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Sedovite

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About SedoviteHide

Georgii Yakovlevich Sedov
Formula:
U(MoO4)2
Colour:
Brown to reddish brown
Hardness:
3
Specific Gravity:
4.2
Crystal System:
Orthorhombic
Name:
Named after Georgii lakovkevich Sedov (1877-1914) Russian polar explorer.
This page provides mineralogical data about Sedovite.


Classification of SedoviteHide

Approved
7.HA.05

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
H : Uranium and uranyl molybdates and wolframates
A : With U4+
48.4.1.1

48 : ANHYDROUS MOLYBDATES AND TUNGSTATES
4 : Miscellaneous
27.3.5

27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates

Physical Properties of SedoviteHide

Transparency:
Opaque
Colour:
Brown to reddish brown
Hardness:
Cleavage:
Distinct/Good
one cleavage parallel to elongation
Density:
4.2 g/cm3 (Measured)    

Optical Data of SedoviteHide

Type:
Biaxial
Type:
Anisotropic
Anisotropism:
slightly anisotropic - masked by internal reflections
Dispersion:
extreme
Colour in reflected light:
gray with brownish tint
Internal Reflections:
strong red
Pleochroism:
Weak
Comments:
Z reddish-brown, X and Y paler reddish-brown.
Comments:
nearly opaque

Chemical Properties of SedoviteHide

Formula:
U(MoO4)2
IMA Formula:
U4+(MoO4)2

Crystallography of SedoviteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 3.36(6) Å, b = 11.08(3) Å, c = 6.42(5) Å
Ratio:
a:b:c = 0.303 : 1 : 0.579
Unit Cell V:
239.01 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.193 (10)
11.04 (9)
3.370 (9)
3.064 (9)
5.530 (8)
2.775 (6)
2.559 (6)

Type Occurrence of SedoviteHide

Other Language Names for SedoviteHide

German:Sedovit
Spanish:Sedovita

Related Minerals - Nickel-Strunz GroupingHide

7.HA.10CousiniteMgU2Mo2O11 · 6H2O
7.HA.15MoluraniteH4U4+(UO2)3(MoO4)7 · 18H2O

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

27.3.1LindgreniteCu3(MoO4)2(OH)2Mon. 2/m : P21/m
27.3.2PowelliteCa(MoO4)Tet. 4/m : I41/a
27.3.3WulfenitePb(MoO4)Tet. 4/m : I41/a
27.3.4KoechliniteBi2MoO6Orth. mm2 : Pna21
27.3.6MouriteUMo5O12(OH)10Mon.
27.3.7Iriginite(UO2)Mo2O7 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbcm
27.3.8Umohoite(UO2)MoO4 · 2H2OTric.
27.3.9MoluraniteH4U4+(UO2)3(MoO4)7 · 18H2O
27.3.10CousiniteMgU2Mo2O11 · 6H2O
27.3.11Calcurmolite(Ca,Na)2(UO2)3Mo2(O,OH)11 · nH2O
27.3.12TengchongiteCaO · 6UO3 · 2MoO3 · 12H2OOrth.
27.3.13KamiokiteFe2Mo3O8Hex.
27.3.14FerrimolybditeFe2(MoO4)3 · nH2OOrth. mmm (2/m 2/m 2/m) : Pmmn

Other InformationHide

Notes:
Soluble in conc. HCl, HNO3, and H2SO4 only with difficulty, on boiling
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 SedoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fleischer M (1966) New mineral names. American Mineralogist (1966): 51: 530.
Skvortsova K V, Sidorenko G A (1965) Sedovite, a new supergene mineral of uranium and molybdenum. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 94, issue 5, 548-554

Internet Links for SedoviteHide

Localities for SedoviteHide

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.
Canada
 
  • Nova Scotia
    • Yarmouth Co.
Chatterjee, A. K. 1977: Copper, lead, zinc, silver, tin, tungsten and molybdenum mineralization, Yarmouth Co.; in Mineral Resources Division, Report of Activities 1976; Nova Scotia Department of Mines and Energy, Report ME 1977-1, p. 103-113.
Kazakhstan (TL)
 
  • Almaty Province (Almaty Oblysy; Almati Oblast')
    • Chu-Ili Mts
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mexico
 
  • Sonora
    • Mun. de Bacoachi
      • Bacoachi
Excalibur Mineral Co. specimen
Mineral and/or Locality  
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