Khaidarkanite
A valid IMA mineral species
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About Khaidarkanite
Formula:
Cu4Al3(OH)14F3 · 2H2O
Originally given as Na0.34Cu4Al3(OH)14F3 · 2H2O.
Colour:
Light blue or bright sky-blue
Lustre:
Vitreous
Hardness:
2½
Specific Gravity:
2.84
Crystal System:
Monoclinic
Member of:
Name:
Named after the discovery locality.
Cyanotrichite Group.
Visually similar to cyanotrichite and carbonatecyantrichite.
A small amount of sulphate may be present (or even necessary) in khaidarkanite; the Na content may be variable (Hager et al., 2009). Hager et al. (2009) attributed the Na content to impurities. The current (2022) IMA formula has no Na.
Visually similar to cyanotrichite and carbonatecyantrichite.
A small amount of sulphate may be present (or even necessary) in khaidarkanite; the Na content may be variable (Hager et al., 2009). Hager et al. (2009) attributed the Na content to impurities. The current (2022) IMA formula has no Na.
Unique Identifiers
Mindat ID:
7135
Long-form identifier:
mindat:1:1:7135:8
IMA Classification of Khaidarkanite
Approved
IMA Formula:
Cu2+4Al3(OH)14F3·2H2O
Approval year:
1998
First published:
1999
Classification of Khaidarkanite
3.DA.45
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
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 |
|---|---|---|
| Kdk | 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 Khaidarkanite
Vitreous
Colour:
Light blue or bright sky-blue
Streak:
Light blue
Hardness:
2½ on Mohs scale
Density:
2.84 g/cm3 (Measured) 3.00 g/cm3 (Calculated)
Optical Data of Khaidarkanite
Type:
Biaxial (+)
RI values:
nα = 1.585(2) nβ = 1.615(3) nγ = 1.648(2)
2V:
Calculated: 80° to 90°
Max. Birefringence:
δ = 0.063
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:
Moderate
Dispersion:
small
Pleochroism:
Visible
Comments:
X = colorless, Y = sky blue, Z = bright blue, Z > Y > X
Chemistry of Khaidarkanite
Mindat Formula:
Cu4Al3(OH)14F3 · 2H2O
Originally given as Na0.34Cu4Al3(OH)14F3 · 2H2O.
Originally given as Na0.34Cu4Al3(OH)14F3 · 2H2O.
Element Weights:
Crystallography of Khaidarkanite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 12.346(3) Å, b = 2.907(3) Å, c = 10.369(7) Å
β = 97.90(2)°
β = 97.90(2)°
Ratio:
a:b:c = 4.247 : 1 : 3.567
Unit Cell V:
368.61 ų (Calculated from Unit Cell)
Z:
1
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0019201 | Khaidarkanite | Hager S L, Leverett P, Williams P A (2009) Possible structural and chemical relationships in the cyanotrichite group The Canadian Mineralogist 47 635-648 |  | 2009 | Khaidarkan, Kyrgyzstan | 0 | 293 |
| 0012502 | Khaidarkanite | Rastsvetaeva R K, Chukanov N V, Karpenko V Y (1997) Crystal structure of new native compound Cu4Al3(OH)14F3(H2O)2 Doklady Chemistry 353 45-48 | 1997 | Khaidarkan, Kyrgyzstan | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.29 Å | (80) |
| 5.589 Å | (90) |
| 4.232 Å | (100) |
| 2.828 Å | (90) |
| 2.362 Å | (100) |
| 1.871 Å | (80) |
| 1.817 Å | (80) |
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 Khaidarkanite
General Appearance of Type Material:
Flat, acicular crystals up to 0.03 × 0.05 × 7 mm, as radial aggregates up to 1 mm across, and as fibrous aggregates.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, and in the S.V. Tsaregorodtsev collection at the Ilmenskii Reservation, South Urals, Russia.
Geological Setting of Type Material:
oxidation zone of antimony-mercury deposit
Associated Minerals at Type Locality:
Synonyms of Khaidarkanite
Other Language Names for Khaidarkanite
Relationship of Khaidarkanite to other Species
Member of:
Other Members of Cyanotrichite Group:
| Camérolaite | Cu6Al3(OH)18(H2O)2[Sb(OH)6](SO4) | Tric. 1 : P1 |
| Carbonatecyanotrichite | Cu4Al2(CO3,SO4)(OH)12 · 2H2O | Mon. 2/m : B2/m |
| Cyanotrichite | Cu4Al2(SO4)(OH)12 · 2H2O | Mon. 2/m : B2/m |
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 3.DA. | Parahibbingite | Fe2(OH)3Cl |
| 3.DA. | Centennialite | CaCu3Cl2(OH)6 · nH2O (n ~ 0.7) |
| 3.DA. | Bounahasite | Cu+Cu2+2(OH)3Cl2 |
| 3.DA. | Muonionalustaite | Ni3(OH)4Cl2 · 4H2O |
| 3.DA.05 | Melanothallite | Cu2Cl2O |
| 3.DA.10c | Haydeeite | Cu3Mg(OH)6Cl2 |
| 3.DA.10b | Clinoatacamite | Cu2(OH)3Cl |
| 3.DA.10c | Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 |
| 3.DA.10c | Kapellasite | Cu3Zn(OH)6Cl2 |
| 3.DA.10c | Leverettite | Cu3Co(OH)6Cl2 |
| 3.DA.10a | Hibbingite | Fe2+2(OH)3Cl |
| 3.DA.10c | Paratacamite-(Ni) | Cu3(Ni,Cu)(OH)6Cl2 |
| 3.DA.10a | Kempite | Mn2+2(OH)3Cl |
| 3.DA.10c | Tondiite | Cu3Mg(OH)6Cl2 |
| 3.DA.10a | Atacamite | Cu2(OH)3Cl |
| 3.DA.10b | Belloite | Cu(OH)Cl |
| 3.DA.10c | Misakiite | Cu3Mn(OH)6Cl2 |
| 3.DA.10b | Iyoite | MnCuCl(OH)3 |
| 3.DA.10c | Kuliginite | Fe3Mg(OH)6Cl2 |
| 3.DA.10c | Gillardite | Cu3Ni(OH)6Cl2 |
| 3.DA.10b | 'Unnamed (Cu-Zn Chloride Hydroxide)' | CuZnCl(OH)3 |
| 3.DA.10b | Botallackite | Cu2(OH)3Cl |
| 3.DA.10c | Herbertsmithite | Cu3Zn(OH)6Cl2 |
| 3.DA.15 | Claringbullite | Cu4ClF(OH)6 |
| 3.DA.15 | Barlowite | Cu4BrF(OH)6 |
| 3.DA.20 | Simonkolleite | Zn5Cl2(OH)8 · H2O |
| 3.DA.25 | Buttgenbachite | Cu19(NO3)2(OH)32Cl4 · 2H2O |
| 3.DA.25 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O |
| 3.DA.30 | Abhurite | Sn21Cl16(OH)14O6 |
| 3.DA.35 | Ponomarevite | K4Cu4Cl10O |
| 3.DA.40 | Calumetite | CaCu4(OH)8Cl2 · 3.5H2O |
| 3.DA.40 | Anthonyite | Cu(OH,Cl)2 · 3H2O |
| 3.DA.50 | Bobkingite | Cu5Cl2(OH)8 · 2H2O |
| 3.DA.55 | Avdoninite | K2Cu5(OH)4Cl8 · H2O |
| 3.DA.60 | Droninoite | Ni6Fe3+2(OH)16Cl2 · 4H2O |
| 3.DA.70 | Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O |
| 3.DA.70 | Dioskouriite | CaCu4Cl6(OH)4 · 4H2O |
| 3.DA.75 | Feodosiyite | Cu11Mg2Cl18(OH)8 · 16H2O |
| 3.DA.80 | Romanorlovite | K8Cu6Cl17(OH)3 |
Other Information
IR Spectrum:
Absorption bands at 3490, 3400, 3190, 1630, 1560, 1135, 1101, 1036, 930, 885, 744, 658, 574, 508, and 452 cm–1
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 Khaidarkanite
mindat.org URL:
https://www.mindat.org/min-7135.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Khaidarkanite
Reference List:
Jambor, John L., Pertsev, Nikolai N., Roberts, Andrew C. (2000) New Mineral Names. American Mineralogist, 85. 1321-1325
Hager, S. L., Leverett, P., Williams, P. A. (2009) Possible Structural and Chemical Relationships in the Cyanotrichite Group. The Canadian Mineralogist, 47 (3) 635-648 doi:10.3749/canmin.47.3.635
Localities for Khaidarkanite
Showing 7 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.
Austria | |
| Schnorrer et al. (2000) |
Germany | |
| Kolitsch et al. (2010) |
| Found by and in the collection of H.-J. ... |
Italy | |
| Bortolozzi et al. (2018) |
Kyrgyzstan (TL) | |
| Chukanov et al. (1999) +1 other reference |
| Robert Lavinsky specimen | |
UK | |
| Cotterell et al. (2018) |
Quick NavTopAbout KhaidarkaniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Mednaya Gorka, Khaidarkan Sb-Hg deposit, Aydarken, Kadamjay District, Batken Region, Kyrgyzstan