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Cabvinite

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New structure type. The first purely thorium-halogenide and thorium-fluoride mineral to date.


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Classification of CabviniteHide

Approved
Approval Year:
2017
3.D0.

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
0 :

Physical Properties of CabviniteHide

Colour:
White

Chemical Properties of CabviniteHide

Formula:
Th2F7(OH)·3H2O
IMA Formula:
Th2F7(OH) · 3H2O

Crystallography of CabviniteHide

Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
I4/m
Cell Parameters:
a = 11.3689(2) Å, c = 6.4175(1) Å
Ratio:
a:c = 1 : 0.564
Unit Cell V:
829.47 ų
Z:
4
Morphology:
Square prismatic crystals, up to 100 μm in length and 40 μm in thickness.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.02(ms)
5.66(w)
3.975(s)
3.595(m)
2.832(m)
2.125(m)
2.056(m)
2.004(m)
Comments:
From Type Description.

Type Occurrence of CabviniteHide

General Appearance of Type Material:
White square prismatic crystals, up to 100 μm in length and 40 μm in thickness
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci (Pisa), Italy, catalogue number 19711
Empirical Formula of Type Material:
Th2F6.7(OH)1.3·3H2O
Chemical Analysis of Type Material:
ThO282.35 %
F19.93 %
H2O10.21 %
O=F-8.40 %
Total:104.09 %
Geological Setting of Type Material:
Mo-Bi ore deposit
Associated Minerals at Type Locality:
Reference:
Orlandi, P., Biagioni, C., Zaccarini, F. (2017): Cabvinite, Th2F7(OH)·3H2O, the first natural actinide halide. American Mineralogist, 10: 1384-1389.

Synonyms of CabviniteHide

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 CabviniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Orlandi, P, Biagioni, C. and Zaccarini, F. (2016) Cabvinite, IMA 2016-011. CNMNC Newsletter No. 31, June 2016, page 696; Mineralogical Magazine: 80: 691–697.
Orlandi, P., Biagioni, C., Zaccarini, F. (2017): Cabvinite, Th2F7(OH)·3H2O, the first natural actinide halide. American Mineralogist, 10: 1384-1389.

Internet Links for CabviniteHide

Localities for CabviniteHide

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.
Italy (TL)
 
  • Sardinia
    • Cagliari metropolitan city (Metropolitan City of Cagliari)
      • Sarroch
Orlandi, P, Biagioni, C. and Zaccarini, F. (2016) Cabvinite, IMA 2016-011. CNMNC Newsletter No. 31, June 2016, page 696; Mineralogical Magazine, 80, 691–697.;Orlandi, P., Biagioni, C., Zaccarini, F. (2017): Cabvinite, Th2F7(OH)·3H2O, the first natural actinide halide. American Mineralogist, 10: 1384-1389.
Mineral and/or Locality  
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