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UM1979-21-SiO:AlHNaV

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Formula:
(Na,Ca)0.73(V,Mg,Fe)2(Si,Al,V)4O10(OH)2·nH2O
Calculated by Ł. K. from analysis reported in the original paper (note: material after Na-saturation; V as V3+; by analogy to montmorillonite).
Possibly a member of the montmorillonite group. Associates with uraninite (pitchblende) in pockets and lenses in a uranium mine in the northern part of Converse Co., Wyoming, USA; found at 150 feet depth, within the Wasatch Formation of Eocene age.


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Chemical Properties of UM1979-21-SiO:AlHNaVHide

Formula:
(Na,Ca)0.73(V,Mg,Fe)2(Si,Al,V)4O10(OH)2·nH2O

Calculated by Ł. K. from analysis reported in the original paper (note: material after Na-saturation; V as V3+; by analogy to montmorillonite).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.02Å(
Comments:
randomly oriented; oriented clay fraction: 15Å; oriented Na-saturated material: 12.6Å (expands to 16.7Å after glycolation)

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 UM1979-21-SiO:AlHNaVHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Güven, M., Hower, W.F. (1979): A vanadium smectite. Clay Minerals: 14: 241-245; in: Fleischer, M., Cabri, L.J., Chao, G.Y., Pabst, A. (1980): New mineral names. American Mineralogist: 65: 1070
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se/Valid2009_03.pdf (2016)

Internet Links for UM1979-21-SiO:AlHNaVHide

Localities for UM1979-21-SiO:AlHNaVHide

ⓘ - 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.
USA
 
  • Wyoming
Güven, M., Hower, W.F. (1979): A vanadium smectite. Clay Minerals: 14: 241-245; in: Fleischer, M., Cabri, L.J., Chao, G.Y., Pabst, A. (1980): New mineral names. American Mineralogist: 65: 1070
 
Mineral and/or Locality  
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