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Bergenite

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Formula:
Ca
 
2
Ba
 
4
(UO
 
2
)
 
9
(PO
 
4
)
 
6
O
 
6
· 16H
 
2
O
System:MonoclinicColour:Yellow
Name:Named in 1959 by Hans Wilhelm Bültemann and Gunter Harald Moh for the region near type locality Bergen, Saxony, Germany. The artificial compound was synthesized in 1956 by V. Ross and was called barium-phosphuranylite.
Isostructural with:Phosphuranylite
This page provides mineralogical data about Bergenite.

Classification of Bergenite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/E.07-60
Nickel-Strunz 10th (pending) edition ID:8.EC.40

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
C : UO2:RO4 = 3:2
Dana 8th edition ID:42.4.5.3

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq·xH2O
Hey's CIM Ref.:19.11.20

19 : Phosphates
11 : Phosphates of U
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Type Occurrence of Bergenite

Type Locality:Streuberg Quarry, Bergen, Bergen U deposit, Zobes-Bergen District, Vogtland, Saxony, Germany
Year of Discovery:1959

Physical Properties of Bergenite

Colour:Yellow
Density (calculated):4.82 g/cm3

Crystallography of Bergenite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 10.092Å, b = 17.245Å, c = 17.355Å
β = 113.678°
Ratio:a:b:c = 0.585 : 1 : 1.006
Unit Cell Volume:V 2766.2 ų
Z:2

Optical Data of Bergenite

Type:Biaxial (-)
RI values: nα = 1.660 nβ = 1.700 - 1.710 nγ = 1.722
Maximum Birefringence:δ = 0.062

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

Chemical Properties of Bergenite

Formula:
Ca
 
2
Ba
 
4
(UO
 
2
)
 
9
(PO
 
4
)
 
6
O
 
6
· 16H
 
2
O
Simplified for copy/paste:Ca2Ba4(UO2)9(PO4)6O6·16H2O
Essential elements:Ba, Ca, H, O, P, U
All elements listed in formula:Ba, Ca, H, O, P, U

Relationship of Bergenite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.EC.05Françoisite-(Nd)
(Nd,Ce,Sm)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
8.EC.05Phuralumite
Al
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
3
(OH)
 
2
· 13H
 
2
O
8.EC.05Upalite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 7H
 
2
O
8.EC.05Françoisite-(Ce)
(Ce,Nd,Ca)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
8.EC.10Arsenuranylite
Ca(UO
 
2
)
 
4
(AsO
 
4
)
 
2
(OH)
 
4
· 6H
 
2
O
8.EC.10Dewindtite
H
 
2
Pb
 
3
(UO
 
2
)
 
2
(PO
 
4
)
 
4
O
 
4
· 12H
 
2
O
8.EC.10Kivuite
(Th,Ca,Pb)(UO
 
2
)
 
4
(HPO
 
4
)
 
2
(OH)
 
8
· 7H
 
2
O
8.EC.10Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
(PO
 
4
)
 
4
O
 
4
· 8H
 
2
O
8.EC.10Yingjiangite
K
 
2
Ca(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
6
· 6H
 
2
O
8.EC.15Dumontite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
· 3H
 
2
O
8.EC.15Hügelite
Pb
 
2
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
O
 
2
· 5H
 
2
O
8.EC.20Metavanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 2H
 
2
O
8.EC.20Vanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
8.EC.20Arsenovanmeersscheite
U
4+
 
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.EC.25Althupite
AlTh(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
5
O
 
2
· 15H
 
2
O
8.EC.30Mundite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
3
· 5.5H
 
2
O
8.EC.35Phurcalite
Ca
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
O
 
2
· 7H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.11.1Lermontovite
U(PO
 
4
)(OH) · H
 
2
O
19.11.2Metavanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 2H
 
2
O
19.11.3Vanmeersscheite
U
6+
 
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
19.11.4Chernikovite
(H
 
3
O)
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6H
 
2
O
19.11.5Vyacheslavite
U(PO
 
4
)(OH) · nH
 
2
O
19.11.6Metanatroautunite
Na(UO
 
2
)(PO
 
4
)(H
 
2
O)
 
3
19.11.7Yingjiangite
K
 
2
Ca(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
6
· 6H
 
2
O
19.11.8Meta-ankoleite
K
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6H
 
2
O
19.11.9Uramphite
(NH
 
4
)
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6H
 
2
O
19.11.10Torbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 12H
 
2
O
19.11.11Metatorbernite
Cu(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 8H
 
2
O
19.11.12Saléeite
Mg(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 10H
 
2
O
19.11.13Ningyoite
CaU(PO
 
4
)
 
2
· 1-2H
 
2
O
19.11.14Meta-autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 6-8H
 
2
O
19.11.15Autunite
Ca(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 11H
 
2
O
19.11.16Pseudo-autunite
(H
 
3
O)
 
4
Ca
 
2
(UO
 
2
)
 
2
(PO
 
4
)
 
4
· 5H
 
2
O
19.11.17Phurcalite
Ca
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
O
 
2
· 7H
 
2
O
19.11.18Phosphuranylite
(H
 
3
O)
 
3
KCa(UO
 
2
)
 
7
(PO
 
4
)
 
4
O
 
4
· 8H
 
2
O
19.11.19Ulrichite
CaCu(UO
 
2
)(PO
 
4
)
 
2
· 4H
 
2
O
19.11.21Metauranocircite
Ba(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 7H
 
2
O
19.11.22Uranocircite
Ba(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 10H
 
2
O
19.11.23Ranunculite
HAl(UO
 
2
)(PO
 
4
)(OH)
 
3
· 4H
 
2
O
19.11.24Triangulite
Al
 
3
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH)
 
5
· 5H
 
2
O
19.11.25Mundite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
3
· 5.5H
 
2
O
19.11.26Upalite
Al(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 7H
 
2
O
19.11.27Furongite
Al
 
13
(UO
 
2
)
 
7
(PO
 
4
)
 
13
(OH)
 
14
· 58H
 
2
O
19.11.28Threadgoldite
Al(UO
 
2
)
 
2
(PO
 
4
)
 
2
(OH) · 8H
 
2
O
19.11.29Phuralumite
Al
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
3
(OH)
 
2
· 13H
 
2
O
19.11.30Moreauite
Al
 
3
(UO
 
2
)(PO
 
4
)
 
3
(OH)
 
2
· 13H
 
2
O
19.11.31Sabugalite
HAl(UO
 
2
)
 
4
(PO
 
4
)
 
4
· 16H
 
2
O
19.11.32Uranospathite
(Al,☐)(UO
 
2
)
 
2
(PO
 
4
)
 
2
F · 20(H
 
2
O,F)
19.11.33Althupite
AlTh(UO
 
2
)
 
7
(PO
 
4
)
 
4
(OH)
 
5
O
 
2
· 15H
 
2
O
19.11.34Françoisite-(Nd)
(Nd,Ce,Sm)(UO
 
2
)
 
3
(PO
 
4
)
 
2
O(OH) · 6H
 
2
O
19.11.35Kivuite
(Th,Ca,Pb)(UO
 
2
)
 
4
(HPO
 
4
)
 
2
(OH)
 
8
· 7H
 
2
O
19.11.36Parsonsite
Pb
 
2
(UO
 
2
)(PO
 
4
)
 
2
· 2H
 
2
O
19.11.37Dewindtite
H
 
2
Pb
 
3
(UO
 
2
)
 
2
(PO
 
4
)
 
4
O
 
4
· 12H
 
2
O
19.11.38Dumontite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
· 3H
 
2
O
19.11.39Przhevalskite
Pb
 
2
(UO
 
2
)
 
3
(PO
 
4
)
 
2
(OH)
 
4
· 3H
 
2
O
19.11.40Lehnerite
Mn
2+
 
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 8H
 
2
O
19.11.41Bassetite
Fe
2+
 
(UO
 
2
)
 
2
(PO
 
4
)
 
2
· 8H
 
2
O
19.11.42Vochtenite
(Fe
2+
 
,Mg)Fe
3+
 
(UO
 
2
)
 
4
(PO
 
4
)
 
4
(OH) · 12-13H
 
2
O

Other Names for Bergenite

Synonyms:
Barium-Phosphuranylite
Other Languages:
German:Bergenit
Russian:Бергенит
Spanish:Bergenita

Other Information

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 Bergenite

Reference List:

- +
American Mineralogist (1960): 45: 909.

American Mineralogist (1981): 66: 1102.

Bültemann, H. W. & G. H. Moh (1959): Bergenit, ein neues Mineral der Phosphuranylit-Gruppe. Neues Jahrbuch für Mineralogie, Monatshefte, 1959, 232-233.

Piret, P. & Deliens, M. (1981): New data for holotype bergenite. Bulletin de Minéralogie 104, 16-18. (in French)

Locock, A. J. & Burns, P. C. (2003c): The crystal structure of bergenite, a new geometrical isomer of the phosphuranylite group. Canadian Mineralogist: 41: 91-101.

Burns, Peter C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Bergenite

Search Engines:
  • Look for Bergenite on Google
  • Look for Bergenite images on Google
  • External Links:
  • Look for Bergenite on Webmineral
  • Look for Bergenite on Athena Mineralogy
  • Look for Bergenite on Wikipedia
  • Look for Bergenite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Bergenite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Fine Minerals from Weinrich Minerals, Inc.
  • Search for Bergenite on Well-Arranged Molecules
  • Buy from McDougall Minerals
  • Buy RARE Minerals from Rocks of Africa
  • SpiriferMinerals.com - high quality low prices
  • rare and unusual minerals mainly crystallized
  • Bergenite specimens for sale - minfind.com
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy fine minerals and gemstones from Pala International
  • Rare and Unusual minerals at Mineralogical Research Company
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  • Buy from David K Joyce minerals
  • Localities for Bergenite

    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.
    (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.
    France
     
    • Auvergne
      • Allier
        • Ébreuil
          • Échassières
    Kolitsch, U., Gröbner, J. & Brandstätter, F. (2009): Neufunde von Les Montmins, Allier, Frankreich. Lapis 34 (11), 24-32; 54 (in German).
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Menzenschwand
    No reference listed
    • Saxony
      • Erzgebirge
        • Johanngeorgenstadt District
    Wittern: "Mineralfundorte in Deutschland", 2001
        • Marienberg District
          • Lauta
    Hajek, W. (2010): Kristallwelten Marienberg. Weise Verlag, München.
      • Vogtland
        • Oelsnitz
    Wittern: "Mineralfundorte in Deutschland", 2001
        • Zobes-Bergen District
          • Bergen U deposit
            • Bergen
    "Sigurd Stordal" Collection, aquired from Hochwälder (E-Rocks)
    H.W. Bültemann & G.H. Moh (1959) Neues Jahrbuch für Mineralogie, Monatshefte, 232-233
          • Zobes U deposit
            • Mechelgrün
    Tröger, S. (2006): Uran- und Wismutmineralien von Mechelgrün im Vogtland. Lapis 31 (9), 22-24; 58. (in German)
    USA
     
    • Utah
      • Emery Co.
    Min News 13:7 p2
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