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 ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Richetite

This page is currently not sponsored. Click here to sponsor this page.
00657000014949227745178.jpg
Richetite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
00769170014971987704783.jpg
Richetite

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
09705160014949227536352.jpg
Richetite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
04500090014946720131491.jpg
Richetite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
01160920014947008047170.jpg
Richetite

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
02826940014947008046524.jpg
Richetite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
00657000014949227745178.jpg
Richetite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
01926320014971987705384.jpg
Richetite

Shinkolobwe Mine, Shinkolobwe, Kambove District, Haut-Katanga, DR Congo
Hide all sections | Show all sections

About RichetiteHide

Formula:
(Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24•41H2O
The correct formula (the structural one, simplified) is (Fe,Mg)0.5Pb4.5(U5+(UO2)17O18(OH)14](H2O)~19.5 (Plášil, 2017).
Colour:
Coffee-brown to black, green
Lustre:
Adamantine
Hardness:
3½
Crystal System:
Triclinic
Name:
Named after Emile Richet (born in Lessines, Belgium on 16 April 1884, died in Brussels on 25 May 1938), Chief Geologist, Union Miniere du Haut-Katanga.
Richetite is one of three minerals with pentavalent uranium, the other two being wyartite and shinkolobweite (Plášil, 2017).


Classification of RichetiteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
Strunz 8th ed.:
4/H.07-60
Nickel-Strunz 10th (pending) ed.:
4.GB.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
G : Uranyl Hydroxides
B : With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
Dana 8th ed.:
5.9.5.1

5 : OXIDES CONTAINING URANIUM OR THORIUM
9 : Miscellaneous
Hey's CIM Ref.:
7.16.25

7 : Oxides and Hydroxides
16 : Oxides of U

Physical Properties of RichetiteHide

Lustre:
Adamantine
Transparency:
Translucent
Colour:
Coffee-brown to black, green
Hardness:
3½ on Mohs scale

Optical Data of RichetiteHide

Type:
Biaxial (-)
RI values:
nα = 1.900 nβ = 2.000 nγ = 2.000
Max Birefringence:
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
dispersion not observed

Chemical Properties of RichetiteHide

Formula:
(Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24•41H2O

The correct formula (the structural one, simplified) is (Fe,Mg)0.5Pb4.5(U5+(UO2)17O18(OH)14](H2O)~19.5 (Plášil, 2017).
IMA Formula:
(Fe3+,Mg)xPb2+8.6(UO2)36O36(OH)24 · 41H2O
Elements listed:
Fe, H, Mg, O, Pb, U - search for minerals with similar chemistry

Crystallography of RichetiteHide

Crystal System:
Triclinic
Cell Parameters:
a = 20.81 Å, b = 12.06 Å, c = 16.3 Å
α = 103.8°, β = 115.1°, γ = 90.4°
Ratio:
a:b:c = 1.726 : 1 : 1.352
Unit Cell V:
3,570.24 ų (Calculated from Unit Cell)

Type Occurrence of RichetiteHide

Other Language Names for RichetiteHide

German:Richetit
Spanish:Richetita

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Richetite associated with MasuyitePb(UO2)3O3(OH)2 · 3H2O

Related Minerals - Nickel-Strunz GroupingHide

4.GB.05AgrinieriteK2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2OOrth.
4.GB.05CompreignaciteK2(UO2)6O4(OH)6 · 7H2OOrth.
4.GB.05RameauiteK2Ca(H[3]2O)(H[5]2O)4[(UO2)6O6(OH)4](H[4]2O)Mon. m : Bb
4.GB.10BecquereliteCa(UO2)6O4(OH)6 · 8H2OOrth. mm2 : Pna21
4.GB.10BillietiteBa(UO2)6O4(OH)6 · 4-8H2OOrth. mm2
4.GB.10ProtasiteBa(UO2)3O3(OH)2 · 3H2OMon.
4.GB.20BauranoiteBa(UO2)2(OH)6 · 1-2H2O
4.GB.20Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
4.GB.20Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
4.GB.25FourmarieritePb(UO2)4O3(OH)4 · 4H2OOrth.
4.GB.30WölsendorfitePb7(UO2)14O19(OH)4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
4.GB.35MasuyitePb(UO2)3O3(OH)2 · 3H2OOrth.
4.GB.40MetavandendriesscheitePbU7O22 · nH2O n < 12Orth.
4.GB.40VandendriesscheitePbU7O22 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
4.GB.45VandenbrandeiteCu(UO2)(OH)4Tric. 1 : P1
4.GB.50SayritePb2(UO2)5O6(OH)2 · 4H2OMon. 2/m
4.GB.55CuritePb3(UO2)8O8(OH)6 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pnma
4.GB.60Iriginite(UO2)Mo2O7 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
4.GB.65UranosphaeriteBi(UO2)O2(OH)Mon. 2/m
4.GB.70HolfertiteCaxU6+2-xTi(O8-xOH4x) · 3H2OTrig. 3 : P3

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.16.1UraniniteUO2Iso. m3m (4/m 3 2/m) : Fm3m
7.16.2Schoepite(UO2)8O2(OH)12 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
7.16.3ParaschoepiteUO3 · 2H2OOrth.
7.16.4Metaschoepite(UO2)8O2(OH)12 · 10H2OOrth. mmm (2/m 2/m 2/m) : Pbcn
7.16.5MetastudtiteUO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.16.6Studtite[(UO2)(O2)(H2O)2] · H2OMon.
7.16.7IanthiniteU4+(UO2)5O7 · 10H2OOrth. mm2 : Amm2
7.16.8CompreignaciteK2(UO2)6O4(OH)6 · 7H2OOrth.
7.16.9VandenbrandeiteCu(UO2)(OH)4Tric. 1 : P1
7.16.10RoubaultiteCu2(UO2)3(CO3)2O2(OH)2•4H2OTric. 1 : P1
7.16.11BecquereliteCa(UO2)6O4(OH)6 · 8H2OOrth. mm2 : Pna21
7.16.12RameauiteK2Ca(H[3]2O)(H[5]2O)4[(UO2)6O6(OH)4](H[4]2O)Mon. m : Bb
7.16.13AgrinieriteK2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2OOrth.
7.16.14ProtasiteBa(UO2)3O3(OH)2 · 3H2OMon.
7.16.15BillietiteBa(UO2)6O4(OH)6 · 4-8H2OOrth. mm2
7.16.16BauranoiteBa(UO2)2(OH)6 · 1-2H2O
7.16.17Metacalciouranoite(Ca,Ba,Pb,K2)U2O7 · 2H2O
7.16.18Calciouranoite(Ca,Ba,Pb)U2O7 · 5H2O
7.16.19OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
7.16.20Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
7.16.21Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig.
7.16.22Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
7.16.23BranneriteUTi2O6Mon. 2/m : B2/m
7.16.24FourmarieritePb(UO2)4O3(OH)4 · 4H2OOrth.
7.16.26CuritePb3(UO2)8O8(OH)6 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pnma
7.16.27MasuyitePb(UO2)3O3(OH)2 · 3H2OOrth.
7.16.28VandendriesscheitePbU7O22 · 12H2OOrth. mmm (2/m 2/m 2/m) : Pbca
7.16.29MetavandendriesscheitePbU7O22 · nH2O n < 12Orth.
7.16.30SayritePb2(UO2)5O6(OH)2 · 4H2OMon. 2/m
7.16.31WölsendorfitePb7(UO2)14O19(OH)4 · 12H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
7.16.32Clarkeite(Na,Ca,Pb)(UO2)O(OH) · 0-1H2OTrig.
7.16.33UranosphaeriteBi(UO2)O2(OH)Mon. 2/m

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 RichetiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1948): 33: 384.
Bulletin de la Société française de Minéralogie et de Cristallographie (1984): 107: 581.
American Mineralogist (1985): 70: 1335.
Burns, P.C. (1998b) The structure of richetite, a rare lead uranyl oxide hydrate. Canadian Mineralogist: 36: 187-199.
Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.
Plášil, J. (2017): Crystal structure of richetite revisited: crystallographic evidence for the presence of pentavalent uranium. American Mineralogist, 102, 1771-1775.

Internet Links for RichetiteHide

Localities for RichetiteHide

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.
Australia
 
  • Queensland
    • Cloncurry Shire
      • Cloncurry
Mineralogical and fluid characteristics of ‘Monakoff-Style’ iron–oxide–copper–gold (IOCG) mineralisation in the Cloncurry Area, Queensland. in Abdurrahman, A., J. C. Ø. Andersen, and B. J. Williamson. "Meeting of the Geological Society’s Mineral Deposits Studies Group was held on the 2nd–4th January 2013 at the University of Leicester, UK." Applied Earth Science (Trans. Inst. Min. Metall. B) 121.4 (2012): 214.
Williams et al 2015; Mineralogical and fluid characteristics of ‘Monakoff-Style’ iron–oxide–copper–gold (IOCG) mineralisation in the Cloncurry Area, Queensland. in Abdurrahman, A., J. C. Ø. Andersen, and B. J. Williamson. "Meeting of the Geological Society’s Mineral Deposits Studies Group was held on the 2nd–4th January 2013 at the University of Leicester, UK." Applied Earth Science (Trans. Inst. Min. Metall. B) 121.4 (2012): 214.
Czech Republic
 
  • Central Bohemian Region
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
  • Karlovy Vary Region
    • Karlovy Vary District
Lapis 2002(7/8), 63-65
DR Congo (TL)
 
  • Haut-Katanga
    • Kambove District
      • Shinkolobwe
Bulletin de la Société belge de Géologie (1947) 70, B 212-226.; Deliens, M. (1996) Overzicht van de mineralogie van de koper-, kobalt- en uraniumvoorkomens in Zuid-Shaba (Zaïre). Pages 35-49 in: Schatten der Aarde. Van mineraal tot juweel. Tentoonstelling in de abdij Saint-Gérard de Brogne van 27 april tot 27 oktober 1996. Catalogus opgemaakt onder de leiding van R. Warin, AGAB en P. Van hee, MKA (in Dutch).
Finland
 
  • North Ostrobothnia
    • Kuusamo
Al-Ani, Thair and Pakkanen, Lassi (2013): Mini-Atlas of REE-minerals in Finnish Bedrocks. Geologian Tutkimuskeskus/Geological Survey of Finland.
France
 
  • Auvergne-Rhône-Alpes
    • Savoie
      • La Lauzière massif
DE ASCENCAO GUEDES R. (2000). La Lauzière : les espèces minérales, Savoie, France. Le Règne Minéral hors-série n°6, pp. 24-39. Editions du Piat.
Russia
 
  • Republic of Karelia
    • Ladoga Region
      • Pitkyaranta District (Pitkäranta District)
Ivashchenko, V. I., Valkama, M., Sundblad, K., Golubev, A. I., & Alekseev, V. Y. (2011, September). New data on mineralogy and metallogeny of scarns in the Pitkyaranta ore region. In Doklady Earth Sciences (Vol. 440, No. 1, p. 1307). SP MAIK Nauka/Interperiodica.
USA
 
  • Colorado
    • Saguache Co.
      • Marshall Pass Mining District
Chester S. Lemanski, Jr. - specimen analyzed by the Czech Geological Survey (Ing. Petr Ondrush) thru Josef Vajdak - method unspecified (ref. JV03/271-272)
Quick NavTopAbout RichetiteClassification Physical Properties Optical Data Chemical Properties Crystallography Type Occurrence Other LanguagesCommon AssociatesNickel-StrunzHey's CIMOther InformationReferences Internet Links Localities Locality List
 
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 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 27, 2020 02:44:37 Page generated: December 27, 2019 21:32:04
Go to top of page