Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice 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.
Hide all sections | Show all sections

About KroupaiteHide

Crystal System:
The new mineral is named after mining engineer Gustav Kroupa (born 30 August 1857 in Mutějovice near Rakovník, Bohemia, died 31 May 1935 in Vienna, Austria), mining engineer, in 1896 he became the head of the k.k. Uranfarbenfabrik in St. Joachimsthal (Jáchymov) until 1900. He approved and sent 10 tons of leachates after processing of uranium ore for uranium pigments to Marie-Curie Sklodowska and Pierre Curie, who were the first to discover and isolate 3 grams of RaCl2 from them.
Structurally related to leesite and metaschoepite.

Classification of KroupaiteHide

Approved, Pending publication
Approval Year:

Chemical Properties of KroupaiteHide

IMA Formula:
KPb0.5[(UO2)8O4(OH)10] · 10H2O

Crystallography of KroupaiteHide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cell Parameters:
a = 14.8201(8) Å, b = 14.0958(8) Å, c = 16.765(1) Å
a:b:c = 1.051 : 1 : 1.189
Unit Cell V:
3,502.23 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
From Type Description.

Type Occurrence of KroupaiteHide

Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the National Museum in Prague, Czech Republic, catalogue number no. P1P 16/ 2017, and the Natural History Museum of Los Angeles County, Los Angeles, CA, USA, catalogue number 66572

Synonyms of KroupaiteHide

Other InformationHide

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 KroupaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Plášil, J., Kampf, A.R., Olds, T.A., Sejkora, J., Škoda, R., Burns, P.C. and Čejka, J. (2017) Kroupaite, IMA 2017-031. CNMNC Newsletter No. 38, August 2017, page 1036; Mineralogical Magazine: 81: 1033–1038.

Internet Links for KroupaiteHide

Localities for KroupaiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Czech Republic (TL)
  • Karlovy Vary Region
    • Karlovy Vary District
      • Jáchymov
Plášil, J., Kampf, A.R., Olds, T.A., Sejkora, J., Škoda, R., Burns, P.C. and Čejka, J. (2017) Kroupaite, IMA 2017-031. CNMNC Newsletter No. 38, August 2017, page 1036; Mineralogical Magazine: 81: 1033–1038.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 25, 2019 20:07:26 Page generated: March 20, 2019 23:32:01
Go to top of page