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Allanite-(Nd) from
Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden


06748770017836953457341.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
09300990017836935138228.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
04174490017363102443600.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
01564740017271950475508.jpg
Allanite-(Nd)

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
00801700017836934879645.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
06185270017836935117136.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
04174490017363102443600.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
06323910017363102442966.jpg
Allanite-(Nd)

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
06748770017836953457341.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
07753500017836953452281.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
08038410017363102448032.jpg
Allanite-(Nd), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
01564740017271950475508.jpg
Allanite-(Nd)

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
Locality type:Quarry
Classification
Species:Allanite-(Nd)
Formula:(CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH)
Comments:Allanite-(Nd) forms fine grained aggregates, veinlets and black rims within limoriite-(Y). Allanite-(Nd) formed as a result of the alteration of thalenite-(Y); during this alteration, Y and HREE from thalenite were incorporated into limoriite structure, while LREE was incorporated into Allanite-(Nd) Sometimes, allanite-(Nd) forms individual crystals gradually changing in composition from allanite-(Nd) to Nd-epidote from axial to marginal zones of crystals.
Confirmation
Validity:Valid - Type Locality
Associated Minerals:
Associates:Iimoriite-(Y)
Associated Minerals Based on Photo Data:
Iimoriite-(Y)11
Tengerite-(Y)5
Åskagenite-(Nd)4
Gadolinite-(Y)2
Thalénite-(Y)2
Keiviite-(Y)1
Allanite-(Y)1
Data
Mineral Data:Click here to view Allanite-(Nd) data
Locality Data:Click here to view Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
Photo GalleryView Gallery (5 photos)
Data Identifiers
Mindat Occurrence Record ID:730109
Long-form Identifier:1:3:730109:4
GUID (UUID V4):0
References
Jansson, Mikael (2001) Åskagens kvartsbrott (Torskebäckens kvartsbrott)
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 8. Mineralogical Magazine, 75 (2) 289-294 doi:10.1180/minmag.2011.075.2.289
Skoda, R., Cempirek, J., Filip, J., Novak, M., Veselovsky, F., Ctvrtlik, R. (2012) Allanite-(Nd), CaNdAl2Fe2+(SiO4)(Si2O7)O(OH), a new mineral from Askagen, Sweden. American Mineralogist, 97 (5) 983-988 doi:10.2138/am.2012.3936
Skřápková, Lenka; Cempírek, Jan; Škoda, Radek; Filip, Jan; Friis, Henrik; Bosi, Ferdinando (2025) First crystal structure description of allanite-(Y) from the type locality Åskagen, Värmland, Sweden: EPMA, Mössbauer, Raman and SC-XRD data. Mineralogical Magazine, 89 (1). 172-182 doi:10.1180/mgm.2025.20
 
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