Cousinite Mineral Data

General Cousinite Information

Chemical Formula:

MgU2Mo2O13•6(H2O) (?)

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

Empirical Formula:

MgU₂Mo₂O₁₃•6(H₂O)

Environment:

Alteration product of ores containing uraninite and molybdenite. An inadequately characterized mineral.

IMA Status:

Approved IMA 1958

Locality:

Shinkolobwe, Shaba, Zaire. Link to MinDat.org Location Data.

Name Origin:

Named for Jules Cousin (1884-1965), Belgian, president of Union Miniere du Haut Katanga.

Cousinite Image

Images:

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

Crystal System:

MonoclinicSpace Group: ?

Physical Properties of Cousinite

Color:

Black.

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Luster:

Vitreous (Glassy)

Optical Properties of Cousinite

Optical Data:

Calculated Properties of Cousinite

Fermion Index:

Fermion Index = 0.05
Boson Index = 0.95

Photoelectric:

PE_Cousinite=1,249.42 barns/electron
U=PE_Cousinite x r_electron= . barns/cc.

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 Becquerels (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

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

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

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

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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Ask about Cousinite here :
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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: