Verneite
A valid IMA mineral species
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About Verneite
Jules G. Verne
Formula:
Na2Ca3Al2F14
Colour:
Colorless to pale yellow
Specific Gravity:
2.974 (Calculated)
Crystal System:
Isometric
Name:
Named in honor of the French novelist Jules Verne [8 February 1828 – 24 March 1905], author of several adventure novels including Journey to the Center of the Earth (1864), in which the characters enter the volcano Snæfellsjökull, Iceland trying to find a way toward the centre of the Earth.
Known synthetic analogue. Initially reported as "mineral HG".
Unique Identifiers
Mindat ID:
51591
Long-form identifier:
mindat:1:1:51591:5
GUID
(UUID V4):
(UUID V4):
48d50736-0d81-4c52-9749-6e8e55133d20
IMA Classification of Verneite
Approved
Approval year:
2016
First published:
2018
Classification of Verneite
3.CB.60
3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
3 : HALIDES
C : Complex halides
B : Neso-aluminofluorides
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 |
|---|---|---|
| Ver | 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 Verneite
Transparency:
Transparent
Colour:
Colorless to pale yellow
Density:
2.974 g/cm3 (Calculated)
Chemistry of Verneite
Mindat Formula:
Na2Ca3Al2F14
Elements listed:
Common Impurities:
K
Chemical Analysis
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | Na2.01Ca2.82Al2.17F14.02 |
| 2 | (Na1.47K0.09)Σ1.56Ca3.25Al2.19F14.33 |
Sample references:
| ID | Type | Locality | Reference | Notes |
|---|---|---|---|---|
| 1 | Type Specimen | Eldfell, Heimaey island, Vestmannaeyjar archipelago, Vestmannaeyjar, Southern Region, Iceland | ||
| 2 | Type Specimen | Mount Vesuvius, Somma-Vesuvius Complex, Naples, Campania, Italy | " " |
Crystallography of Verneite
Crystal System:
Isometric
Class (H-M):
2 3 - Tetartoidal
Space Group:
I21 3
Cell Parameters:
a = 10.264(1) Å
Unit Cell V:
1081.4 ų
Z:
4
Morphology:
Isometric crystals up to 20 microns in diameter, with {110}, {100}, and {111} as the main forms.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.18 Å | (76) |
| 3.23 Å | (68) |
| 2.95 Å | (100) |
| 2.184 Å | (78) |
| 2.009 Å | (98) |
| 1.871 Å | (75) |
| 1.811 Å | (84) |
| 1.663 Å | (66) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Verneite
Co-Type Localities:
General Appearance of Type Material:
White-yellowish to brown crusts and massive aggregates up to several mm in size, sometimes also in transparent, colorless to pale yellowish crystals.
Place of Conservation of Type Material:
The Icelandic Institute of Natural History, Gardabaer, Iceland # NI 15509, NI 15518 and NI 17046 (Hekla holotype) and NI 12256 (Eldfell – cotype), University of Copenhagen, Denmark, # E4-1A, E4-2A and E4-2B.
Empirical Formula of Type Material:
(Na1.47K0.09)Σ1.56Ca3.25Al2.19F14.33
Geological Setting of Type Material:
In fumaroles
Associated Minerals at Type Locality:
Reference:
Balić-Žunić, T., Garavelli, A., Pinto, D. and Mitolo, D. (2018) Verneite, Na2Ca3Al2F14, a new aluminum fluoride mineral from Icelandic and Vesuvius fumaroles. Minerals: 8: 553-562.
Synonyms of Verneite
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Verneite associated with Jakobssonite | CaAlF5 |
| 1 photo of Verneite associated with Avogadrite | (K,Cs)[BF4] |
Related Minerals - Strunz-mindat Grouping
| 3.CB.05 | Cryolithionite | Na3Al2(LiF4)3 |
| 3.CB.15 | Cryolite | Na2NaAlF6 |
| 3.CB.15 | Elpasolite | K2NaAlF6 |
| 3.CB.15 | Simmonsite | Na2LiAlF6 |
| 3.CB.20 | Colquiriite | CaLi[AlF6] |
| 3.CB.25 | Weberite | Na2Mg[AlF6]F |
| 3.CB.25 | Leonardsenite | MgAlF5 · 2H2O |
| 3.CB.30 | Karasugite | SrCa[Al(F,OH)7] |
| 3.CB.35 | Usovite | Ba2CaMgAl2F14 |
| 3.CB.40 | Pachnolite | NaCa[AlF6] · H2O |
| 3.CB.40 | Thomsenolite | NaCa[AlF6] · H2O |
| 3.CB.45 | Carlhintzeite | Ca2[AlF6]F · H2O |
| 3.CB.50 | Yaroslavite | Ca3Al2F10(OH)2 · H2O |
| 3.CB.55 | Sbacchiite | Ca2AlF7 |
Fluorescence of Verneite
None observed
Other Information
Electrical:
It may be piezoelectric due to its space group symmetry
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 Verneite
mindat.org URL:
https://www.mindat.org/min-51591.html
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External Links:
Mineral Dealers:
References for Verneite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017. CNMNC Newsletter No 36. Mineralogical Magazine, 81 (2) 403-409 doi:10.1180/minmag.2017.081.022
Localities for Verneite
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.
Iceland (TL) | |
| Mineralogical Magazine: 81: 403–409 +1 other reference |
| Mineralogical Magazine: 81: 403–409. +3 other references |
Italy (TL) | |
| Mineralogical Magazine: 81: 403–409 +2 other references |
| Balić-Žunić et al. (2018) |
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Eldfell, Heimaey island, Vestmannaeyjar archipelago, Vestmannaeyjar, Southern Region, Iceland