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Khaidarkanite

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Formula:
Na
 
0.34
Cu
 
4
Al
 
3
(OH)
 
14
F
 
3
· 2H
 
2
O
System:MonoclinicLustre:Vitreous
Hardness:
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.

Classification of Khaidarkanite

IMA status:Approved
Strunz 8th edition ID:3/D.03-50
Nickel-Strunz 10th (pending) edition ID:3.DA.45

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

Type Locality:Khaidarkan Sb-Hg deposit (Chaidarkan), Fergana Valley, Alai Range (Alay Range), Osh Oblast, Kyrgyzstan

Physical Properties of Khaidarkanite

Lustre:Vitreous
Hardness (Mohs):

Crystallography of Khaidarkanite

Crystal System:Monoclinic
X-Ray Powder Diffraction:
d-spacingIntensity
10.29 (80)
5.589 (90)
4.232 (100)
2.828 (90)
2.362 (100)
1.871 (80)
1.817 (80)

Optical Data of Khaidarkanite

Type:Biaxial (+)
RI values: nα = 1.585 nβ = 1.615 nγ = 1.648
Maximum Birefringence:δ = 0.063

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:small

Chemical Properties of Khaidarkanite

Formula:
Na
 
0.34
Cu
 
4
Al
 
3
(OH)
 
14
F
 
3
· 2H
 
2
O
Simplified for copy/paste:Na0.34Cu4Al3(OH)14F3·2H2O
Idealised Formula:
Cu
 
4
Al
 
3
(OH)
 
14
F
 
3
· 2H
 
2
O
Essential elements:Al, Cu, F, H, Na, O
All elements listed in formula:Al, Cu, F, H, Na, O

Relationship of Khaidarkanite to other Species

Structurally related to group(s):
Cyanotrichite Group
Related Minerals - Nickel-Strunz Grouping):

- +
3.DA.05Melanothallite
Cu
 
2
Cl
 
2
O
3.DA.10aAtacamite
Cu
 
2
(OH)
 
3
Cl
3.DA.10bBotallackite
Cu
 
2
(OH)
 
3
Cl
3.DA.10bClinoatacamite
Cu
 
2
(OH)
 
3
Cl
3.DA.10aHibbingite
Fe
2+
2
(OH)
 
3
Cl
3.DA.10aKempite
Mn
2+
2
(OH)
 
3
Cl
3.DA.10cParatacamite
Cu
 
3
(Cu,Zn)(OH)
 
6
Cl
 
2
3.DA.10bBelloite
Cu(OH)Cl
3.DA.10cHerbertsmithite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
3.DA.10cKapellasite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
3.DA.10cGillardite
Cu
 
3
Ni(OH)
 
6
Cl
 
2
3.DA.10cHaydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
3.DA.10dAnatacamite
Cu
 
2
Cl(OH)
 
3
3.DA.15Claringbullite
Cu
 
4
(OH)
 
7
Cl · nH
 
2
O
3.DA.15Barlowite
Cu
 
4
BrF(OH)
 
6
3.DA.20Simonkolleite
Zn
 
5
Cl
 
2
(OH)
 
8
· H
 
2
O
3.DA.25Buttgenbachite
Cu
 
19
(NO
 
3
)
 
2
(OH)
 
32
Cl
 
4
· 2H
 
2
O
3.DA.25Connellite
Cu
 
19
(SO
 
4
)(OH)
 
32
Cl
 
4
· 3H
 
2
O
3.DA.30Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
3.DA.35Ponomarevite
K
 
4
Cu
 
4
Cl
 
10
O
3.DA.40Anthonyite
Cu(OH,Cl)
 
2
· 3H
 
2
O
3.DA.40Calumetite
Cu(OH,Cl)
 
2
· 2H
 
2
O
3.DA.50Bobkingite
Cu
 
5
Cl
 
2
(OH)
 
8
· 2H
 
2
O
3.DA.55Avdoninite
K
 
2
Cu
 
5
(OH)
 
4
Cl
 
8
· H
 
2
O
3.DA.60Droninoite
Ni
 
6
Fe
2+
3
(OH)
 
16
Cl
 
2
· 4H
 
2
O

Other Names for Khaidarkanite

Synonyms:
IMA1998-013
Other Languages:
German:Khaidarkanit
Spanish:Khaidarkanita

Other Information

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

References for Khaidarkanite

Reference List:

- +
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.

Internet Links for Khaidarkanite

Search Engines:
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  • Look for Khaidarkanite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Khaidarkanite details from Handbook of Mineralogy (PDF)
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  • Localities for Khaidarkanite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    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
     
    • Osh Oblast
      • Alai Range (Alay Range)
        • Fergana Valley
    [ZVMO,(1999) 128, n. 3, 58-63; AmMin 85:1322]
    Robert Lavinsky specimen
    Russia
     
    • Northern Region
      • Karelia Republic
        • Ladoga Region
          • Pitkyaranta District (Pitkäranta District)
            • Sortavala
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