Potassic-magnesiosadanagaite Mineral Data

General Potassic-magnesiosadanagaite Information
Chemical Formula:	(K,Na)Ca2(Mg,Fe++,Al,Ti)5[(Si,Al)8O22](OH)2
Composition:	Molecular Weight = 900.44 gm
	Potassium 3.26 % K 3.92 % K₂O
	Sodium 0.64 % Na 0.86 % Na₂O
	Calcium 8.90 % Ca 12.46 % CaO
	Magnesium 6.75 % Mg 11.19 % MgO
	Titanium 1.33 % Ti 2.22 % TiO₂
	Aluminum 8.24 % Al 15.57 % Al₂O₃
	Iron 9.30 % Fe 11.97 % FeO
	Silicon 18.71 % Si 40.04 % SiO₂
	Hydrogen 0.22 % H 2.00 % H₂O
	Oxygen 42.64 % O
	______ ______
	100.00 % 100.22 % = TOTAL OXIDE
Empirical Formula:	K_0.75Na_0.25Ca₂Mg_2.5Fe²⁺_1.5Al_0.75Ti_0.25(Si₆Al₂O₂₂)(OH)₂
Environment:	Banded skarns and recrystallized limestones. Original magnesiosadanagaite (IMA1982-102) was ranamed potassic-magnesiosadanagaite by IMA amphibole nomenclature committee.
IMA Status:	Approved IMA 1984
Locality:	Myojin Island, Ehime Prefecture, Japan. Link to MinDat.org Location Data.
Name Origin:	Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Synonym:	IMA1982-102
	Magnesiosadanagaite - 1982