Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
MgU2Mo2O11 · 6H2O
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

Approved, 'Grandfathered' (first described prior to 1959), Questionable

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
H : Uranium and uranyl molybdates and wolframates
A : With U4+

3 : Hydrated Molybdates and Tungstates Containing Hydroxyl or Halogen

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates URL:
Please feel free to link to this page.

Type Occurrence of Cousinite

Chemical Properties of Cousinite

MgU2Mo2O11 · 6H2O
All elements listed in formula:
Analytical Data:
After deduction of wulfenite impurity.
UO2 (58.10)
MoO3 (27.17)
MgO (4.31)
H2O (10.42) 

Relationship of Cousinite to other Species

7.HA.15MoluraniteH4U4+(UO2)3(MoO4)7 · 18H2O
27.3.7Iriginite(UO2)Mo2O7 · 3H2O
27.3.8Umohoite(UO2)MoO4 · 2H2O
27.3.9MoluraniteH4U4+(UO2)3(MoO4)7 · 18H2O
27.3.11Calcurmolite(Ca,Na)2(UO2)3Mo2(O,OH)11 · nH2O
27.3.12TengchongiteCaO · 6UO3 · 2MoO3 · 12H2O
27.3.14FerrimolybditeFe2(MoO4)3 · nH2O

Other Names for Cousinite

Name in Other Languages:

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 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

Localities for Cousinite

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.
Democratic Republic of Congo (Zaïre) (TL)
  • Katanga (Shaba)
    • Katanga Copper Crescent
      • Shinkolobwe
Vaes, J. F. (1959) American Mineralogist: 44: 910.
Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2016, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 26, 2016 17:27:37 Page generated: May 19, 2016 08:00:46