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Trögerite

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Formula:
(H3O)(UO2)(AsO4) · 3H2O
There is a considerable confusion in the literature in distinguishing amongst two independent species, (meta)hydroniumuranospinite (structure based upon autunite topology), and trögerite (structure based upon different topology, as indicated by U:As ratio equal 3:2, c.f. original description by Weissbach 1873). Locock et al. (2004) introduced a misleading assignment of trögerite to the autunite group, with the composition (H3O)2[(UO2)2(AsO4)2](H2O)6. Chernorukov et al. (2011) synthesized compound of the composition (UO2)3(AsO4)2(H2O)12, which they equalized with trögerite. Structural investigations of Locock and Burns (2002) on synthetic (UO2)3(PO4)2(H2O)4, which is based on uranophane topology, suggests, that trögerite may be based on similar topology, having a framework structure with uranium located both on sheets as well as in interlayer, similarly as e.g. phosphuranylite (Demartin et al. 1991). The chemical composition of trögerite given in original description by Weissbach (1873) suggests that these two substances are not same mineral. Recently electron microanalysis of the type material of trögerite documented neither presence of trögerite on it nor the presence of (H3O)2[(UO2)2(AsO4)2](H2O)6. All analyzed crystals belong to nováčekite (Plášil et al. in prep.)
Colour:
Lemon-yellow, to deep yellow
Lustre:
Sub-Vitreous, Waxy, Pearly
Hardness:
2 - 3
Specific Gravity:
3.3 - 3.55
Crystal System:
Tetragonal
Name:
Named by A. Weisbach in 1871 for "R. Troeger", possibly for Richard Otto Troeger [1838-1917], mining administrator at Schneeberg, Saxony, Germany. (The translation of 'Bergverwalter' (= mining administrator) may indicate a lesser position such as mine captain, mine superintendent, or shift boss.)
Autunite Group. Possibly the arsenate analogue of 'UM1963-03-PO:HU'. Compare 'Unnamed (Hydronium-uranyl arsenate)', a chemically similar phase.

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


Hide all sections | Show all sections

Classification of TrögeriteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.EB.15

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

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
20.7.1

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

Physical Properties of TrögeriteHide

Sub-Vitreous, Waxy, Pearly
Transparency:
Transparent, Translucent
Comment:
pearly on the {001} cleavage.
Colour:
Lemon-yellow, to deep yellow
Streak:
White to pale yellow
Hardness:
2 - 3 on Mohs scale
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {001}, on {100} good; on {011} poor or in traces.
Fracture:
Micaceous
Density:
3.3 - 3.55 g/cm3 (Measured)    4.80 g/cm3 (Calculated)
Comment:
D has been calculated up to 5.13 (HB v4). Discrepancy is unexplained.

Optical Data of TrögeriteHide

Type:
Uniaxial (-)
RI values:
nα = 1.585 nβ = 1.630 nγ = 1.630 nω = 1.580 nε = 1.620 - 1.624
Birefringence:
0.045
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v
Optical Extinction:
Anomalously biaxial, X=c, Z ^ a = 13°, 2° = very small nearly zero
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 TrögeriteHide

Formula:
(H3O)(UO2)(AsO4) · 3H2O

There is a considerable confusion in the literature in distinguishing amongst two independent species, (meta)hydroniumuranospinite (structure based upon autunite topology), and trögerite (structure based upon different topology, as indicated by U:As ratio equal 3:2, c.f. original description by Weissbach 1873). Locock et al. (2004) introduced a misleading assignment of trögerite to the autunite group, with the composition (H3O)2[(UO2)2(AsO4)2](H2O)6. Chernorukov et al. (2011) synthesized compound of the composition (UO2)3(AsO4)2(H2O)12, which they equalized with trögerite. Structural investigations of Locock and Burns (2002) on synthetic (UO2)3(PO4)2(H2O)4, which is based on uranophane topology, suggests, that trögerite may be based on similar topology, having a framework structure with uranium located both on sheets as well as in interlayer, similarly as e.g. phosphuranylite (Demartin et al. 1991). The chemical composition of trögerite given in original description by Weissbach (1873) suggests that these two substances are not same mineral. Recently electron microanalysis of the type material of trögerite documented neither presence of trögerite on it nor the presence of (H3O)2[(UO2)2(AsO4)2](H2O)6. All analyzed crystals belong to nováčekite (Plášil et al. in prep.)

Crystallography of TrögeriteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/nmm
Setting:
P4/nmm
Cell Parameters:
a = 7.16 Å, c = 8.80 Å
Ratio:
a:c = 1 : 1.229
Unit Cell V:
451.14 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Elongated thin tabular {001}, often composite and uneven; nonpinacoidal forms asymmetrically developed, implying 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 TrögeriteHide

Epitaxial Minerals:
ZeuneriteCu(UO2)2(AsO4)2 · 12H2O
Epitaxy Comments:
Zeunerite crystals commonly occur overgrowing Trögerite in parallel position.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.59(100)
5.50(70)
4.35(70)
3.79(90)
3.30(80)
2.70(70)
2.19(70)
2.01(70)
Comments:
ICDD 8-326 (synthetic)

Type Occurrence of TrögeriteHide

Place of Conservation of Type Material:
Mining Academy, Freiberg, Germany: #21800. Harvard University, Cambridge, Massachusetts, USA: #106035.
Geological Setting of Type Material:
Oxidised zone of a silver-nickel-arsenic-uranium deposit.
Associated Minerals at Type Locality:

Synonyms of TrögeriteHide

Other Language Names for TrögeriteHide

German:Trögerit
Simplified Chinese:砷铀云母
砷铀矿
Spanish:Trögerita
Traditional Chinese:砷鈾礦
砷鈾雲母

Common AssociatesHide

Associated Minerals Based on Photo Data:
Asselbornite3 photos of Trögerite associated with Asselbornite on mindat.org.
Metazeunerite2 photos of Trögerite associated with Metazeunerite on mindat.org.
Zeunerite2 photos of Trögerite associated with Zeunerite on mindat.org.
Uranophane2 photos of Trögerite associated with Uranophane on mindat.org.
Churchite-(Y)1 photo of Trögerite associated with Churchite-(Y) on mindat.org.
Strengite1 photo of Trögerite associated with Strengite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.EB.05AutuniteCa(UO2)2(PO4)2 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.EB.05HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
8.EB.05KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
8.EB.05Nováčekite-IMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
8.EB.05SaléeiteMg(UO2)2(PO4)2 · 10H2OMon. 2/m : P21/b
8.EB.05TorberniteCu(UO2)2(PO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05UranocirciteBa(UO2)2(PO4)2 · 10H2OTet.
8.EB.05UranospiniteCa(UO2)(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.05Xiangjiangite(Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2OTet.
8.EB.05ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
8.EB.05MetarauchiteNi(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.05RauchiteNi(UO2)2(AsO4)2 · 10H2OTric. 1 : P1
8.EB.10BassetiteFe2+(UO2)2(PO4)2 · 10H2OMon. 2/m
8.EB.10LehneriteMn2+(UO2)2(PO4)2 · 8H2OMon.
8.EB.10Meta-autuniteCa(UO2)2(PO4)2 · 6-8H2OTet. 4/mmm (4/m 2/m 2/m)
8.EB.10MetasaléeiteMg(UO2)2(PO4)2 · 8H2O
8.EB.10Metauranocircite-IBa(UO2)2(PO4)2 · 7H2OMon. 2 : P21
8.EB.10MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OTet. 4mm
8.EB.10MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetakirchheimeriteCo(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
8.EB.10MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetatorberniteCu(UO2)2(PO4)2 · 8H2OTet. 4/m : P4/n
8.EB.10MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
8.EB.10PrzhevalskitePb2(UO2)3(PO4)2(OH)4 · 3H2OOrth.
8.EB.10Meta-lodèviteZn(UO2)2(AsO4)2 · 10H2O
8.EB.15AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
8.EB.15Chernikovite(H3O)2(UO2)2(PO4)2 · 6H2OTet.
8.EB.15Meta-ankoleiteK2(UO2)2(PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Natrouranospinite(Na2,Ca)(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
8.EB.15Uramphite(NH4)2(UO2)2(PO4)2 · 6H2OTet.
8.EB.15Uramarsite(NH4,H3O)2(UO2)2(AsO4,PO4)2 · 6H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
8.EB.20ThreadgolditeAl(UO2)2(PO4)2(OH) · 8H2OMon.
8.EB.20ChistyakovaiteAl(UO2)2(AsO4)2(F,OH) · 6.5H2OMon.
8.EB.25ArsenuranospathiteAl[(UO2)(AsO4)]2F(H2O)20Orth. mm2 : Pnn2
8.EB.25Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)Orth. mm2 : Pnn2
8.EB.30Vochtenite(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2OMon.
8.EB.35CoconinoiteFe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2OMon.
8.EB.40RanunculiteHAl(UO2)(PO4)(OH)3 · 4H2OMon.
8.EB.45TrianguliteAl3(UO2)4(PO4)4(OH)5 · 5H2OTric.
8.EB.50FurongiteAl13(UO2)7(PO4)13(OH)14 · 58H2OTric. 1 : P1
8.EB.55SabugaliteHAl(UO2)4(PO4)4 · 16H2OMon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.7.2Natrouranospinite(Na2,Ca)(UO2)2(AsO4)2 · 5H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.3AbernathyiteK(UO2)(AsO4) · 3H2OTet. 4/mmm (4/m 2/m 2/m) : P4/ncc
20.7.4MetazeuneriteCu(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
20.7.5ZeuneriteCu(UO2)2(AsO4)2 · 12H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mmm
20.7.6MetanováčekiteMg(UO2)2(AsO4)2 · 8H2OTet. 4/m : P4/n
20.7.7Nováčekite-IMg(UO2)2(AsO4)2 · 12H2OTric. 1 : P1
20.7.8ArsenuranyliteCa(UO2)4(AsO4)2(OH)4 · 6H2OOrth.
20.7.9MetauranospiniteCa(UO2)2(AsO4)2 · 8H2OTet. 4/m : P42/n
20.7.10UranospiniteCa(UO2)(AsO4)2 · 10H2OTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
20.7.11MetaheinrichiteBa(UO2)2(AsO4)2 · 8H2OTet. 4mm
20.7.12HeinrichiteBa(UO2)2(AsO4)2 · 10H2OMon. 2/m
20.7.13MetalodèviteZn(UO2)2(AsO4)2 · 10H2OTet.
20.7.14ArsenuranospathiteAl[(UO2)(AsO4)]2F(H2O)20Orth. mm2 : Pnn2
20.7.15HallimonditePb2(UO2)(AsO4)2 · nH2O, 0 ≤ n ≤ 0.5Tric. 1 : P1
20.7.16HügelitePb2(UO2)3(AsO4)2O2 · 5H2OMon.
20.7.17AsselbornitePb(BiO)3(UO2)4(AsO4)2(OH)7·4H2OIso.
20.7.18MetakahleriteFe2+(UO2)2(AsO4)2 · 8H2OTric. 1 : P1
20.7.19KahleriteFe(UO2)2(AsO4)2 · 12H2OTet. 4/m : P42/n
20.7.20MetakirchheimeriteCo(UO2)2(AsO4)2 · 8H2OTric. 1 : P1

Fluorescence of TrögeriteHide

Lemon-yellow (UV).

Other InformationHide

Notes:
Soluble in acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TrögeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Weisbach A. (1871), Vorläufige Mitteilung [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.
Shchipanova, O. V.; Belova, L. N.; Pribytkov, P. V.; Katargina, A. P. (1971): Structure and diagnostics of troegerite and hydrogen-containing uranospinite. Doklady Akademii Nauk SSSR 197, 178-181 (in Russian). [English version: 109-111(?)]
American Mineralogist (1974): 59:763.
Journal of Crystal Growth (1983) 61:606
Gaines, Richard V., H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, Abraham Rosenzweig, and Vandall T. King (1997), Dana's New Mineralogy : The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana: 777.
Chernorukov, N. G.; Nipruk, O. V.; Knyazev, A. V.; Pykhova, Yu. P. (2011): Synthesis and study of uranyl arsenate (UO2)3(AsO4)2 12H2O. Russian Journal of Inorganic Chemistry 56, 163-167. [synth. trögerite]

Internet Links for TrögeriteHide

Localities for TrögeriteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • Queensland
    • Etheridge Shire
      • Georgetown
Hurtig, N. C., Heinrich, C. A., Driesner, T., Herrmann, W., Wall, V., & Mathison, I. (2014). Fluid evolution and uranium (-Mo-F) mineralization at the Maureen Deposit (Queensland, Australia): unconformity-related hydrothermal ore formation with a source in the volcanic cover Sequence. Economic Geology, 109(3), 737-773.
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)
        • Jáchymov District (St Joachimsthal)
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 (Jauernig)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
France
 
  • Occitanie
    • 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
 
  • Almaty Province (Almaty Oblysy; Almati Oblast')
    • Lake Alakol (Lake Aaköl)
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
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Rudawy Janowickie Mts
      • Jelenia Góra District
Siuda, R., Gołębiowska, B. (2003): Nowe dane o minerałach wietrzeniowych złoża Miedzianka-Ciechanowice w Rudawach Janowickich (Dolny Śląsk, Polska). Przegląd Geologiczny: 59(3): 226-252 (in Polish)
Russia
 
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Chitinskaya Oblast'
        • Krasnokamensk
Pavel M. Kartashov analytical data 2012
  • Far-Eastern Region
    • Magadanskaya Oblast'
      • Verkhne-Kalganinsky Massif
Krinov D.I., Azarova Y.V., Struzhkov S.F., Natalenko M.V., Radchenko Y.I. (2011) On the Discovery of Rooseveltite, Preisingerite, Troegerite, and Zeunerite In Bi-As-Cu-U-mineralization from the Oranzhevoye Ore Field, Verkhne-Kalganinsky Massif, Magadan Region, Russia. New Data on Minerals 46:20-24
Slovakia
 
  • Košice Region
    • Gelnica Co.
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    • Spišská Nová Ves Co.
      • Hnilec (Hniletz; Nyilas; Nagyhnilec)
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
Spain
 
  • Catalonia
    • Lleida (Lérida)
      • El Pallars Jussà
        • La Vall Fosca
          • La Torre de Cabdella (La Torre de Capdella)
            • Castell-estaó
http://mineralsabella.blogspot.de/2009/11/minerales-raros-de-uranio.html
UK
 
  • England
    • Cornwall
      • St Austell District
        • St Stephen-in-Brannel
          • St Stephen
Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
      • St Just
        • 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
Mineral and/or Locality  
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