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Vandenbrandeite

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Formula:
Cu(UO2)(OH)4
System:
Triclinic
Colour:
Blackish green to dark ...
Hardness:
4
Name:
Named by Alfred Schoep in 1932 in honour of Pierre Van den Brande (1896-1957), Belgian geologist, Geological Survey of Katanga, who discovered the deposit at Kalongwe.
This page provides mineralogical data about Vandenbrandeite.

Classification of Vandenbrandeite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
4.GB.45

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
5.3.2.1

5 : OXIDES CONTAINING URANIUM OR THORIUM
3 : AXO4·xH2O
7.16.9

7 : Oxides and Hydroxides
16 : Oxides of U
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First Recorded Occurrence of Vandenbrandeite

Year of Discovery:
1932
Associated Minerals at First Recorded Locality:

Occurrences of Vandenbrandeite

Geological Setting:
Oxide zone above a supergene copper deposit

Physical Properties of Vandenbrandeite

Vitreous, Sub-Vitreous, Greasy
Diaphaneity (Transparency):
Transparent, Translucent
Colour:
Blackish green to dark green with bluish green tint
Streak:
Green
Hardness (Mohs):
4
Tenacity:
Brittle
Cleavage:
Perfect
On {001} perfect; distinct in the zone [001]; and, indistinct also in that zone.
Density:
5.03 g/cm3 (Measured)    5.26 g/cm3 (Calculated)

Crystallography of Vandenbrandeite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Space Group Setting:
P1
Cell Parameters:
a = 7.86Å, b = 5.44Å, c = 6.10Å
α = 91.87°, β = 102.0°, γ = 89.62°
Ratio:
a:b:c = 1.445 : 1 : 1.121
Morphology:
Somewhat bladed {001} crystals with acute habit, often in parallel aggregates; lathlike at times. Massive.
X-Ray Powder Diffraction Data:
d-spacingIntensity
5.06 (40)
4.29 (100)
2.92 (80)
2.56 (40)
2.09 (30)
1.85 (30)
1.47 (30)
1.32 (30)
Comments:
ICDD 4-340 (natural)

Optical Data of Vandenbrandeite

Type:
Biaxial (-)
RI values:
nα = 1.765 - 1.770 nβ = 1.780 - 1.792 nγ = 1.800
2V:
Measured: 90° , Calculated: 60° to 88°
Birefringence:
0.035
Max Birefringence:
δ = 0.035
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
none
Pleochroism:
Visible
Comments:
X blue green, Z yellow green

Chemical Properties of Vandenbrandeite

Formula:
Cu(UO2)(OH)4
Essential elements:
All elements listed in formula:

Relationship of Vandenbrandeite to other Species

4.GB.05AgrinieriteK2(Ca,Sr)(UO2)3O3(OH)2·5H2O
4.GB.05CompreignaciteK2(UO2)6O4(OH)6 · 7H2O
4.GB.05RameauiteK2Ca(UO2)6(OH)16 · H2O
4.GB.10BecquereliteCa(UO2)6O4(OH)6 · 8H2O
4.GB.10BillietiteBa(UO2)6O4(OH)6 · 4-8H2O
4.GB.10ProtasiteBa(UO2)3O3(OH)2 · 3H2O
4.GB.15RichetitePb(UO2)4O5 · 4H2O
4.GB.20BauranoiteBa(UO2)2(OH)6 · 1-2H2O
4.GB.20Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
4.GB.20Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
4.GB.25FourmarieritePb(UO2)4O3(OH)4 · 4H2O
4.GB.30Wölsendorfite(Pb,Ca)U2O7 · 2H2O
4.GB.35MasuyitePb(UO2)3O3(OH)2 · 3H2O
4.GB.40MetavandendriesscheitePbU7O22 · nH2O n < 12
4.GB.40VandendriesscheitePbU7O22 · 12H2O
4.GB.50SayritePb2(UO2)5O6(OH)2 · 4H2O
4.GB.55CuritePb3(UO2)8O8(OH)6 · 3H2O
4.GB.60Iriginite(UO2)Mo2O7 · 3H2O
4.GB.65UranosphaeriteBi(UO2)O2(OH)
4.GB.70HolfertiteCaxU6+2-xTi(O8-xOH4x) · 3H2O
7.16.1UraniniteUO2
7.16.2Schoepite(UO2)8O2(OH)12 · 12H2O
7.16.3ParaschoepiteUO3 · 2H2O
7.16.4MetaschoepiteUO3 · 1-2H2O
7.16.5MetastudtiteUO4 · 2H2O
7.16.6Studtite[(UO2)(O2)(H2O)2] · H2O
7.16.7IanthiniteU4+(UO2)5O7 · 10H2O
7.16.8CompreignaciteK2(UO2)6O4(OH)6 · 7H2O
7.16.10RoubaultiteCu2(UO2)3(OH)10 · 5H2O
7.16.11BecquereliteCa(UO2)6O4(OH)6 · 8H2O
7.16.12RameauiteK2Ca(UO2)6(OH)16 · H2O
7.16.13AgrinieriteK2(Ca,Sr)(UO2)3O3(OH)2·5H2O
7.16.14ProtasiteBa(UO2)3O3(OH)2 · 3H2O
7.16.15BillietiteBa(UO2)6O4(OH)6 · 4-8H2O
7.16.16BauranoiteBa(UO2)2(OH)6 · 1-2H2O
7.16.17Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
7.16.18Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
7.16.19OrthobranneriteU4+U6+Ti4O12(OH)2
7.16.20Thorutite(Th,U,Ca)Ti2(O,OH)6
7.16.21Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
7.16.22Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38
7.16.23Brannerite(U4+,REE,Th,Ca)(Ti,Fe3+,Nb)2(O,OH)6
7.16.24FourmarieritePb(UO2)4O3(OH)4 · 4H2O
7.16.25RichetitePb(UO2)4O5 · 4H2O
7.16.26CuritePb3(UO2)8O8(OH)6 · 3H2O
7.16.27MasuyitePb(UO2)3O3(OH)2 · 3H2O
7.16.28VandendriesscheitePbU7O22 · 12H2O
7.16.29MetavandendriesscheitePbU7O22 · nH2O n < 12
7.16.30SayritePb2(UO2)5O6(OH)2 · 4H2O
7.16.31Wölsendorfite(Pb,Ca)U2O7 · 2H2O
7.16.32Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2O
7.16.33UranosphaeriteBi(UO2)O2(OH)

Other Names for Vandenbrandeite

Other Information

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 Vandenbrandeite

Reference List:
Schoep (1932) Ann. Mus. Congo belge, Tervuren, 1(1), no. 3, 25-31.

Thoreau (1933) Soc. géol. Belgique, Ann.: 55: C3 (as Uranolepidite).

American Mineralogist (1933): 18: 179.

Palache, Charles, Harry Berman & Clifford Frondel (1944) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 632-633.

American Mineralogist (1951): 36: 394-410.

Frondel, C. (1958) US Geological Survey Bulletin 1064: 100-103.

Rosenzweig, A. and Ryan, R.R. (1977b) Vandenbrandeite CuUO2(OH)4. Cryst. Struct. Commun.: 6: 53-56.

Burns, P.C. (2005) U6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Vandenbrandeite

Specimens:
The following Vandenbrandeite specimens are currently listed for sale on minfind.com.

Localities for Vandenbrandeite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Czech Republic
 
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Nové Město na Moravě
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
Am Min 36:394-410
    • Katanga Copper Crescent
      • Kambove District
      • Kolwezi District
        • Kamoto
J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. V (2003)
        • Kolwezi
[MinRec 9:33, 9:114]
      • Lubumbashi (Elizabethville)
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; Mineralogical Record: 20: 268.
      • Shinkolobwe
[MinRec 20:287]
      • Swambo
France
 
  • Languedoc-Roussillon
    • Hérault
      • Lodève
[Le Règne Minéral 1997, 13, p.5-18]
UK
 
  • England
    • Cornwall
      • St Just District
        • St Just
          • Botallack
            • Wheal Owles
Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
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