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Kapellasite

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Big Photo

Herzog Julius smelter (slag locality), Astfeld, Goslar, Harz, Lower Saxony, Germany
© Stephan Wolfsried

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Formula:
Cu
 
3
Zn(OH)
 
6
Cl
 
2
System:Trigonal
Member of:Atacamite Group
Name:Named after Christo Kapellas (1938-2004), collector and mineral dealer of Kamariza, Lavrion, Greece.
Isostructural with:Haydeeite


Atacamite Group.
A metastable polymorph of Herbertsmithite. Has been confused with Botallackite ("Zn-bearing botallackite"; Wendel et al., 1999); both are visually very similar.
Also known as a synthetic compound (phase IIα of Feitknecht and Maget, 1949).

The Mg analogue of kapellasite is called haydeeite.

Classification of Kapellasite

IMA status:Approved 2005
Strunz 8th edition ID:3/D.01-58
Nickel-Strunz 10th (pending) edition ID:3.DA.10c

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

Type Locality:Sounion Mine No. 19 ("Chloridstollen"), Sounion Mines, Sounion area, Lavrion District Mines, Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece

Crystallography of Kapellasite

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:P3m1 {P3 2/m 1}
Cell Parameters:a = 6.3Å, c = 5.733Å
Ratio:a:c = 1 : 0.91
Unit Cell Volume:V 197.06 ų
Z:1
X-Ray Powder Diffraction:
d-spacingIntensity
5.73(100)
2.865(11)
2.761(12)
2.730(39)
2.464(81)
1.976(32)
1.576(17)
1.519(10)
Comments:From type description

Chemical Properties of Kapellasite

Formula:
Cu
 
3
Zn(OH)
 
6
Cl
 
2
Essential elements:Cl, Cu, H, O, Zn
All elements listed in formula:Cl, Cu, H, O, Zn

Relationship of Kapellasite to other Species

Member of:Atacamite Group
Other Members of Group:

- +
Anatacamite
Cu
 
2
Cl(OH)
 
3
Atacamite
Cu
 
2
(OH)
 
3
Cl
Botallackite
Cu
 
2
(OH)
 
3
Cl
Clinoatacamite
Cu
 
2
(OH)
 
3
Cl
Gillardite
Cu
 
3
Ni(OH)
 
6
Cl
 
2
Haydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
Herbertsmithite
Cu
 
3
Zn(OH)
 
6
Cl
 
2
Paratacamite
Cu
 
3
(Cu,Zn)(OH)
 
6
Cl
 
2
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.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.45Khaidarkanite
Na
 
0.34
Cu
 
4
Al
 
3
(OH)
 
14
F
 
3
 · 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 Kapellasite

Synonyms:
IMA2005-009
Other Languages:
German:Kapellasit

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 Kapellasite

Reference List:

- +
Feitknecht, W. and Maget, K. (1949): Über Doppelhydroxyde und basische Doppelsalze. Über basische Doppelchloride des Kupfers. Helvetica Chimica Acta, 32, 1653-1667 (in German).

Wendel, W., Blaß, G., Mühlbauer, W. and Markl, G. (1999) Hilarion - Plaka - Sounion: Laurion News 1997-1999. Lapis, 24(7), 64-67 (in German).

W. Krause, H.-J. Bernhardt, R. S. W. Braithwaite, U. Kolitsch and R. Pritchard (2006): Kapellasite, Cu3Zn(OH)6Cl2, a new mineral from Lavrion, Greece. Mineral. Mag. 70, 329-340.

Internet Links for Kapellasite

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    • Localities for Kapellasite

    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.
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    (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.
    Germany
     
    • Lower Saxony
      • Harz
        • Goslar
          • Astfeld
    		W. Krause, H.-J. Bernhardt, R. S. W. Braithwaite, U. Kolitsch and R. Pritchard (2006): Kapellasite, Cu3Zn(OH)6Cl2, a new mineral from Lavrion, Greece. Mineral. Mag. 70, 329-340.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Sounion area
            • Sounion Mines
    		W. Krause, H.-J. Bernhardt, R. S. W. Braithwaite, U. Kolitsch and R. Pritchard (2006): Kapellasite, Cu3Zn(OH)6Cl2, a new mineral from Lavrion, Greece. Mineral. Mag. 70, 329-340.
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