syenite magmas in pegmatites in differentiated alkalic massifs. Hydrous manganese phyllosilicate.
IMA Status:	Approved IMA 1982
Locality:	On Mts. Rasvumchorr, Niorkpakhk, Koashkar, and Koashva, Khibiny massif, and at the Jubilee pegmatite, Mt. Karnasurt, and several other localities in the Lovozero massif, Kola Peninsula Link to MinDat.org Location Data.
Name Origin:	Named for Ilarion Ilarionovich Shafranovskii (1907-1994), mineralogist and crystallographer at the Mining Institute, St. Petersburg, Russia.
Name Pronunciation:	Shafranovskite + Pronunciation