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Sharpite

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Formula:
Ca(UO2)6(CO3)5(OH)4 · 6H2O
System:
Orthorhombic
Colour:
Greenish-yellow, ...
Hardness:
Name:
Named after Major Robert Rich Sharp (1881-), discoverer of the uranium deposit at Shinkolobwe, Zaire in 1915.
This page provides mineralogical data about Sharpite.

Classification of Sharpite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
5.EA.35

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
A : UO2:CO3 > 1:1
16b.7.10.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
11.11.10

11 : Carbonates
11 : Carbonates of Cr and U
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http://www.mindat.org/min-3633.html
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Type Occurrence of Sharpite

Year of Discovery:
1935
Associated Minerals at Type Locality:

Physical Properties of Sharpite

Colour:
Greenish-yellow, olive-green
Hardness (Mohs):

Crystallography of Sharpite

Crystal System:
Orthorhombic
Cell Parameters:
a = 21.99Å, b = 15.63Å, c = 4.48Å
Ratio:
a:b:c = 1.407 : 1 : 0.287
Unit Cell Volume:
V 1,539.79 ų (Calculated from Unit Cell)
Morphology:
Occurs as crusts of thin, radiating fibers.

Optical Data of Sharpite

Type:
Biaxial (+)
RI values:
nα = 1.633 nγ = 1.720
Max Birefringence:
δ = 0.087
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak to distinct
Pleochroism:
Visible
Comments:
X = Brownish
Y (perp. laths) =
Z (elong.) = greenish yellow

Chemical Properties of Sharpite

Formula:
Ca(UO2)6(CO3)5(OH)4 · 6H2O
Essential elements:
All elements listed in formula:

Relationship of Sharpite to other Species

5.EA.05UM1997-24-CO:CaCuHUCa2Cu(UO2)2(CO3)2O3 · 3H2O
5.EA.10UrancalcariteCa(UO2)3(CO3)(OH)6 · 3H2O
5.EA.15WyartiteCaU5+(UO2)2(CO3)O4(OH) · 7H2O
5.EA.20Oswaldpeetersite(UO2)2(CO3)(OH)2 · 4H2O
5.EA.25RoubaultiteCu2(UO2)3(OH)10 · 5H2O
5.EA.30Kamotoite-(Y)Y2(UO2)4(CO3)3O4 · 14H2O
11.11.1StichtiteMg6Cr2(OH)16[CO3] · 4H2O
11.11.2Rutherfordine(UO2)CO3
11.11.3Joliotite(UO2)CO3 · nH2O
11.11.4GrimseliteK3Na(UO2)(CO3)3 · H2O
11.11.5BayleyiteMg2(UO2)(CO3)3 · 18H2O
11.11.6MetazelleriteCa(UO2)(CO3)2 · 3H2O
11.11.7ZelleriteCa(UO2)(CO3)2 · 5H2O
11.11.8WyartiteCaU5+(UO2)2(CO3)O4(OH) · 7H2O
11.11.9UrancalcariteCa(UO2)3(CO3)(OH)6 · 3H2O
11.11.11VogliteCa2Cu(UO2)(CO3)4 · 6H2O
11.11.12AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
11.11.13SwartziteMgCa(UO2)(CO3)3 · 12H2O
11.11.14RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2O
11.11.15Kamotoite-(Y)Y2(UO2)4(CO3)3O4 · 14H2O
11.11.16Shabaite-(Nd)Ca(Nd,Sm,Y)2(UO2)(CO3)4(OH)2 · 6H2O
11.11.17Astrocyanite-(Ce)Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2 · 1.5H2O
11.11.18Bijvoetite-(Y)(Y,Dy)2(UO2)4(CO3)4(OH)6 · 11H2O
11.11.19WidenmannitePb2(OH)2[(UO2)(CO3)2]
11.11.20ZnucaliteZn12Ca(UO2)(CO3)3(OH)22 · 4H2O

Other Names for Sharpite

Name in Other Languages:
German:Sharpit
Spanish:Sharpita

Other Information

Other Information:
Soluble in dilute acids with effervescence.
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 Sharpite

Reference List:
Mélon (1938) Bull. séan. inst. roy. colon. Belge 9: 333.

American Mineralogist (1939): 24: 658.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 275.

American Mineralogist (1985): 70: 220.

Internet Links for Sharpite

Localities for Sharpite

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
Bull.Inst.roy.col.belge,(1938) 9, 333-336; Lapis 17(3), 13-40 (1992)
France
 
  • Alsace
    • Haut-Rhin
      • Thur valley (Thann valley)
        • Kruth
Handbook of Mineralogy; Jiltl Cejka - Zdenek Urbanec (1974) Alteration of Minerals in Museum Collections I.SBORNII( NARODNIHO MUZEA V PRAZE ACTA MUSEI NATIONALIS PRAGAE Volumen XXX B (1974), No. 1-2
  • Limousin
    • Haute-Vienne
      • Bessines-sur-Gartempe
Le Règne Minéral, Hors Série IV, 1998
Germany
 
  • Rhineland-Palatinate
    • Hunsrück
      • Birkenfeld
        • Ellweiler
Aufschluss 69/(7+8), Lapis 79/(7+8)
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Kłodzko District
Eligiusz Szełęg collection (SEM/EDS identification)
Mineral and/or Locality  
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