Bornemanite Mineral Data

General Bornemanite Information
Chemical Formula:	BaNa3{(Na,Ti)4[(Ti,Nb)2O2Si4O14](F,OH)2}•PO4
Composition:	Molecular Weight = 908.83 gm
	Potassium 0.43 % K 0.52 % K₂O
	Barium 10.58 % Ba 11.81 % BaO
	Sodium 13.66 % Na 18.41 % Na₂O
	Titanium 12.12 % Ti 20.22 % TiO₂
	Manganese 1.81 % Mn 2.34 % MnO
	Niobium 7.16 % Nb 10.24 % Nb₂O₅
	Silicon 12.36 % Si 26.44 % SiO₂
	Phosphorus 3.41 % P 7.81 % P₂O₅
	Hydrogen 0.08 % H 0.69 % H₂O
	Oxygen 37.15 % O
	Fluorine 1.25 % F 1.25 % F
	- % F -0.53 % -O=F₂
	______ ______
	100.00 % 99.21 % = TOTAL OXIDE
Empirical Formula:	Na_2.8Ba_0.7K_0.1Na_2.6TiMn²⁺_0.3Ti_1.3Nb_0.7O₂Si₄O_14.4(OH)_0.7F_0.6(PO₄)
Environment:	Late hydrothermal mineral.
IMA Status:	Approved IMA 1975
Locality:	Yubileinaya (Jubilee) alkalic pegmatite, Mt. Karnarsut, Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Name Origin:	Named or Irina Dimitrievna Borneman-Starynkevich (1890-), Russian mineralogist, Institute of Ore Deposits, Moscow. She was a student of the mineralogy of the Khibiny and Lovozero ma ssifs.
Name Pronunciation:	Bornemanite + Pronunciation