Arsenowagnerite
A valid IMA mineral species
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About Arsenowagnerite
Formula:
Mg2(AsO4)F
Colour:
Yellow, lemon-yellow, greenish-yellow or colourless
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.70 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named for being the arsenate analogue of wagnerite.
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
46580
Long-form identifier:
mindat:1:1:46580:5
IMA Classification of Arsenowagnerite
Approved
IMA Formula:
Mg2As5+O4F
Approval year:
2015
First published:
2018
Type description reference:
Pekov, Igor V., Zubkova, Natalia V., Agakhanov, Atali A., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2018) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VIII. Arsenowagnerite, Mg2(AsO4)F. Mineralogical Magazine, 82 (4) 877-888 doi:10.1180/minmag.2017.081.067
Classification of Arsenowagnerite
8.BB.X
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1
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 |
|---|---|---|
| Awag | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Arsenowagnerite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Arsenowagnerite
Vitreous
Transparency:
Transparent
Colour:
Yellow, lemon-yellow, greenish-yellow or colourless
Hardness:
5 on Mohs scale
Comment:
Ca 5
Tenacity:
Brittle
Cleavage:
Distinct/Good
Fracture:
Irregular/Uneven
Density:
3.70 g/cm3 (Calculated)
Optical Data of Arsenowagnerite
Type:
Biaxial (+)
RI values:
nα = 1.614(2) nβ = 1.615(2) nγ = 1.640(2)
2V:
Measured: 25° (5)
Max. Birefringence:
δ = 0.026
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Pleochroism:
Non-pleochroic
Chemistry of Arsenowagnerite
Mindat Formula:
Mg2(AsO4)F
Element Weights:
Elements listed:
Crystallography of Arsenowagnerite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 9.8638(3) Å, b = 12.9830(3) Å, c = 12.3284(3) Å
β = 109.291(3)°
β = 109.291(3)°
Ratio:
a:b:c = 0.76 : 1 : 0.95
Unit Cell V:
1490.15 ų
Z:
16
Morphology:
Equant to tabular crystals up to 1 mm across, forming crust
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.80 Å | (41) |
| 5.31 Å | (35) |
| 3.916 Å | (37) |
| 3.339 Å | (98) |
| 3.155 Å | (65) |
| 3.043 Å | (100) |
| 2.940 Å | (72) |
| 2.787 Å | (51) |
Reference:
Pekov, Igor V., Zubkova, Natalia V., Agakhanov, Atali A., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2018) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VIII. Arsenowagnerite, Mg2(AsO4)F. Mineralogical Magazine, 82 (4) 877-888 doi:10.1180/minmag.2017.081.067
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] | |
| 45b : [Other oxidized fumarolic minerals] |
Geological Setting:
Fumaroles
Type Occurrence of Arsenowagnerite
General Appearance of Type Material:
As equant to tabular crystals up to 1 mm across combined in interrupted crusts up to 0.1 x 1.5 x 3 cm
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4673/1
Empirical Formula of Type Material:
(Mg1.98Cu0.02Mn0.01Ca0.01)Σ2.02(As0.99P0.01)Σ1.00O4.03F0.97
Chemical Analysis of Type Material:
| MgO | 38.72 % |
|---|---|
| CaO | 0.23 % |
| MnO | 0.32 % |
| CuO | 0.60 % |
| ZnO | 0.05 % |
| Fe2O3 | 0.11 % |
| TiO2 | 0.03 % |
| SiO2 | 0.08 % |
| P2O5 | 0.18 % |
| V2O5 | 0.03 % |
| As2O5 | 54.96 % |
| SO3 | 0.10 % |
| F | 8.91 % |
| –O=F | -3.75 % |
| Total: | 100.57 % |
Geological Setting of Type Material:
Fumarole
Associated Minerals at Type Locality:
Reference:
Pekov, Igor V., Zubkova, Natalia V., Agakhanov, Atali A., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2018) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VIII. Arsenowagnerite, Mg2(AsO4)F. Mineralogical Magazine, 82 (4) 877-888 doi:10.1180/minmag.2017.081.067
Synonyms of Arsenowagnerite
Other Language Names for Arsenowagnerite
Relationship of Arsenowagnerite to other Species
Member of:
Other Members of Wagnerite Group:
| Hydroxylwagnerite | Mg2(PO4)(OH) | Mon. 2/m : P21/b |
| Joosteite | Mn2+(Mn3+,Fe3+)(PO4)O | Mon. 2/m |
| Sarkinite | Mn2+2(AsO4)(OH) | Mon. 2/m : P21/b |
| Stanĕkite | (Mn2+,Fe2+,Mg)Fe3+(PO4)O | Mon. 2/m : P21/b |
| Wagnerite | Mg2(PO4)F | Mon. 2/m : P21/b |
| 'Wagnerite-Arsenowagnerite Series' |
Forms a series with:
Common Associates
Related Minerals - Strunz-mindat Grouping
| 8.BB. | Moabite | NiFe3+(PO4)O |
| 8.BB. | Tilasite | CaMg(AsO4)F |
| 8.BB. | Paulgrothite | Cu9Fe3+O4(PO4)4Cl3 |
| 8.BB. | Karlditmarite | Cu9O4(PO4)2(SO4)2 |
| 8.BB. | Milkovoite | Cu4O(PO4)(AsO4) |
| 8.BB.05 | Tavorite | LiFe3+(PO4)(OH) |
| 8.BB.05 | Amblygonite | LiAl(PO4)F |
| 8.BB.05 | Montebrasite | LiAl(PO4)(OH) |
| 8.BB.10 | Zwieselite | Fe2+2(PO4)F |
| 8.BB.10 | Triplite | Mn2+2(PO4)F |
| 8.BB.15 | 'Unnamed (Sb-analogue of Auriacusite)' | Fe3+Cu2+[(Sb,As)O4]O |
| 8.BB.15 | Joosteite | Mn2+(Mn3+,Fe3+)(PO4)O |
| 8.BB.15 | Hydroxylwagnerite | Mg2(PO4)(OH) |
| 8.BB.15 | Wagnerite | Mg2(PO4)F |
| 8.BB.15 | Stanĕkite | (Mn2+,Fe2+,Mg)Fe3+(PO4)O |
| 8.BB.15 | Triploidite | Mn2+2(PO4)(OH) |
| 8.BB.15 | Sarkinite | Mn2+2(AsO4)(OH) |
| 8.BB.15 | Wolfeite | Fe2+2(PO4)(OH) |
| 8.BB.20 | Holtedahlite | Mg2(PO4)(OH) |
| 8.BB.20 | Satterlyite | (Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6 |
| 8.BB.25 | Althausite | Mg4(PO4)2(OH,O)(F,◻) |
| 8.BB.30 | Zincolivenite | CuZn(AsO4)(OH) |
| 8.BB.30 | Adamite | Zn2(AsO4)(OH) |
| 8.BB.30 | Libethenite | Cu2(PO4)(OH) |
| 8.BB.30 | Zincolibethenite | CuZn(PO4)(OH) |
| 8.BB.30 | Eveite | Mn2+2(AsO4)(OH) |
| 8.BB.30 | Olivenite | Cu2(AsO4)(OH) |
| 8.BB.30 | Auriacusite | Fe3+Cu2+(AsO4)O |
| 8.BB.35 | Paradamite | Zn2(AsO4)(OH) |
| 8.BB.35 | Tarbuttite | Zn2(PO4)(OH) |
| 8.BB.40 | Barbosalite | Fe2+Fe3+2(PO4)2(OH)2 |
| 8.BB.40 | Scorzalite | Fe2+Al2(PO4)2(OH)2 |
| 8.BB.40 | Lazulite | MgAl2(PO4)2(OH)2 |
| 8.BB.40 | Meizhouite | Fe2+V3+2(PO4)2(OH)2 |
| 8.BB.40 | Hentschelite | CuFe3+2(PO4)2(OH)2 |
| 8.BB.40 | Wilhelmkleinite | ZnFe3+2(AsO4)2(OH)2 |
| 8.BB.45 | Dokuchaevite | Cu8O2(VO4)3Cl3 |
| 8.BB.45 | Trolleite | Al4(PO4)3(OH)3 |
| 8.BB.45 | Yaroshevskite | Cu9O2(VO4)4Cl2 |
| 8.BB.50 | Namibite | Cu(BiO)2(VO4)(OH) |
| 8.BB.50 | Aleutite | [Cu5O2](AsO4)(VO4) · (Cu,K,Pb,Rb,Cs,)Cl |
| 8.BB.52a | Ericlaxmanite | Cu4O(AsO4)2 |
| 8.BB.52b | Kozyrevskite | Cu4O(AsO4)2 |
| 8.BB.55 | Phosphoellenbergerite | (Mg,◻)2Mg12(PO4,PO3OH)6(PO3OH,CO3)2(OH)6 |
| 8.BB.55 | Popovite | Cu5O2(AsO4)2 |
| 8.BB.60 | Urusovite | CuAl(AsO4)O |
| 8.BB.65 | Theoparacelsite | Cu3(As2O7)(OH)2 |
| 8.BB.70 | Turanite | Cu5(VO4)2(OH)4 |
| 8.BB.75 | Stoiberite | Cu5(VO4)2O2 |
| 8.BB.80 | Fingerite | Cu11(VO4)6O2 |
| 8.BB.85 | Averievite | Cu6(VO4)2O2Cl2 |
| 8.BB.90 | Richellite | CaFe3+2(PO4)2(OH,F)2 |
| 8.BB.90 | Lipscombite | Fe2+Fe3+2(PO4)2(OH)2 |
| 8.BB.90 | Zinclipscombite | ZnFe3+2(PO4)2(OH)2 |
Fluorescence of Arsenowagnerite
Weak orange-red under short wave UV. None under long wave.
Other Information
IR Spectrum:
Wavenumbers of the strongest absorption bands in the IR spectrum of arsenowagnerite (cm–1) are: 874, 861, 507, 491, and 470.
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 Arsenowagnerite
mindat.org URL:
https://www.mindat.org/min-46580.html
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Please feel free to link to this page.
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References for Arsenowagnerite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 24. Mineralogical Magazine, 79 (2) 247-251 doi:10.1180/minmag.2015.079.2.03
Pekov, Igor V., Zubkova, Natalia V., Agakhanov, Atali A., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Sidorov, Evgeny G., Pushcharovsky, Dmitry Yu. (2018) New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. VIII. Arsenowagnerite, Mg2(AsO4)F. Mineralogical Magazine, 82 (4) 877-888 doi:10.1180/minmag.2017.081.067
Localities for Arsenowagnerite
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.
Russia (TL) | |
| Hålenius et al. (2015) +2 other references |
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Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia