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Trögerite

Big Photo

Walpurgis Flacher vein, Weißer Hirsch Mine (Shaft 3), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany
© Stephan Wolfsried

Show Trögerite Photos (4)
Formula:
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
·12H
 
2
O (?)
System:TetragonalColour:Lemon-yellow
Hardness:2 - 3
Name:Named in 1871 after R. Tröger, mining administrator at Schneeberg, Saxony, Germany.


Autunite Group.

A secondary mineral usually found as crusts or aggregates of microscopic crystals. Often found growing in parallel with zeunerite.

Classification of Trögerite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/E.01-10
Nickel-Strunz 10th (pending) edition ID:8.EB.15

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
B : UO2:RO4 = 1:1
Dana 7th edition ID:40.2.20.1
Dana 8th edition ID:40.2a.20.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:20.7.1

20 : Arsenates (also arsenates with phosphate, but without other anions)
7 : Arsenates of U
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Type Occurrence of Trögerite

Type Locality:Walpurgis Flacher vein, Weißer Hirsch Mine (Shaft 3), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany
Place of Conservation of Type Material:Mining Academy, Freiberg, Germany: #21800. Harvard University, Cambridge, Massachusetts, USA: #106035.
Year of Discovery:1871
Geological Setting of type material:Oxidized zone of uranium deposit.
Associated Minerals at type locality:
ZeuneriteWalpurgiteUranospiniteUranosphaeriteUranospathite
ErythriteCobaltian WadAsselbornite

Occurrences of Trögerite

Geological Setting:A secondary mineral of uranium mineral deposits.

Physical Properties of Trögerite

Lustre:Vitreous, Waxy, Pearly
Diaphaneity (Transparency):Transparent
Comment:Lustre pearly on the {001} cleavage.
Colour:Lemon-yellow
Hardness (Mohs):2 - 3
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Perfect
Perfect on {001}, on {100}, good; on {011}, probable.
Fracture:Micaceous
Density (measured):3.3 g/cm3
Density (calculated):3.55 g/cm3

Crystallography of Trögerite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P4/nmm {P4/n 21/m 2/m}
Cell Parameters:a = 7.16Å, c = 8.8Å
Ratio:a:c = 1 : 1.229
Unit Cell Volume:V 451.14 ų (Calculated from Unit Cell)
Z:1
Morphology:Elongated thin tabular {001}, often composite and uneven; nonpinacoidal forms asymmetrically developed, impying a Monoclinic symmetry; other faces small and striated horizontally. Found as crusts or aggregates of microscopic crystals, often found growing in parallel with zeunerite.
Twinning:None reported.

Epitaxial Relationships of Trögerite

Epitaxial Minerals:
Zeunerite
Epitaxi Comments:Zeunerite crystals commonly occur overgrowing Trögerite in parallel position.
X-Ray Powder Diffraction:
d-spacingIntensity
8.59(100)
5.50(70)
4.35(70)
3.79(90)
3.30(80)
2.70(70)
2.19(70)

Optical Data of Trögerite

Type:Uniaxial (-)
RI values: nα = 1.584 - 1.600 nβ = 1.620 - 1.630 nγ = 1.623 - 1.630 nω = 1.642 nε = 1.580 - 1.582
Maximum Birefringence:δ = 0.062

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Pleochroism:Visible
Comments:O = Y = Z = Lemon-yellow
E = X = Nearly colourless
Comments:May be biaxial -, probably anomalous, zoned due to differences in H2O content.

Chemical Properties of Trögerite

Formula:
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
·12H
 
2
O (?)
Essential elements:As, H, O, U
All elements listed in formula:As, H, O, U
Analytical Data:Reversible H2O content.
Relationship of Trögerite to other Species
Related Minerals - Nickel-Strunz Grouping):

- + 
8.EB.05Autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
·11H
 
2
O
8.EB.05Heinrichite
Ba(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·10H
 
2
O
8.EB.05Kahlerite
Fe(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·12H
 
2
O
8.EB.05Nováčekite-I
Mg(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·12H
 
2
O
8.EB.05Saléeite
Mg(UO
 
2
)
 
2
(PO
 
4
)
 
2
·10H
 
2
O
8.EB.05Torbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
·12H
 
2
O
8.EB.05Uranocircite
Ba(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 10H
 
2
O
8.EB.05Uranospinite
Ca(UO
 
2
)(AsO
 
4
)
 
2
·10H
 
2
O
8.EB.05Xiangjiangite
(Fe
3+
 
,Al)(UO
 
2
)
 
4
[OH|(SO
 
4
)
 
2
|(PO
 
4
)
 
2
] · 22H
 
2
O
8.EB.05Zeunerite
Cu(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·12H
 
2
O
8.EB.05UM1997-18-AsO:HNiU
Ni(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·6-8H
 
2
O
8.EB.05Metarauchite
Ni(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·8H
 
2
O
8.EB.10Bassetite
Fe
2+
 
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Lehnerite
Mn
2+
 
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Meta-autunite
Ca(UO
 
2
)
 
2
[PO
 
4
]
 
2
· 6-8H
 
2
O
8.EB.10Metasaléeite
Mg(UO
 
2
)(PO
 
4
)
 
2
·8H
 
2
O
8.EB.10Metauranocircite
Ba(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 7H
 
2
O
8.EB.10Metauranospinite
Ca(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Metaheinrichite
Ba(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Metakahlerite
Fe
2+
 
(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Metakirchheimerite
Co(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Metanováčekite
Mg(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 4-8H
 
2
O
8.EB.10Metatorbernite
Cu(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Metazeunerite
Cu(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
8.EB.10Przhevalskite
Pb
 
2
(UO
 
2
)
 
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 3H
 
2
O
8.EB.10Meta-lodèvite
8.EB.15Abernathyite
K
 
2
(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 6H
 
2
O
8.EB.15Chernikovite
(H
 
3
O)
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
8.EB.15Meta-ankoleite
K
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
8.EB.15Natrouranospinite
(Na
 
2
,Ca)(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 5H
 
2
O
8.EB.15Uramphite
(NH
 
4
)
 
2
(UO
 
2
)
 
2
[PO
 
4
]
 
2
 · 6H
 
2
O
8.EB.15Uramarsite
(NH
 
4
,H
 
3
O)
 
2
(UO
 
2
)
 
2
[(AsO
 
4
,PO
 
4
)]
 
2
 · 6H
 
2
O
8.EB.20Threadgoldite
Al(UO
 
2
)
 
2
[OH|(PO
 
4
)
 
2
] · 8H
 
2
O
8.EB.20Chistyakovaite
Al(UO
 
2
)
 
2
[(F,OH)|(AsO
 
4
)
 
2
] · 6.5H
 
2
O
8.EB.25Arsenuranospathite
HAl(UO
 
2
)
 
4
(AsO
 
4
)
 
4
·40H
 
2
O
8.EB.25Uranospathite
Al
 
1-x
[]
 
x
)[(UO
 
2
)(PO
 
4
)]
 
2
(H
 
2
O)
 
20+3x
F
 
1-3x
, (0 < x < 0.33) 
8.EB.30Vochtenite
(Fe
2+
 
,Mg)Fe
3+
 
(UO
 
2
)
 
4
[OH|(PO
 
4
)
 
4
] · 12-13H
 
2
O
8.EB.35Coconinoite
Fe
3+
2
Al
 
2
(UO
 
2
)
 
2
[(OH)
 
2
|SO
 
4
|(PO
 
4
)
 
4
] · 20H
 
2
O
8.EB.40Ranunculite
HAlUO
 
2
PO
 
4
(OH)
 
3
·4H
 
2
O
8.EB.45Triangulite
Al
 
3
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH)
 
5
·5H
 
2
O
8.EB.50Furongite
Al
 
13
(UO
 
2
)
 
7
(PO
 
4
)
 
13
(OH)
 
14
 · 58H
 
2
O
8.EB.55Sabugalite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
·16H
 
2
O
Related Minerals - Hey's Index Grouping:

- + 
20.7.2Natrouranospinite
(Na
 
2
,Ca)(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 5H
 
2
O
20.7.3Abernathyite
K
 
2
(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 6H
 
2
O
20.7.4Metazeunerite
Cu(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
20.7.5Zeunerite
Cu(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·12H
 
2
O
20.7.6Metanováčekite
Mg(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 4-8H
 
2
O
20.7.7Nováčekite-I
Mg(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·12H
 
2
O
20.7.8Arsenuranylite
Ca(UO
 
2
)
 
4
[(OH)
 
2
|AsO
 
4
]
 
2
 · 6H
 
2
O
20.7.9Metauranospinite
Ca(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
20.7.10Uranospinite
Ca(UO
 
2
)(AsO
 
4
)
 
2
·10H
 
2
O
20.7.11Metaheinrichite
Ba(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
20.7.12Heinrichite
Ba(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·10H
 
2
O
20.7.13Metalodèvite
Zn(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 10H
 
2
O
20.7.14Arsenuranospathite
HAl(UO
 
2
)
 
4
(AsO
 
4
)
 
4
·40H
 
2
O
20.7.15Hallimondite
Pb
 
2
(UO
 
2
)[AsO
 
4
]
 
2
 · nH
 
2
O, 0 ≤ n ≤ 0.5
20.7.16Hügelite
Pb
 
2
(UO
 
2
)
 
3
[O|AsO
 
4
]
 
2
 · 5H
 
2
O
20.7.17Asselbornite
Pb(UO
 
2
)
 
4
(BiO)
 
3
(AsO
 
4
)
 
2
(OH)
 
7
·4H
 
2
O
20.7.18Metakahlerite
Fe
2+
 
(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
20.7.19Kahlerite
Fe(UO
 
2
)
 
2
(AsO
 
4
)
 
2
·12H
 
2
O
20.7.20Metakirchheimerite
Co(UO
 
2
)
 
2
[AsO
 
4
]
 
2
 · 8H
 
2
O
Other Names for Trögerite
Synonyms:
Troegerite
Other Languages:
German:Trögerit
Spanish:Trögerita
Other Information
Fluorescence in UV light:Lemon-yellow (UV).
Other Information:Soluble in acids.
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 Trögerite
Reference List:Weisbach A. (1871), Vorläufige Mittheilung [Über Trögerit und Walpurgin].- Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, 869-870.



Schrauf (1872) Mineralogische und petrographische Mitteilungen, Vienna: 185.



Weisbach A. (1873), Neue Uranerze von Neustädtel bei Schneeberg.- Jahrbuch für das Berg- und Hüttenwesen im Königreiche Sachsen, Abhandlungen, 119-121.



Winkler (1873) Journal für praktische Chemie, Leipzig: 7: 7.



Goldschmidt (1899) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 31: 468.



Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 145



Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 966-967 (as Troegerite).



American Mineralogist (1953): 38: 1159-1168.



Weiss, A., F. Taborszky, K. Hartl, and E. Tröger (1957) Zur Kenntnis des Uranminerals Trögerit. Zeits. Naturforsch., 12b, 356–358.



Frondel, C. (1958) Systematic mineralogy of uranium and thorium. U.S. Geological Survey Bull. 1064, 187–191.



American Mineralogist (1965): 50: 1-12.



Doklady Akademii Nauk SSSR (1971): 197E: 109-111 (178-181).



Gaines, Richard V., H. Catherine, W. Skinner, Eugene E. Foord, Brian Mason, Abraham Rosenzweig (1997), Dana's New Mineralogy : The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana: 777.
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    Localities for Trögerite
    






    


    

    
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    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality. 
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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.

    Canada
     
    

    • British Columbia
    

      • Slocan Mining Division
    

        • Sandon
    
    		No reference listed
    Czech Republic
     
    

    • Bohemia (Böhmen; Boehmen)
    

      • Central Bohemia Region
    
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    


      • Karlovy Vary Region
    

        • Krušné Hory Mts (Erzgebirge)
    

          • Ostrov
    
    		Lapis 2002(7/8), 63-65
    


      • Liberec Region
    

        • Harrachov (Harrachsdorf)
    
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    


Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172. 
    

    • Moravia (Mähren; Maehren)
    

      • Olomouc Region
    

        • Javorník
    
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    France
     
    

    • Languedoc-Roussillon
    

      • Hérault
    

        • Lodève
    
    		[Le Règne Minéral 1997, 13, p.5-18]
    



Le Règne Minéral, Hors Série IV (1998)
    Germany
     
    

    • Saxony
    

      • Erzgebirge
    

        • Johanngeorgenstadt District
    
    		Wittern: "Mineralfundorte in Deutschland", 2001
    



        • Schneeberg District
    

          • Neustädtel
    
    		S Wolfsried collection
    




Lapis 30(7/8):41-70 (2005)
    





            • Weißer Hirsch Mine (Shaft 3)
    
    		A. Weisbach (1871): Vorläufige Mittheilung [Über Trögerit und Walpurgin].- Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, 869-870; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 967, 991.
    

    • Thuringia
    

      • Gera
    

        • Ronneburg U deposit
    
    		T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
    Kazakhstan
     
    

    • Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast')
    

      • Balqash (Balkhash; Karatas; Prebalkhashie) Region
    

        • Chu-Ili Mts
    

          • Alakol' Lake
    
    		Chukanov, N. V., Sidorenko, G. A., Naumova, I. S., Zadov, A. E., Kuz’min, V. I. (2006): Chistyakovaite, a new mineral Al(UO2)2(AsO4)2(F,OH)·6.5H2O. Transactions (Doklady) of the Russian Academy of Sciences/Earth Science Section 407, 290-293
    Slovakia
     
    

    • Košice Region
    

      • Eastern Slovenské Rudohorie Mts
    

        • Hnilec
    
    		Koděra,  M.  et al., 1986 a  1990 : Topografická mineralógia Slovenska, diel  1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    


Koděra,  M.  et al., 1986 a  1990 : Topografická mineralógia Slovenska, diel  1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    UK
     
    

    • England
    

      • Cornwall
    

        • St Just District
    

          • Botallack - Pendeen Area
    

            • Botallack
    
    		[Journal of the Russell Society, 6(1), 17-26 (1995)]
    USA
     
    

    • Oregon
    

      • Lake Co.
    

        • Lakeview
    
    		www.cannonmicroprobe.com/Mineral_Specimens.htm 
    

    • South Dakota
    

      • Lawrence Co.
    
    		SDSMT Bull 18 Roberts and Rapp "Mineralogy of the Black Hills"
    

    • Wyoming
    
    		USGS 1970 PP495-C  Cenozoic geology of the Granite Mountains area, central Wyoming
    

    


    

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