Charmarite-3T Mineral Data

General Charmarite-3T Information
Chemical Formula:	Mn++4Al2(CO3)(OH)12•3(H2O)
Composition:	Molecular Weight = 591.86 gm
	Manganese 37.13 % Mn 47.94 % MnO
	Aluminum 9.12 % Al 17.23 % Al₂O₃
	Hydrogen 3.07 % H 27.39 % H₂O
	Carbon 2.03 % C 7.44 % CO₂
	Oxygen 48.66 % O
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	Mn²⁺₄Al₂(CO₃)(OH)₁₂•3(H₂O)
Environment:	In silicate and carbonate cavities and in pegmatites in nepheline syenite. The Mn-dominant analogue of caresite and quintinite.
IMA Status:	Approved IMA 1995
Locality:	Mt. St.-Hilaire, QUE, Canada. Link to MinDat.org Location Data.
Name Origin:	Named for Charles (1917-) and Marcelle (1918-) Weber, amateur mineralogist of Guilford, CT, who contributed extensively to the knowledge of Mt. St.-Hilaire and also found the minera l.
Synonym:	IMA1992-027