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Ponomarevite

Big Photo

Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
© Thomas Witzke

Formula:
K
 
4
Cu
 
4
[O|Cl
 
10
]
System:MonoclinicColour:Red
Hardness:2½
This page provides mineralogical data about Ponomarevite.

Classification of Ponomarevite

IMA status:Approved
Strunz 8th edition ID:3/D.02-10
Nickel-Strunz 10th (pending) edition ID:3.DA.35

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
Dana 8th edition ID:10.6.12.1

10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq
Hey's CIM Ref.:8.2.13

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
2 : Halides of Cu
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Type Occurrence of Ponomarevite

Type Locality:First scoria cone, Northern Breakthrough (North Breach), Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Year of Discovery:1988

Physical Properties of Ponomarevite

Lustre:Vitreous, Greasy
Diaphaneity (Transparency):Transparent
Colour:Red
Streak:Orange-red
Hardness (Mohs):2½

Crystallography of Ponomarevite

Crystal System:Monoclinic
Cell Parameters:a = 14.73Å, b = 14.86Å, c = 8.93Å
β = 104.9°
Ratio:a:b:c = 0.991 : 1 : 0.601
Unit Cell Volume:V 1,888.94 ų (Calculated from Unit Cell)

Optical Data of Ponomarevite

Type:Biaxial (-)
RI values: nα = 1.686 nβ = 1.718 nγ = 1.720
2V:Measured: 28° , Calculated: 26°
Maximum Birefringence:δ = 0.034

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

Chemical Properties of Ponomarevite

Formula:
K
 
4
Cu
 
4
[O|Cl
 
10
]
Essential elements:Cl, Cu, K, O
All elements listed in formula:Cl, Cu, K, O

Relationship of Ponomarevite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.DA.05Melanothallite
Cu
 
2
[O|Cl
 
2
]
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)
 
3
|Cl]
 
2
3.DA.10bBelloite
Cu[OH|Cl]
3.DA.10cHerbertsmithite
Cu
 
3
Zn[(OH)
 
3
|Cl]
 
2
3.DA.10cKapellasite
Cu
 
3
Zn[(OH)
 
3
|Cl]
 
2
3.DA.10cGillardite
Cu
 
3
NiCl
 
2
(OH)
 
6
3.DA.10cHaydeeite
Cu
 
3
Mg(OH)
 
6
Cl
 
2
3.DA.15Claringbullite
Cu
 
4
[(OH)
 
7
|Cl] · nH
 
2
O
3.DA.20Simonkolleite
Zn
 
5
[(OH)
 
8
|Cl
 
2
] · H
 
2
O
3.DA.25Buttgenbachite
Cu
 
19
[(OH)
 
32
|(NO
 
3
)
 
2
|Cl
 
4
] · 2H
 
2
O
3.DA.25Connellite
Cu
 
19
[(OH)
 
32
|SO
 
4
|Cl
 
4
] · 3H
 
2
O
3.DA.30Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
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
[(OH)
 
8
|Cl
 
2
] · 2H
 
2
O
3.DA.55Avdoninite
K
 
2
Cu
 
5
[(OH)
 
4
|Cl
 
8
] · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
8.2.1Nantokite
CuCl
8.2.2Tolbachite
CuCl
 
2
8.2.3Eriochalcite
CuCl
 
2
·2H
 
2
O
8.2.4Atacamite
Cu
 
2
[(OH)
 
3
|Cl]
8.2.5Paratacamite
Cu
 
3
(Cu,Zn)[(OH)
 
3
|Cl]
 
2
8.2.6Botallackite
Cu
 
2
[(OH)
 
3
|Cl]
8.2.7Melanothallite
Cu
 
2
[O|Cl
 
2
]
8.2.8Calumetite
Cu(OH,Cl)
 
2
 · 2H
 
2
O
8.2.9Anthonyite
Cu(OH,Cl)
 
2
 · 3H
 
2
O
8.2.10Claringbullite
Cu
 
4
[(OH)
 
7
|Cl] · nH
 
2
O
8.2.11Marshite
CuI
8.2.12Mitscherlichite
K
 
2
[CuCl
 
4
] · 2H
 
2
O

Other Names for Ponomarevite

Synonyms:
IMA1986-040
Other Languages:
German:Ponomarevit
Russian:Пономаревит
Spanish:Ponomarevita

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 Ponomarevite

Reference List:American Mineralogist (1990): 75: 709.

Boller, H., R. Dilshad and K. Klepp (2005): Ponomarevite, K4Cu4OCl10, a naturally occurring mineral with a [Cu4O] core - ancestor of many synthetic cluster compounds. Acta Cryst. A61, C376.

Doklady Akademii Nauk SSSR: 304(2): 427-430.

Articles/Blogs about Ponomarevite

Internet Links for Ponomarevite

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    Localities for Ponomarevite

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    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Tolbachik volcano
          • Great Fissure (Main Fracture) eruption
            • Northern Breakthrough (North Breach)
    		DAN-SSSR,(1988) 300, 1197-1200
              • Second scoria cone
    Mineral and/or Locality
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