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⇱ Khaidarkanite: Mineral information, data and localities.

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Khaidarkanite

A valid IMA mineral species
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About KhaidarkaniteHide

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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
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.


Unique IdentifiersHide

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Mindat ID:
7135
Long-form identifier:
mindat:1:1:7135:8

IMA Classification of KhaidarkaniteHide

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Approved
First published:
1999

Classification of KhaidarkaniteHide

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3.DA.45

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
KdkIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of KhaidarkaniteHide

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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 KhaidarkaniteHide

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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.

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.

Surface Relief:
Moderate
Dispersion:
small
Pleochroism:
Visible
Comments:
X = colorless, Y = sky blue, Z = bright blue, Z > Y > X

Chemistry of KhaidarkaniteHide

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Mindat Formula:
Cu4Al3(OH)14F3 · 2H2O

Originally given as Na0.34Cu4Al3(OH)14F3 · 2H2O.
Element Weights:
Element% weight
O38.422 %
Cu38.151 %
Al12.149 %
F8.555 %
H2.723 %

Calculated from ideal end-member formula.

Crystallography of KhaidarkaniteHide

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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)°
Ratio:
a:b:c = 4.247 : 1 : 3.567
Unit Cell V:
368.61 ų (Calculated from Unit Cell)
Z:
1

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0019201KhaidarkaniteHager S L, Leverett P, Williams P A (2009) Possible structural and chemical relationships in the cyanotrichite group The Canadian Mineralogist 47 635-648👁 Image
2009Khaidarkan, Kyrgyzstan0293
0012502KhaidarkaniteRastsvetaeva R K, Chukanov N V, Karpenko V Y (1997) Crystal structure of new native compound Cu4Al3(OH)14F3(H2O)2 Doklady Chemistry 353 45-481997Khaidarkan, Kyrgyzstan0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

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Paragenetic Mode(s):
Paragenetic ModeEarliest 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 KhaidarkaniteHide

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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 KhaidarkaniteHide

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Other Language Names for KhaidarkaniteHide

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Relationship of Khaidarkanite to other SpeciesHide

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Other Members of Cyanotrichite Group:
CamérolaiteCu6Al3(OH)18(H2O)2[Sb(OH)6](SO4)Tric. 1 : P1
CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2OMon. 2/m : B2/m
CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2OMon. 2/m : B2/m

Common AssociatesHide

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Associations Based on Photo Data:
2 photos of Khaidarkanite associated with FluoriteCaF2
2 photos of Khaidarkanite associated with AzuriteCu3(CO3)2(OH)2
1 photo of Khaidarkanite associated with Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
1 photo of Khaidarkanite associated with ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1

Related Minerals - Strunz-mindat GroupingHide

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3.DA.ParahibbingiteFe2(OH)3ClTrig. 3m(32/m) : R3m
3.DA.CentennialiteCaCu3Cl2(OH)6 · nH2O (n ~ 0.7)Trig. 3m(32/m) : P3m1
3.DA.BounahasiteCu+Cu2+2(OH)3Cl2Mon. 2/m
3.DA.MuonionalustaiteNi3(OH)4Cl2 · 4H2OMon. 2/m : B2/m
3.DA.05MelanothalliteCu2Cl2OOrth. mmm(2/m2/m2/m) : Fddd
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10bClinoatacamiteCu2(OH)3ClMon. 2/m
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3 : R3
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10cLeverettiteCu3Co(OH)6Cl2Trig. 3 : R3
3.DA.10aHibbingiteFe2+2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10cParatacamite-(Ni)Cu3(Ni,Cu)(OH)6Cl2Trig. 3 : R3
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10cTondiiteCu3Mg(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cMisakiiteCu3Mn(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10bIyoiteMnCuCl(OH)3Mon. 2/m : P21/m
3.DA.10cKuliginiteFe3Mg(OH)6Cl2Trig. 3 : R3
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.10b'Unnamed (Cu-Zn Chloride Hydroxide)'CuZnCl(OH)3Mon. 2/m : P21/m
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m(32/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6m2 : P62c
3.DA.30AbhuriteSn21Cl16(OH)14O6Trig. 32 : R32
3.DA.35PonomareviteK4Cu4Cl10OMon. 2/m : B2/b
3.DA.40CalumetiteCaCu4(OH)8Cl2 · 3.5H2OOrth. mmm(2/m2/m2/m) : Cmcm
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.55AvdoniniteK2Cu5(OH)4Cl8 · H2OMon. 2/m : P21/b
3.DA.60DroninoiteNi6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m(32/m) : R3m
3.DA.70ChrysothalliteK6Cu6Tl3+Cl17(OH)4 · H2OTet. 4/mmm(4/m2/m2/m) : I4/mmm
3.DA.70DioskouriiteCaCu4Cl6(OH)4 · 4H2OMon. 2/m : P21/b
3.DA.75FeodosiyiteCu11Mg2Cl18(OH)8 · 16H2OMon. 2/m : P21/b
3.DA.80RomanorloviteK8Cu6Cl17(OH)3Tet. 4/mmm(4/m2/m2/m) : I4/mmm

Other InformationHide

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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 KhaidarkaniteHide

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mindat.org URL:
https://www.mindat.org/min-7135.html
Please feel free to link to this page.

References for KhaidarkaniteHide

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Reference List:

Localities for KhaidarkaniteHide

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Showing 8 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- 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.
Austria
  • Salzburg
    • Zell am See District
      • Rauris
        • Alteck - Hoher Sonnblick area
          • Hoher Sonnblick
Schnorrer et al. (2000)
Germany
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Oberwolfach
Kolitsch et al. (2010)
  • Saxony-Anhalt
    • Harz
      • Thale
        • Thale
Found by and in the collection of H.-J. ...
Haas et al. (06/2025)
Italy
  • Friuli Venezia Giulia
    • Udine Province
Bortolozzi et al. (2018)
Kyrgyzstan (TL)
  • Batken Region
    • Kadamjay District
      • Aydarken
Chukanov et al. (1999) +1 other reference
Robert Lavinsky specimen
UK
  • England
    • North Yorkshire
      • Richmondshire
        • Muker
Cotterell et al. (2018)
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