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
GUID
(UUID V4):
(UUID V4):
8a7831cc-3940-4b4e-9f89-272bb34ceef6
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 IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Zha | 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 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
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
medium
Chemistry of Zharchikhite
Mindat Formula:
AlF(OH)2
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 ų (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), β = 11.6244(8)°.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.98 Å | (10) |
2.92 Å | (8) |
2.31 Å | (7) |
1.926 Å | (5) |
1.833 Å | (9) |
1.737 Å | (7) |
1.289 Å | (7) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earth’s earliest Hadean crust | >4.50 |
10 : Basalt-hosted zeolite minerals | |
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
16 : Low-𝑇 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.
Associated Minerals at Type Locality:
Reference:
Bolokhontseva S.V., Baturin S.V., Ilmeyev E.S., Papova M.A., Purusova S.P. (1988) Zharchikhite AlF(OH)2 - a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 117: 79-83.
Synonyms of Zharchikhite
Other Language Names for Zharchikhite
German:Zharchikhit
Spanish:Zharchikhita
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
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
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Please feel free to link to this page.
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References for Zharchikhite
Localities for Zharchikhite
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).
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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Germany | |
| Blaß et al. (1996) |
Italy | |
| Russo et al. (2022) |
Namibia | |
| Brandstätter et al. (2001) |
Russia (TL) | |
| Bolokhontseva S.V. et al. (1988) +2 other references |
| Gurbanov et al. (2008) |
Spain | |
| Georges Favreau collection |
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Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany