Parakeldyshite Mineral Data

General Parakeldyshite Information
Chemical Formula:	Na2ZrSi2O7
Composition:	Molecular Weight = 305.37 gm
	Sodium 15.06 % Na 20.30 % Na₂O
	Zirconium 29.87 % Zr 40.35 % ZrO₂
	Silicon 18.39 % Si 39.35 % SiO₂
	Oxygen 36.68 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Na₂ZrSi₂O₇
Environment:	As masses in nepheline syenite pegmatites which cut a foyaite.
IMA Status:	Approved IMA 1975
Locality:	Mt. Takhtarvumchorr and elsewhere in the Khibiny massif, and on Mt. Alluaiv and elsewhere in the Lovozero massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Name Origin:	Named from the Greek para, for near, and its relation to keldyshite.
Name Pronunciation:	Parakeldyshite + Pronunciation
Synonym:	ICSD 24866
	PDF 39-209