Manganilvaite Mineral Data

General Manganilvaite Information
Chemical Formula:	CaFe++Fe+++(Mn,Fe++)(Si2O7)O(OH)
Composition:	Molecular Weight = 407.15 gm
	Calcium 9.25 % Ca 12.95 % CaO
	Magnesium 0.30 % Mg 0.49 % MgO
	Manganese 10.39 % Mn 13.42 % MnO
	Aluminum 0.20 % Al 0.38 % Al₂O₃
	Iron 30.45 % Fe 21.70 % FeO / 19.41 % Fe₂O₃
	Silicon 13.80 % Si 29.51 % SiO₂
	Hydrogen 0.25 % H 2.21 % H₂O
	Oxygen 35.37 % O
	______ ______
	100.00 % 100.08 % = TOTAL OXIDE
Empirical Formula:	Ca_0.94Mn²⁺_0.06Fe²⁺_0.94Mg_0.05Fe³⁺_0.99Al_0.03Mn²⁺_0.71Fe²⁺_0.29(Si₂O₇)O(OH)
Environment:	Marble-hosted skarn-type orebodies at the Ossikovo and Mogilata deposits (Madan ore district) and the Govedarnika deposit (Laki district). Mn-dominant analogue of ilvaite.
IMA Status:	Approved IMA 2002 (Dana # Added)
Locality:	Pb-Zn skarn deposits in the Rhodope Mountains, Bulgaria Link to MinDat.org Location Data.
Name Origin:	Named as the Mn analogue of ilvaite with which it forms a continuous solid solution.
Synonym:	IMA2002-016