Mineralogy Database

Cousinite Mineral Data

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General Cousinite Information

Help on Chemical  Formula: Chemical Formula: MgU2Mo2O13•6(H2O) (?)
Help on Composition: Composition: Molecular Weight = 1,008.33 gm
   Magnesium    2.41 %  Mg    4.00 % MgO
   Uranium     47.21 %  U    56.73 % UO3
   Molybdenum  19.03 %  Mo   28.55 % MoO3
   Hydrogen     1.20 %  H    10.72 % H2O
   Oxygen      30.15 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgU2Mo2O13•6(H2O)
Help on Environment: Environment: Alteration product of ores containing uraninite and molybdenite. An inadequately characterized mineral.
Help on IMA Status: IMA Status: Approved IMA 1958
Help on Locality: Locality: Shinkolobwe, Shaba, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jules Cousin (1884-1965), Belgian, president of Union Miniere du Haut Katanga.
 

Cousinite Image

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  Cousinite

Comments: minute aggregate of greenish black platy crystals of Cousinite.
Location: Shinkolobwe, Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cousinite Crystallography

Help on Crystal System: Crystal System: Monoclinic Space Group: ?
 

Physical Properties of Cousinite

Help on Color: Color: Black.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Cousinite

Help on Optical Data: Optical Data:
 

Calculated Properties of Cousinite

Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PECousinite =1,249.42 barns/electron
U=PECousinite x relectron= . barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 3,544,082.88 (Gamma Ray American Petroleum Institute Units)
Concentration of Cousinite per GRapi unit = 282.16 (PPB)

Cousinite 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) 8.58 ± 2.15 grams of pure Cousinite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 858.24 ±214.56 grams of pure Cousinite .

Estimated Radioactivity from Cousinite - 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 84,510,653 2.28E-03 3,544,082.88 1,165.18
100 gm 8,451,065 2.28E-04 354,408.29 116.52
10 gm 845,107 2.28E-05 35,440.83 11.65
1 gm 84,511 2.28E-06 3,544.08 1.17
0.1 gm 8,451 2.28E-07 354.41 0.12
0.01 gm 845 2.28E-08 35.44 0.01
0.001 gm 85 2.28E-09 3.54 0.00

Weight of pure Cousinite in grams (gm).*
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
 

Cousinite Classification

Help on  Dana Class: Dana Class: 49.03.02.01 (49)Basic and Hydrated Molybdates and Tungstates
  (49.03)(Hydrated, containing Hydroxyl or Halogen)
  (49.03.02)Dana Group
 
49.03.02.01 Cousinite MgU2Mo2O13•6(H2O)(?) ? Mono
Help on  Strunz Class: Strunz Class: 07.HA.10 07 - SULFATES (SELENATES, TELLURATES)
  07.H - Uranium and Uranyl Molybdates and Wolframates
  07.HA -With U4+
 
07.HA.10 Cousinite MgU2Mo2O13•6(H2O)(?) ? Mono
 

Other Cousinite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Cousinite :
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

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

Cousinite

MgU2Mo2O13•6(H2O) (?)
Dana No: 49.03.02.01 Strunz No: 07.HA.10
Locality:

 

Notes: