Cabvinite
A valid IMA mineral species
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Formula:
Th2F7(OH) · 3H2O
Colour:
White
Crystal System:
Tetragonal
Name:
The name honours two Italian mineral collectors, Fernando Caboni (b. 1941) and Antonello Vinci (b. 1944), for their contribution to the knowledge of the Su Seinargiu mineralogy. Cabvinite is a portmanteau after their surnames, CABoni and VINci.
New structure type. The first purely thorium-halogenide, thorium-fluoride, and actinide halogenide mineral to date.
Unique Identifiers
Mindat ID:
47794
Long-form identifier:
mindat:1:1:47794:3
IMA Classification of Cabvinite
Approved
IMA Formula:
Th4+2F7(OH)·3H2O
Approval year:
2017
Classification of Cabvinite
3.D0.
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
0 :
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
0 :
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Cbv | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Cabvinite
Colour:
White
Chemistry of Cabvinite
Mindat Formula:
Th2F7(OH) · 3H2O
Element Weights:
Elements listed:
Crystallography of Cabvinite
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.02 Å | (ms) |
| 5.66 Å | (w) |
| 3.975 Å | (s) |
| 3.595 Å | (m) |
| 2.832 Å | (m) |
| 2.125 Å | (m) |
| 2.056 Å | (m) |
| 2.004 Å | (m) |
Reference:
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Cabvinite
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:
| ThO2 | 82.35 % |
|---|---|
| F | 19.93 % |
| H2O | 10.21 % |
| O=F | -8.40 % |
| Total: | 104.09 % |
Geological Setting of Type Material:
Mo-Bi ore deposit
Associated Minerals at Type Locality:
Synonyms of Cabvinite
Other Language Names for Cabvinite
Related Minerals - Strunz-mindat Grouping
| 3.D0. | Uranoclite | (UO2)2(OH)2Cl2(H2O)4 |
| 3.D0. | Gajardoite-(NH4) | (NH4)As3+4O6Cl2(Ca0.5◻0.5)(H2O)5 |
Radioactivity
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Cabvinite
mindat.org URL:
https://www.mindat.org/min-47794.html
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External Links:
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References for Cabvinite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter no 31. Mineralogical Magazine, 80 (4) 691-697 doi:10.1180/minmag.2016.080.083
Localities for Cabvinite
Showing 1 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Italy (TL) | |
| Hålenius et al. (2016) +1 other reference |
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