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|System:||Hexagonal||Colour:||Yellow to orange-brown|
|Lustre:||Vitreous||Hardness:||3 - 3½|
A mineral with a fluorosulphate (FSO3)- anion.
Classification of Reederite-(Y)
|IMA status:||Approved 1994|
|Strunz 8th edition ID:||5/C.07-200|
|Nickel-Strunz 10th (pending) edition ID:||5.BF.20|
5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
F : With (Cl), SO4, PO4, TeO3
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Type Occurrence of Reederite-(Y)
|Type Locality:||Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada|
Physical Properties of Reederite-(Y)
|Colour:||Yellow to orange-brown|
|Hardness (Mohs):||3 - 3½|
Crystallography of Reederite-(Y)
Optical Data of Reederite-(Y)
|RI values:||nω = 1.548 nε = 1.537|
|Maximum Birefringence:||δ = 0.011|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Chemical Properties of Reederite-(Y)
|Simplified for copy/paste:||(Na,Mn)15Y2(CO3)9(FSO3)Cl|
|Essential elements:||C, Cl, F, Na, O, S, Y|
|All elements listed in formula:||C, Cl, F, Mn, Na, O, S, Y|
Relationship of Reederite-(Y) to other Species
|Related Minerals - Nickel-Strunz Grouping):|
Other Names for Reederite-(Y)
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Reederite-(Y)
Grice J D, Gault R A, Chao G Y (1995) Reederite-(Y), a new sodium rare-earth carbonate mineral with a unique fluorosulfate anion, American Mineralogist 80, 1059-1064.
Mineralogical Record: 27: 304-305.
Internet Links for Reederite-(Y)
Localities for Reederite-(Y)
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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New Locality Added: Bahleida occurrence, Crooks Township, Thunder Bay District, Ontario, CanadaFrom Reiner Mielke, 23rd Oct 2014 00:36:10