Mineralogy Database

Sengierite Mineral Data

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General Sengierite Information

Help on Chemical  Formula: Chemical Formula: Cu2(UO2)2V2O8•6(H2O)
Help on Composition: Composition: Molecular Weight = 1,005.12 gm
   Uranium   47.36 %  U    53.73 % UO2
   Vanadium  10.14 %  V    18.10 % V2O5
   Copper    12.64 %  Cu   15.83 % CuO
   Hydrogen   1.20 %  H    10.75 % H2O
   Oxygen    28.65 %  O
            ______        ______ 
            100.00 %       98.41 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2(UO2)2V5+2O8•6(H2O)
Help on Environment: Environment: Secondary mineral in uranium-bearing Cu deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1949
Help on Locality: Locality: Luiswishi, Elizabethville-Jadotville area, Shava, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Edgar Sengier (1879-1963), executive director, Societe Generale de Belgiwue.
Help on Name Pronunciation: Name Pronunciation: Sengierite + Pronunciation Say SENGIERITE
Help on Synonym: Synonym: ICSD 200704
  PDF 8-398
 

Sengierite Image

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  Sengierite

Comments: Green, tabular, crystals of sengierite on matrix.
Location: Lubumbashi, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Sengierite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.1904:1:1.1327
Help on Cell Dimensions: Cell Dimensions: a = 10.599, b = 8.903, c = 10.085, Z = 2; beta = 103.42° V = 925.66 Den(Calc)= 3.61
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 9.81(1), 4.905(0.43), 3.218(0.19),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 1) ( 0 1 0) ( 1 1 1) ( 1 1 0) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.

 

Physical Properties of Sengierite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Green, Yellow green.
Help on Density: Density: 4.05
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Radioactive.
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: light green
 

Optical Properties of Sengierite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.216 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.364 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2438,KPDmeas= 0.2173,KC= 0.1787
Ncalc = 1.65 - 1.72
Help on Optical Data: Optical Data: Biaxial (-), a=1.77, b=1.92-1.94, g=1.94, bire=0.1700, 2V(Calc)=0-36, 2V(Meas)=~37. Dispersion r < v strong.
Help on Pleochroism (x): Pleochroism (x): blue green.
Help on Pleochroism (y): Pleochroism (y): olive green.
Help on Pleochroism (z): Pleochroism (z): yellow green.
 

Calculated Properties of Sengierite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.58 gm/cc
note: Specific Gravity of Sengierite =4.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0038029122
Boson Index = 0.9961970878
Help on Photoelectric: Photoelectric: PESengierite =1,224.44 barns/electron
U=PESengierite x relectron=4,381.14 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,566,751.97 (Gamma Ray American Petroleum Institute Units)
Concentration of Sengierite per GRapi unit = 280.37 (PPB)

Sengierite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 8.53 ± 2.13 grams of pure Sengierite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 852.78 ±213.20 grams of pure Sengierite .

Estimated Radioactivity from Sengierite - very strong
Specimen
Size
Weight/Volume
(Sphere)
*
Calculated
Activity
Bequerols
(Bq)
Calculated
Activity
Curies (Ci)
Estimated
Activity
GR(api)
Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.78 cm 84,780,501 2.29E-03 3,566,751.97 1,172.63
100 gm / 3.61 cm 8,478,050 2.29E-04 356,675.20 117.26
10 gm / 1.68 cm 847,805 2.29E-05 35,667.52 11.73
1 gm / 7.78 mm 84,781 2.29E-06 3,566.75 1.17
0.1 gm / 3.61 mm 8,478 2.29E-07 356.68 0.12
0.01 gm / 1.68 mm 848 2.29E-08 35.67 0.01
0.001 gm / 0.78 mm 85 2.29E-09 3.57 0.00

Weight of pure Sengierite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.05 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
 

Sengierite Classification

Help on  Dana Class: Dana Class: 42.06.10.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.06)where (AB)2 (XO4) Zq � x(H2O)
  (42.06.10)Dana Group
 
42.06.10.01 Sengierite Cu2(UO2)2V2O8•6(H2O) P 21/a 2/m
Help on  Strunz Class: Strunz Class: 04.HB.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.H - V[5,6] Vanadates
  04.HB -Uranyl Sorovanadates
 
04.HB.10 Sengierite Cu2(UO2)2V2O8•6(H2O) P 21/a 2/m
 

Other Sengierite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Sengierite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Sengierite Specimen Label here :

Sengierite

Cu2(UO2)2V2O8•6(H2O)
Dana No: 42.06.10.01 Strunz No: 04.HB.10
Locality:

 

Notes:

 

 
   
 


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