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Pretulite

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Höllkogel Mt., Alpl, Freßnitzgraben, Krieglach, Fischbacher Alpen Mts, Styria, Austria

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Formula:
Sc(PO
 
4
)
System:TetragonalColour:Pale pink, pale orange, ...
Lustre:AdamantineHardness:5
Member of:Xenotime Group
Name:For the mountain Pretul (1656 m), the second highest elevation in the Fischbacher Alpen Mts, in which the type locality is situated. Pretulite was first discovered at Fürstenbauer, located on the northwestern slope of Pretul Mt. However, the material from Höllkogel proved to be more suitable for the characterisation as a new species, so this was chosen as the type locality.


Xenotime group

Classification of Pretulite

IMA status:Approved 1996
Strunz 8th edition ID:7/A.14-05
Nickel-Strunz 10th (pending) edition ID:8.AD.35

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
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Type Occurrence of Pretulite

Type Locality:Höllkogel Mt., Alpl, Freßnitzgraben, Krieglach, Fischbacher Alpen Mts, Styria, Austria
Place of Conservation of Type Material:Naturhistorisches Museum, Vienna
Steiermärkisches Landesmuseum Joanneum, Graz
Year of Discovery:1996
Geological Setting of type material:Lazulite-quartz vein in quartz-rich phyllite

Occurrences of Pretulite

Geological Setting:Common accessory mineral in lazulite-quartz veins from Krieglach, Mürzzuschlag and also from southern Lower Austria;
in metamorphosed and hydrothermaly altered oolitic ironstones from St Aubin-des-Châteaux, Loire-Atlantique, Pays de Loire, France.

Physical Properties of Pretulite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent, Translucent
Colour:Pale pink, pale orange, dark orange
Streak:White
Hardness (Mohs):5
Tenacity:Brittle
Cleavage:Perfect
parallel to {100}
Fracture:Splintery
Density (calculated):3.71 g/cm3

Crystallography of Pretulite

Crystal System:Tetragonal
Cell Parameters:a = 6.585Å, c = 5.802Å
Ratio:a:c = 1 : 0.881
Unit Cell Volume:V 251.59 ų (Calculated from Unit Cell)

Optical Data of Pretulite

Type:Uniaxial (+)
RI values: nω = 1.790 nε = 1.860
Maximum Birefringence:δ = 0.070

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Pretulite

Formula:
Sc(PO
 
4
)
Essential elements:O, P, Sc
All elements listed in formula:O, P, Sc

Relationship of Pretulite to other Species

Member of:Xenotime Group
Other Members of Group:

- +
Related Minerals - Nickel-Strunz Grouping):

- +
8.AD.05Nahpoite
Na
 
2
HPO
 
4
8.AD.10Monetite
Ca(HPO
 
4
)
8.AD.10Weilite
Ca(HAsO
 
4
)
8.AD.10Švenekite
Ca(H
 
2
AsO
 
4
)
 
2
8.AD.15Archerite
(K,NH
 
4
)(H
 
2
PO
 
4
)
8.AD.15Biphosphammite
(NH
 
4
,K)(H
 
2
PO
 
4
)
8.AD.20Phosphammite
(NH
 
4
)
 
2
(HPO
 
4
)
8.AD.25Buchwaldite
NaCa(PO
 
4
)
8.AD.30Schultenite
Pb(HAsO
 
4
)
8.AD.35Chernovite-(Y)
Y(AsO
 
4
)
8.AD.35Dreyerite
Bi(VO
 
4
)
8.AD.35Wakefieldite-(Ce)
Ce(VO
 
4
)
8.AD.35Wakefieldite-(Y)
Y(VO
 
4
)
8.AD.35Xenotime-(Y)
Y(PO
 
4
)
8.AD.35Xenotime-(Yb)
(Yb,Y,HREE)(PO
 
4
)
8.AD.35Wakefieldite-(La)
La(VO
 
4
)
8.AD.40Pucherite
Bi(VO
 
4
)
8.AD.45Ximengite
Bi(PO
 
4
)
8.AD.50Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
8.AD.50Monazite-(Ce)
(Ce,La,Nd,Th)(PO
 
4
)
8.AD.50Monazite-(La)
(La,Ce,Nd)(PO
 
4
)
8.AD.50Monazite-(Nd)
(Nd,La,Ce)(PO
 
4
)
8.AD.50Rooseveltite
Bi(AsO
 
4
)
8.AD.50Cheralite
(Ca,Ce)(Th,Ce)(PO
 
4
)
 
2
8.AD.50Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
8.AD.50UM2005-35-VO:CaFePSiTh
(Th,Ca)(VO
 
4
,SiO
 
4
,PO
 
4
)
8.AD.55Tetrarooseveltite
Bi(AsO
 
4
)
8.AD.60Chursinite
(Hg
+
2
)
 
0.5
Hg
2+
 
(AsO
 
4
)
8.AD.65Clinobisvanite
Bi(VO
 
4
)

Other Names for Pretulite

Synonyms:
IMA1996-024
Other Languages:
German:Pretulit
Russian:Претулит
Spanish:Pretulita

Other Information

Fluorescence in UV light:Weak orange in SW
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 Pretulite

Reference List:

- +
F. Bernhard, F. Walter, K. Ettinger, J. Taucher & K. Mereiter (1998): "Pretulite, ScPO4, a new scandium mineral from the Styrian and Lower Austrian lazulite occurrences, Austria", American Mineralogist: 83: 625-630.

Canadian Mineralogist (2002): 40: 1657-1673.

Internet Links for Pretulite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Pretulite details from Handbook of Mineralogy (PDF)
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    • Localities for Pretulite

    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.
    Hide Locality List
    (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.
    Austria
     
    • Styria
      • Fischbacher Alpen Mts
        • Krieglach
          • Freßnitzgraben
            • Alpl
    		Bernhard, F. et al. (1998)
    unpublished; SEM-EDS on polished thin section by Franz Bernhard
    SEM-EDS on polished section, 15.1.2005, Franz Bernhard
    Bernhard, F. (1998): Paragenetische, mineralchemische und röntgenographische Daten von Bearthit vom Lazulithfundpunkt am Rotriegel, Freßnitzgraben bei Krieglach, Fischbacher Alpen, Steiermark. Mitteilungen der Abteilung für Mineralogie am Landesmuseum Joanneum, 62/63, 49-54.
    unpublished; SEM-EDS on polished thin sections by Franz Bernhard
          • Traibachgraben
            • Traibach
        • Mürzzuschlag
          • Hönigsberg
    		Bernhard, F. (2006)
          • Langenwang
            • Pretulgraben
    		unpublished; SEM-EDS on polished thin section by Franz Bernhard
      • Friedberg
    		Franz Bernhard, unpublished
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Žďár nad Sázavou
    		Novák, M.: Niobový a tantalový rutil – hojné variety rutilu. Minerál, 2004, roč. 12, č. 6, s. 428-431.
    France
     
    • Pays de Loire
      • Loire-Atlantique
        • Saint-Aubin-des-Châteaux
    		Moëlo, Y., Gloaguen, E., Lulzac, Y. (2006): III. Les minéraux de Saint-Aubin. Le Cahier des Micromonteurs, 1/2006, 13-25
    E. Gloaguen : "Original Mineralogical Features of a Hydrothermalized Oolitic Ironstone : The Deposit of Saint-Aubin-des-Châteaux (Armorican Massif, France)", 5th International Conference "Mineralogy & Museums", Paris, Sept. 5-8th 2004, Bull. de Liaison de la Soc. Franç. de Minéralogie et Cristallographie, 2004, Vol 16, N°2.
    Norway
     
    • Akershus
      • Eidsvoll (Eidsvold)
        • Minnesund
    		Rondeau, B., Fritsch, E., Peucat, J.-J., Nordrum, F.S. & Groat, L. (2008): Characterization of Emeralds from a historical deposit: Byrud (Eidsvoll), Norway. Gems & Gemology, 44, 108-122
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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 19:36:04
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