Erionite-Na Mineral Data

General Erionite-Na Information
Chemical Formula:	(Na2,K2,Ca)2[Al4Si14O36]•15(H2O)
Composition:	Molecular Weight = 2,809.97 gm
	Potassium 2.78 % K 3.35 % K₂O
	Sodium 4.57 % Na 6.16 % Na₂O
	Calcium 0.16 % Ca 0.22 % CaO
	Magnesium 0.16 % Mg 0.26 % MgO
	Aluminum 7.27 % Al 13.73 % Al₂O₃
	Iron 0.04 % Fe 0.05 % FeO
	Silicon 28.26 % Si 60.45 % SiO₂
	Hydrogen 1.76 % H 15.77 % H₂O
	Oxygen 55.00 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Na_5.59K₂Ca_0.11Mg_0.18Fe²⁺_0.02Al_7.57Si_28.27O₇₂�24.6(H₂O)
Environment:	Occurs in volcanic and sedimentary rocks. Common in altered silicic tuff., especially in saline lacustrine deposits.
IMA Status:	Valid Species (Pre-IMA) 1898
Locality:	Durkee opal mine, Suayze Creek, near Durkee, Baker Co., Oregon, USA. Proposed new type-example: Cady Mountains, California. Link to MinDat.org Location Data.
Name Origin:	From the Greek for wool, in allusion to its white, fibrous, wool-like appearance. Na modifier added by zeolite nomenclatrue committee.
Name Pronunciation:	Erionite-Na