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Khaidarkanite

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Formula:
Na0.34Cu4Al3(OH)14F3 · 2H2O
Lustre:
Vitreous
Hardness:
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.


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Classification of KhaidarkaniteHide

Approved
3.DA.45

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

Physical Properties of KhaidarkaniteHide

Vitreous
Hardness:
2½ on Mohs scale

Optical Data of KhaidarkaniteHide

Type:
Biaxial (+)
RI values:
nα = 1.585 nβ = 1.615 nγ = 1.648
Max Birefringence:
δ = 0.063
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
small

Chemical Properties of KhaidarkaniteHide

Formula:
Na0.34Cu4Al3(OH)14F3 · 2H2O
IMA Formula:
Cu4Al3(OH)14F3 · 2H2O
Idealised Formula:
Cu4Al3(OH)14F3 · 2H2O

Crystallography of KhaidarkaniteHide

Crystal System:
Monoclinic

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.29 (80)
5.589 (90)
4.232 (100)
2.828 (90)
2.362 (100)
1.871 (80)
1.817 (80)

Type Occurrence of KhaidarkaniteHide

Synonyms of KhaidarkaniteHide

Other Language Names for KhaidarkaniteHide

Relationship of Khaidarkanite to other SpeciesHide

Structurally related to group(s):
Cyanotrichite GroupA group of closely related, monoclinic Cu-Al-sulphates.

Related Minerals - Nickel-Strunz GroupingHide

3.DA.05MelanothalliteCu2Cl2OOrth.
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10bClinoatacamiteCu2(OH)3ClMon. 2/m
3.DA.10aHibbingiteFe2+2(OH)3ClOrth.
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3m (3 2/m)
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m (3 2/m) : R3m
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : P3m1
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m (3 2/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6 m2 : P62c
3.DA.30AbhuriteSn21Cl16(OH)14O6Trig.
3.DA.35PonomareviteK4Cu4Cl10OMon.
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.40CalumetiteCu(OH,Cl)2 · 2H2OOrth.
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.55AvdoniniteK2Cu5(OH)4Cl8 · H2OMon. 2/m
3.DA.60DroninoiteNi6Fe2+3(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for KhaidarkaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1999): 128(3): 58-63.
Hager, S. L., Leverett, P. & Williams, P. A. (2009): Possible structural and chemical relationships in the cyanotrichite group. Canadian Mineralogist 47, 635-648.
Mills, S.J., Christy, A.G., Schnyder, C., Favreau, G., Price, J.R. (2015): The crystal structure of camerolaite and structural variation in the cyanotrichite family of merotypes. Mineralogical Magazine, 78, 1527–1552.

Internet Links for KhaidarkaniteHide

Localities for KhaidarkaniteHide

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

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Austria
 
  • Salzburg
    • Hohe Tauern
      • Rauris valley
        • Hüttwinkl valley
          • Alteck - Hoher Sonnblick area
            • Hoher Sonnblick
Schnorrer, G. & Bacher, F. (2000): Die Mineralien von der Sonnblick- Nordwand, Rauris, Salzburg / Österreich - insbesondere der erste Khaidarkanit- Fund in Österreich. Mineralien-Welt, 11 (5), 52-57.
Germany
 
  • Baden-Württemberg
    • Black Forest
      • Wolfach
        • Oberwolfach
          • Rankach valley
U. Kolitsch, J. Gröbner, F. Brandstätter and R. Bayerl (2010): Neufunde aus der Grube Clara im mittleren Schwarzwald (IV): Calcioandyrobertsit, Cotunnit, Gerhardtit, Khaidarkanit, Lukrahnit, Mckinstryit, Moolooit, Rhabdophan-(La), Rouait und Uricit. Lapis 35 (9), 22-27; 62 (in German).
Kyrgyzstan (TL)
 
  • Osh Oblast
    • Alai Range (Alay Range)
      • Fergana Valley
[ZVMO,(1999) 128, n. 3, 58-63; AmMin 85:1322]
Robert Lavinsky specimen
Mineral and/or Locality  
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