Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (3 online) Mindat Auctions

Cousinite

Formula:
MgU
 
2
Mo
 
2
O
 
11
·6H
 
2
O


Possibly a "Mg-Umohoite". Reinvestigation by modern methods needed.

Davison (1954) describes also an uran molybdate of Mg as monoclinic / pseudo-orthorombic with a = 6.37, b = 33.46, c = 15.0 A and beta = 90°. This mineral is listed in the recent compilation of unnamed species (Smith & Nickel, 2007) as UM1954-// - MoO-MgU.

Classification of Cousinite

IMA status:Questionable/Doubtful
Explanation of status:Fleischer's comment in the American Mineralogist in the New Minerals section: "No physical properties or x-ray data are given, nor is the origin of the name stated. Discussion.-Insufficient data. Compare with moluranite, Am. Mineral. 43, 380 (1958)."<br /> Possibly a "Mg-Umohoite".
Nickel-Strunz 10th (pending) edition ID:7.HA.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
H : Uranium and uranyl molybdates and wolframates
A : With U4+
Dana 8th edition ID:49.3.2.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
3 : Hydrated Molybdates and Tungstates Containing Hydroxyl or Halogen
Hey's CIM Ref.:27.3.10

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
mindat.org URL:http://www.mindat.org/min-1143.html
Please feel free to link to this page.

Type Occurrence of Cousinite

Type Locality:Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre)
Year of Discovery:1958

Chemical Properties of Cousinite

Formula:
MgU
 
2
Mo
 
2
O
 
11
·6H
 
2
O
Essential elements:H, Mg, Mo, O, U
All elements listed in formula:H, Mg, Mo, O, U
Analyical Data:After deduction of wulfenite impurity.
UO2 (58.10)
MoO3 (27.17)
MgO (4.31)
H2O (10.42)

Relationship of Cousinite to other Species

Related Minerals - Nickel-Strunz Grouping):
7.HA.05Sedovite
U(MoO
 
4
)
 
2
7.HA.15Moluranite
U(UO
 
2
)
 
2
Mo
 
5
O
 
19
·12H
 
2
O ?
Related Minerals - Hey's Index Grouping:
27.3.1Lindgrenite
Cu
 
3
[OH|MoO
 
4
]
 
2
27.3.2Powellite
Ca[MoO
 
4
]
27.3.3Wulfenite
Pb[MoO
 
4
]
27.3.4Koechlinite
(BiO)
 
2
[MoO
 
4
]
27.3.5Sedovite
U(MoO
 
4
)
 
2
27.3.6Mourite
UMo
 
5
O
 
12
(OH)
 
10
27.3.7Iriginite
UO
 
2
Mo
 
2
O
 
7
·3H
 
2
O
27.3.8Umohoite
(UO
 
2
)MoO
 
4
·4H
 
2
O
27.3.9Moluranite
U(UO
 
2
)
 
2
Mo
 
5
O
 
19
·12H
 
2
O ?
27.3.11Calcurmolite
(Ca,Na)
 
2
(UO
 
2
)
 
3
Mo
 
2
(O,OH)
 
11
·nH
 
2
O
27.3.12Tengchongite
CaO·6UO
 
3
·2MoO
 
3
·12H
 
2
O
27.3.13Kamiokite
Fe
 
2
Mo
 
3
O
 
8
27.3.14Ferrimolybdite
Fe
 
2
[MoO
 
4
]
 
3
 · nH
 
2
O

Other Names for Cousinite

German names:
Cousinit
Spanish names:
Cousinita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Cousinite

Reference List:G.F. Davidson (1954): in Summary of progress Geol. Surv. G. Gr., p.70

J.F. Vaes (1958): "Cousiniet, een nieuw uraanmineral". Geologie en Mijnbouw
20, 449.

American Mineralogist: 44: 910.

M. Deliens (1975): "Une association de molybdates d'uranium de Shinkolobwe (région du Shaba, République du Zaïre)". Annales de la Société Géologique de Belgique 98, 155-160.

M. Deliens & P. Piret (1976): "Nouvelles sonnées sur une umohoite magnésienne de Shinkolobwe (région du Shaba, République du Zaïre)". Annales de la Société Géologique de Belgique 99, 205-209.

Internet Links for Cousinite

Search Engines:
  • Look for Cousinite on Google
  • Look for Cousinite images on Google
    • External Links:
  • Cousinite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • High-end worldwide specimens & outstanding customer service
  • The Arkenstone - Fine Minerals
  • e-Rocks - Mineral Auctions and Sales
  • Fine Minerals from Dan Weinrich Minerals
  • Wendel Minerals - Auktion & Shop
  • rare and unusual minerals mainly crystallized
  • Buy from David K Joyce minerals
  • Search for Cousinite on minvision.com
  • Fabre Minerals - search for Cousinite specimens
  • Wilensky Fine Minerals
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Top quality minerals from Kristalle of California
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Cousinite

    Hide Locality List
    The 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.
    These maps work faster with Firefox!
    (TL) indicates type locality. ? 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.
    Democratic Republic of Congo (Zaïre)
     
    • Katanga (Shaba)
      • Katanga Copper Crescent
        • Central area
          • Shinkolobwe
    		Vaes, J. F. (1959) American Mineralogist: 44: 910.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.