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Sedovite

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Georgii Yakovlevich Sedov
Formula:
U4+(MoO4)2
System:
Orthorhombic
Colour:
Brown to reddish brown
Hardness:
3
Name:
Named after Georgii lakovkevich Sedov (1877-1914) Russian polar explorer.
This page provides mineralogical data about Sedovite.


Classification of Sedovite

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 Sedovite

Diaphaneity (Transparency):
Opaque
Colour:
Brown to reddish brown
Hardness (Mohs):
3
Cleavage:
Distinct/Good
one cleavage parallel to elongation
Density:
4.2 g/cm3 (Measured)    

Optical Data of Sedovite

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 Sedovite

IMA Formula:
U4+(MoO4)2
Elements listed in formula:

Crystallography of Sedovite

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 Volume:
V 239.01 ų (Calculated from Unit Cell)
X-Ray 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 Sedovite

Associated Minerals at Type Locality:

Relationship of Sedovite to other Species

7.HA.10CousiniteMgU24+(MoO4)2(OH)6 · 2H2O (?)
7.HA.15MoluraniteH4U4+(UO2)3(MoO4)7 · 18H2O
27.3.1LindgreniteCu3(Mo6+O4)2(OH)2
27.3.2PowelliteCaMoO4
27.3.3WulfenitePbMoO4
27.3.4KoechliniteBi2MoO6
27.3.6MouriteUO2Mo56+O16 · 5H2O
27.3.7Iriginite(UO2)Mo26+O7 · 3H2O
27.3.8Umohoite(UO2)Mo6+O4 · 2H2O
27.3.9MoluraniteH4U4+(UO2)3(MoO4)7 · 18H2O
27.3.10CousiniteMgU24+(MoO4)2(OH)6 · 2H2O (?)
27.3.11Calcurmolite(Ca1-xNax)2(UO2)3(MoO4)2(OH)6-x · nH2O
27.3.12TengchongiteCa(UO2)6(MoO4)2O5 · 12H2O
27.3.13KamiokiteFe22+Mo34+O8
27.3.14FerrimolybditeFe23+(Mo6+O4)3 · 7H2O

Other Names for Sedovite

Name in Other Languages:
German:Sedovit
Spanish:Sedovita

Other Information

Other Information:
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 Sedovite

Reference List:
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 Sedovite

mindat.org URL:
https://www.mindat.org/min-3602.html
Please feel free to link to this page.

Localities for Sedovite

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.
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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