Gmelinite-K Mineral Data

General Gmelinite-K Information
Chemical Formula:	(K,Na,Ca)6(Al7Si17O48)•22(H2O)
Composition:	Molecular Weight = 2,032.96 gm
	Potassium 6.25 % K 7.53 % K₂O
	Sodium 1.96 % Na 2.64 % Na₂O
	Calcium 1.12 % Ca 1.57 % CaO
	Aluminum 9.81 % Al 18.53 % Al₂O₃
	Silicon 23.62 % Si 50.54 % SiO₂
	Hydrogen 2.15 % H 19.19 % H₂O
	Oxygen 55.09 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	K_3.25Ca_0.57Na_1.73Al_7.39Si_17.1O_48.34•21.66(H₂O)
Environment:	Druzy cavities within brecciated pegmatite in alkaline rocks.
IMA Status:	Approved IMA 2001 (Dana # Added)
Locality:	Lovozero alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Name Origin:	Named after the German mineralogist and chemist, Christian Gottlob Gmelin (1792-1860) of Turbingen, Germany. The K-dominant member of the gmelinite series.
Name Pronunciation:	Gmelinite-K + Pronunciation
Synonym:	IMA1999-039