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Zharchikhite
A valid IMA mineral species
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About Zharchikhite
Formula:
AlF(OH)2
Colour:
Colourless
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
2.82 (Calculated)
Crystal System:
Monoclinic
Name:
Named after its discovery locality, Zharchikha Mo deposit, Transbaikalia, Russia.
This page provides mineralogical data about Zharchikhite.
Unique Identifiers
Mindat ID:
4399
Long-form identifier:
mindat:1:1:4399:7
IMA Classification of Zharchikhite
Approved
IMA Formula:
Al(OH)2F
Approval year:
1986
First published:
1988
Classification of Zharchikhite
3.AC.05
3 : HALIDES
A : Simple halides, without H2O
C : M:X = 1:3
3 : HALIDES
A : Simple halides, without H2O
C : M:X = 1:3
10.2.8.1
10 : OXYHALIDES AND HYDROXYHALIDES
2 : A(O,OH)Xq
10 : OXYHALIDES AND HYDROXYHALIDES
2 : A(O,OH)Xq
8.6.1
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
6 : Halides of Al
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Zha | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Zharchikhite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Hardness:
4½ on Mohs scale
Hardness:
VHN100=500 - Vickers
Tenacity:
Very brittle
Cleavage:
Perfect
{010}
{010}
Density:
2.82 g/cm3 (Calculated)
Optical Data of Zharchikhite
Type:
Biaxial (-)
RI values:
nα = 1.532(2) nβ = 1.552(2) nγ = 1.567(2)
2V:
Measured: 80° , Calculated: 80°
Max. Birefringence:
δ = 0.035
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 Âĩm 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.
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 Âĩm 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.
Surface Relief:
Moderate
Dispersion:
medium
Chemistry of Zharchikhite
Mindat Formula:
AlF(OH)2
Element Weights:
Elements listed:
Crystallography of Zharchikhite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 5.1788(4) Å, b = 7.8386(4) Å, c = 5.1624(4) Å
β = 116.276(10)°
β = 116.276(10)°
Ratio:
a:b:c = 0.661 : 1 : 0.659
Unit Cell V:
187.91 Ã
Âģ (Calculated from Unit Cell)
Z:
4
Comment:
Type description gives the following unit-cell parameters (space group P21/a): a = 5.164(1), 7.834(1), c = 5.179(1), Îē = 11.6244(8)°.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.98 Ã | (10) |
| 2.92 Ã | (8) |
| 2.31 Ã | (7) |
| 1.926 Ã | (5) |
| 1.833 Ã | (9) |
| 1.737 Ã | (7) |
| 1.289 Ã | (7) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earthâs earliest Hadean crust | >4.50 |
| 10 : Basalt-hosted zeolite minerals | |
| Stage 3b: Earthâs earliest hydrosphere | >4.45 |
| 16 : Low-? aqueous alteration of Hadean subaerial lithologies (see also #23) |
Type Occurrence of Zharchikhite
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia,
87567.
87567.
Geological Setting of Type Material:
Hydrothermally mineralized fault breccia in trachyte in a
molybdenum deposit.
molybdenum deposit.
Associated Minerals at Type Locality:
Synonyms of Zharchikhite
Other Language Names for Zharchikhite
Common Associates
Related Minerals - Strunz-mindat Grouping
| 3.AC.10 | Molysite | FeCl3 |
| 3.AC.15 | Fluocerite-(Ce) | CeF3 |
| 3.AC.15 | Fluocerite-(La) | LaF3 |
| 3.AC.20 | Gananite | BiF3 |
Other Information
Notes:
does not react with acids, but is mildly soluble in NaOH (heating enhances the dissolution rate).
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 Zharchikhite
mindat.org URL:
https://www.mindat.org/min-4399.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Zharchikhite
Localities for Zharchikhite
Showing 6 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
Germany | |
| Blaà et al. (1996) |
Italy | |
| Russo et al. (2022) |
Namibia | |
| BrandstÃĪtter et al. (2001) |
Russia (TL) | |
| Bolokhontseva S.V. et al. (1988) +2 other references |
| Gurbanov et al. (2008) |
Spain | |
| Valladares et al. (2021) |
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Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-WÞrttemberg, Germany