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Håleniusite-(La)

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Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden
© L. Gustafsson

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Formula:
(La,Ce)OF
System:IsometricColour:lemon yellow to ochre ...
Name:Honouring Prof. Ulf Hålenius, Director of the mineralogy department at the Natural History Museum, Stockholm, Sweden.
Isostructural with:Fluorite
This page provides mineralogical data about Håleniusite-(La).

Classification of Håleniusite-(La)

IMA status:Approved 2003
Strunz 8th edition ID:3/A.08-25
Nickel-Strunz 10th (pending) edition ID:3.DE.05

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
E : With Rare-Earth Elements
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Type Occurrence of Håleniusite-(La)

Type Locality:Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden
General Appearance of Type Material:powdery masses
Year of Discovery:1986
Geological Setting of type material:in vugs and leaching zones of massive Ferriallanite-(Ce), intimately intergrown with Cerite-(Ce) and Bastnäsite-(La)
Associated Minerals at type locality:
QuartzMolybdeniteFerriallanite-(Ce)Cerite-(Ce)Brochantite
Bastnäsite-(La)Amphibole Group

Physical Properties of Håleniusite-(La)

Lustre:Dull, Earthy
Colour:lemon yellow to ochre yellow
Streak:light yellow
Density (measured):6.5 g/cm3

Crystallography of Håleniusite-(La)

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Im3m {I4/m 3 2/m}
Cell Parameters:a = 5.628Å
Unit Cell Volume:V 178.26 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
3.25 (100)
1.99 (60)
1.69 (45)

Chemical Properties of Håleniusite-(La)

Formula:
(La,Ce)OF
All elements listed in formula:Ce, F, La, O

Other Names for Håleniusite-(La)

Synonyms:
IMA2003-028
Other Languages:
Russian:Халениусит-(La)

Other Information

Fluorescence in UV light:none
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 Håleniusite-(La)

Reference List:

- +
D. Holtstam et al.: Can. Mineral. 42:1097-1103 (2004)

Internet Links for Håleniusite-(La)

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    • Localities for Håleniusite-(La)

    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.
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    (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.
    Sweden
     
    • Västmanland
      • Skinnskatteberg
        • Riddarhyttan
    		Holtstam, D., Grins, J. & Nysten, P. (2004): Håleniusite-(La) from the Bastnäs deposit, Västmanland, Sweden: A new REE oxyfluoride mineral species. Canadian Mineralogist, 42(4): 1097-1103
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    Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 18th Jun 2011 09:44:23
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