Nioboaeschynite-(Ce) Mineral Data

General Nioboaeschynite-(Ce) Information
Chemical Formula:	(Ce,Ca)(Nb,Ti)2(O,OH)6
Composition:	Molecular Weight = 367.65 gm
	Calcium 3.27 % Ca 4.58 % CaO
	Cerium 22.87 % Ce 26.78 % Ce₂O₃
	Titanium 3.26 % Ti 5.43 % TiO₂
	Niobium 44.22 % Nb 63.26 % Nb₂O₅
	Hydrogen 0.27 % H 2.45 % H₂O
	Oxygen 26.11 % O
	______ ______
	100.00 % 102.50 % = TOTAL OXIDE
Empirical Formula:	Ce_0.6Ca_0.3Ti_0.25Nb_1.75O₅(OH)
Environment:	In placer concentrates from the Tofty tin belt.
IMA Status:	Approved IMA 1960
Locality:	Vishnevye Gory, Ural Mountains, Russia. Link to MinDat.org Location Data.
Name Origin:	Named from the composition and the Greek for "shame," in allusion to the inability of chemists, at the time of its discovery, to separate some of its constituents.
Synonym:	Aeschynite-(Ce)
	Niobo-aeschynite-(Ce) - Renamed Nioboaeschynite-(Ce) by Mineralogical Record, v39 (2008), p131