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Sengierite

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About SengieriteHide

Edgar Sengier
Formula:
Cu2(UO2)2(VO4)2 · 6H2O
Colour:
Olive-green, yellowish green
Lustre:
Adamantine, Vitreous
Hardness:
Specific Gravity:
4.05
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Edgard Sengier (9 October 1879, Kortrijk, Belgium - 26 July 1963, Cannes, France), Director, Union Miniere du Haut-Katanga, Zaire. He provided uranium ores from Katanga for the Manhattan project.
Carnotite Group.

An uncommon secondary mineral deposited from solutions derived from altering uraninite.


Classification of SengieriteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.HB.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
B : Uranyl Sorovanodates
42.6.10.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
6 : A2(XO4)Zq·xH2O
21.4.6

21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni

Physical Properties of SengieriteHide

Adamantine, Vitreous
Transparency:
Transparent
Colour:
Olive-green, yellowish green
Streak:
Light green
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
On {001}, perfect
Density:
4.05 g/cm3 (Measured)    4.1 g/cm3 (Calculated)

Optical Data of SengieriteHide

Type:
Biaxial (-)
RI values:
nα = 1.760 - 1.770 nβ = 1.920 - 1.940 nγ = 1.940 - 1.970
2V:
Measured: 37° to 39°, Calculated: 36°
Max Birefringence:
δ = 0.180 - 0.200
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v
Pleochroism:
Visible
Comments:
X = Bluish green to colourless
Y = Olive-green to greenish yellow
Z = Yellowish green to colourless

Chemical Properties of SengieriteHide

Formula:
Cu2(UO2)2(VO4)2 · 6H2O
IMA Formula:
Cu2(UO2)2(VO4)2(OH)2 · 6H2O

Crystallography of SengieriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 10.599 Å, b = 8.093 Å, c = 10.085 Å
β = 103.42°
Ratio:
a:b:c = 1.31 : 1 : 1.246
Unit Cell V:
841.45 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals six-sided thin plates, flattened on {001}, and exhibiting {001}, {110}, {100}, {201}, and {111:; also as flaky coatings.

Type Occurrence of SengieriteHide

Place of Conservation of Type Material:
Harvard University, Cambridge, Massachusetts, USA: #103963.
Associated Minerals at Type Locality:

Other Language Names for SengieriteHide

Relationship of Sengierite to other SpeciesHide

Member of:
Other Members of this group:
CarnotiteK2(UO2)2(VO4)2 · 3H2OMon. 2/m : P21/b
Margaritasite(Cs,K,H3O)2(UO2)2(VO4)2 · H2OMon. 2/m : P21/b
MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2OOrth. mmm (2/m 2/m 2/m)
MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2OTric.
StrelkiniteNa2(UO2)2(VO4)2 · 6H2OOrth.
TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2OOrth. mmm (2/m 2/m 2/m) : Pnna
VanuraliteAl(UO2)2(V2O8)(OH) · 11H2OMon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Chalcocite6 photos of Sengierite associated with Chalcocite on mindat.org.
Carnotite3 photos of Sengierite associated with Carnotite on mindat.org.
Tyuyamunite3 photos of Sengierite associated with Tyuyamunite on mindat.org.
Malachite2 photos of Sengierite associated with Malachite on mindat.org.
Torbernite2 photos of Sengierite associated with Torbernite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.HB.05CarnotiteK2(UO2)2(VO4)2 · 3H2OMon. 2/m : P21/b
4.HB.05Margaritasite(Cs,K,H3O)2(UO2)2(VO4)2 · H2OMon. 2/m : P21/b
4.HB.15CurienitePb(UO2)2(VO4)2 · 5H2OOrth.
4.HB.15FrancevilliteBa(UO2)2(VO4)2 · 5H2OOrth.
4.HB.15FritzscheiteMn(UO2)2(PO4,VO4)2 · 10H2O (?)Tet.
4.HB.20MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2OTric.
4.HB.20VanuraliteAl(UO2)2(V2O8)(OH) · 11H2OMon.
4.HB.25MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2OOrth. mmm (2/m 2/m 2/m)
4.HB.25TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2OOrth. mmm (2/m 2/m 2/m) : Pnna
4.HB.30StrelkiniteNa2(UO2)2(VO4)2 · 6H2OOrth.
4.HB.35UvaniteU6+2V5+6O21 · 15H2O (?)Orth.
4.HB.40RauviteCa(UO2)2(V10O28) · 16H2O

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.4.1UvaniteU6+2V5+6O21 · 15H2O (?)Orth.
21.4.2Vanuranylite(H3O)2(UO2)2(VO4)2 · 4H2O
21.4.3StrelkiniteNa2(UO2)2(VO4)2 · 6H2OOrth.
21.4.4CarnotiteK2(UO2)2(VO4)2 · 3H2OMon. 2/m : P21/b
21.4.5Margaritasite(Cs,K,H3O)2(UO2)2(VO4)2 · H2OMon. 2/m : P21/b
21.4.7MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2OOrth. mmm (2/m 2/m 2/m)
21.4.8TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2OOrth. mmm (2/m 2/m 2/m) : Pnna
21.4.9RauviteCa(UO2)2(V10O28) · 16H2O
21.4.10FrancevilliteBa(UO2)2(VO4)2 · 5H2OOrth.
21.4.11MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2OTric.
21.4.12VanuraliteAl(UO2)2(V2O8)(OH) · 11H2OMon.
21.4.13CurienitePb(UO2)2(VO4)2 · 5H2OOrth.
21.4.14FritzscheiteMn(UO2)2(PO4,VO4)2 · 10H2O (?)Tet.
21.4.15Palenzonaite(Ca,Na)3CaMn2+2(VO4)3Iso. m3m (4/m 3 2/m) : Ia3d
21.4.16Santafeite(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn4+8(VO4)16(OH,O)20 · 8H2OOrth. mmm (2/m 2/m 2/m)
21.4.17PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
21.4.18BrackebuschitePb2Mn3+(VO4)2(OH)Mon. 2/m : P21/m
21.4.19ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
21.4.20HeyitePb5Fe2+2(VO4)2O4Mon.
21.4.21MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
21.4.22SchubneliteFe3+VO4 · H2OTric.
21.4.23FervaniteFe3+4V5+4O16 · 5H2OMon.
21.4.24KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.
21.4.25Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2OMon.
21.4.26Rusakovite(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
21.4.27KolovratiteNixZny(VO4)0.67(x+y) · nH2O

Other InformationHide

Notes:
Radioactive. 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 SengieriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Vaes, J.F., Kerr, P.F. (1949) Sengierite: a preliminary description. American Mineralogist: 34: 109-120.
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.: 1047-1048.
Hutton, C.O. (1957) Sengierite from Bisbee, Arizona. American Mineralogist: 42: 408–411.
Frondel, C. (1958) Systematic mineralogy of uranium and thorium. U.S. Geological Survey Bulletin: 1064: 258–260.
Piret, P., Declercq, J.-P., Wauters-Stoop, D. (1980) Structure cristalline de la sengiérite. Bulletin de Mineralogie: 103: 176-179. (in French with English abstract).
Fleischer, M., Chao, G.Y., Francis, C.A., Pabst, A. (1981) New mineral names. American Mineralogist: 66: 220.
Burns, P.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 SengieriteHide

Localities for SengieriteHide

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.
Argentina
 
  • Mendoza
    • Malargüe Department
      • Pampa Amarilla District
Brodtkorb, M.K. de, Minerlogia y genesis del yacimiento Huemul, Mendoza. Tesis Doctoral. Facultad de Ciencias Exactas, Fisicas y Naturales, Buenos Aires. 1963; American Mineralogist: 51: 1-13
Czech Republic
 
  • Hradec Králové Region
    • Broumov (Braunau)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
Democratic Republic of the Congo
 
  • Katanga (Shaba)
    • Kambove District
      • Shinkolobwe
    • Kolwezi District
      • Kolwezi
Wilson, W. E. (2018) The Musonoi mine, Kolwezi District, Lualaba Province, Democratic Republic of the Congo. Mineralogical Record 49:236-304
    • Lubumbashi (Elizabethville)
Am Min (1949) 34 (1-2), 109-120; 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: 1048.
France
 
  • Occitanie
    • Hérault
      • Le Puech
No reference listed
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
U. Kolitsch, J. Gröbner, G. Blaß, H.-W. Graf und A. Pring (2005): Neufunde aus der Grube Clara im mittleren Schwarzwald (II): Dreyerit, Gasparit-(Ce), Klinobisvanit, Kobaltkoritnigit, Metatyuyamunit, Roscoelith, Sengierit, Vésigniéit und Wakefieldit. Lapis 30 (9), 35-39; 58. (in German)
Italy
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
Balestra C. (2014): Sistematica ligure 2014. Prie, 10, 35-37.
Morocco
 
  • Souss-Massa Region
    • Taroudant Province
      • Amelal
American Mineralogist (1957) 42:408-410
Spain
 
  • Catalonia
    • Lleida (Lérida)
      • El Pallars Jussà
        • La Vall Fosca
          • La Torre de Cabdella (La Torre de Capdella)
            • Castell-estaó
http://mineralsabella.blogspot.com/2009/11/minerales-raros-de-uranio.html
USA
 
  • Arizona
    • Cochise Co.
      • Mule Mts
        • Warren District
          • Bisbee
Hutton, C.O. (1957), Sengierite from Bisbee, AZ, Am.Min.: 42: 408-411; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 366; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 77.
Mineral and/or Locality  
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