Wonesite Mineral Data

General Wonesite Information
Chemical Formula:	(Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2
Composition:	Molecular Weight = 403.47 gm
	Potassium 0.97 % K 1.17 % K₂O
	Sodium 2.28 % Na 3.07 % Na₂O
	Magnesium 13.25 % Mg 21.98 % MgO
	Aluminum 7.36 % Al 13.90 % Al₂O₃
	Iron 5.54 % Fe 7.12 % FeO
	Silicon 22.27 % Si 47.65 % SiO₂
	Hydrogen 0.37 % H 3.35 % H₂O
	Oxygen 45.60 % O
	Fluorine 2.35 % F 2.35 % F
	- % F -0.99 % -O=F₂
	______ ______
	100.00 % 99.60 % = TOTAL OXIDE
Empirical Formula:	Na_0.4K_0.1Mg_2.2Fe²⁺_0.4Al_1.1Si_3.2O₁₀(OH)_1.5F_0.5
Environment:	In metavolcanics with high Mg:Fe, moderate sodium, and very little calcium, metamorphosed at an estimated 535 deg. C.
IMA Status:	Approved IMA 1981
Locality:	From Norwich, Windsor Co., Vermont, and elsewhere in the Post Pond Volcanics, southwest corner of the Mt. Cube quadrangle, New Hampshire and Vermont, USA. Link to MinDat.org Location Data.
Name Origin:	Named for petrologist David R. Wones (1932-1984), Professor of Geology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
Name Pronunciation:	Wonesite
Synonym:	Natriumphlogopite
	Sodiumphlogopite