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Lepersonnite-(Gd)

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About Lepersonnite-(Gd)Hide

Jacques, Lambert, Désiré Lepersonne
Formula:
Ca(Gd,Dy)2(UO2)24(SiO4)4(CO3)8(OH)24 · 48H2O
Name:
After Jacques Lepersonne (Mulhouse, France October 26 1909 - Etterbeek, Brussels, August 10 1997); Royal Belgian Museum for Central Africa
A unique species being the only approved mineral with dominant gadolinium.

Not approved phases with species-defining gadolinium were identified in the The Moon regolith; there are also single finds from Kudriavy volcano, Russia (an oxide phase) and Kyauk Tha Mtn, Myanmar (Gd-dominant monazite).


Classification of Lepersonnite-(Gd)Hide

Approved
5.EG.10

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
G : With SO4 or SiO4
17.1.12.1

17 : COMPOUND CARBONATES
1 : Miscellaneous
17.4.12

17 : Silicates Containing other Anions
4 : Silicates with carbonates

Pronounciation of Lepersonnite-(Gd)Hide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Optical Data of Lepersonnite-(Gd)Hide

Type:
Biaxial (-)
RI values:
nα = 1.638 nβ = 1.666 nγ = 1.682
2V:
Measured: 73° , Calculated: 72°
Max Birefringence:
δ = 0.044
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively weak

Chemical Properties of Lepersonnite-(Gd)Hide

Formula:
Ca(Gd,Dy)2(UO2)24(SiO4)4(CO3)8(OH)24 · 48H2O
IMA Formula:
CaGd2(UO2)24(CO3)8Si4O28 · 60H2O

Type Occurrence of Lepersonnite-(Gd)Hide

Place of Conservation of Type Material:
Royal Museum for Central Africa, Tervuren
National Museum for Natural History, Washington

Synonyms of Lepersonnite-(Gd)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Studtite4 photos of Lepersonnite-(Gd) associated with Studtite on mindat.org.
Becquerelite4 photos of Lepersonnite-(Gd) associated with Becquerelite on mindat.org.
Fourmarierite3 photos of Lepersonnite-(Gd) associated with Fourmarierite on mindat.org.
Uraninite3 photos of Lepersonnite-(Gd) associated with Uraninite on mindat.org.
Gummite2 photos of Lepersonnite-(Gd) associated with Gummite on mindat.org.
Curite2 photos of Lepersonnite-(Gd) associated with Curite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.EG.05SchröckingeriteNaCa3(UO2)(CO3)3(SO4)F · 10H2OTric. 1 : P1
5.EG.05UM1997-27-CO:CaHKSUCa, K, Mg, U, S(?)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.4.1TilleyiteCa5(Si2O7)(CO3)2Mon.
17.4.2SpurriteCa5(SiO4)2(CO3)Mon.
17.4.3ParaspurriteCa5(SiO4)2(CO3)Mon.
17.4.4ScawtiteCa7(Si3O9)2CO3 · 2H2OMon. 2/m
17.4.5FukaliteCa4[Si2O6][CO3](OH)2Mon. 2/m : P21/b
17.4.6MeioniteCa4Al6Si6O24CO3Tet. 4/m : I4/m
17.4.7Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2OHex. 6 : P63
17.4.8CarletoniteKNa4Ca4Si8O18(CO3)4(OH,F) · H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mbm
17.4.9Iimoriite-(Y)Y2[SiO4][CO3]Tric.
17.4.10Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2OOrth. mmm (2/m 2/m 2/m)
17.4.11Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2OOrth. mm2
17.4.13AshburtonitePb4Cu4(Si4O12)(HCO3)4(OH)3Cl · H2OTet.
17.4.14Surite(Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2Mon.
17.4.15Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
17.4.16Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2

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 Lepersonnite-(Gd)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Deliens, M., Piret, P. (1982) Bijvoetite et lepersonnite, carbonates hydratés d’uranyle et de terres rares de Shinkolobwe, Zaïre. Canadian Mineralogist: 20: 231–238 (in French with English abs.)
American Mineralogist (1983): 68: 1248.

Internet Links for Lepersonnite-(Gd)Hide

Localities for Lepersonnite-(Gd)Hide

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.
Democratic Republic of the Congo (TL)
 
  • Katanga (Shaba)
    • Kambove District
      • Shinkolobwe
Canadian Mineralogist(1982) 20, 231-238
Mineral and/or Locality  
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