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Klyuchevskite

Formula:
K
 
3
Cu
 
3
(Fe
3+
 
,Al)[O|(SO
 
4
)
 
2
]
 
2
System:MonoclinicColour:Green
Lustre:VitreousHardness:
This page provides mineralogical data about Klyuchevskite.

Classification of Klyuchevskite

IMA status:Approved 1987
Strunz 8th edition ID:6/B.05-50
Nickel-Strunz 10th (pending) edition ID:7.BC.45

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
Dana 8th edition ID:30.4.1.1

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
4 : Miscellaneous
Hey's CIM Ref.:25.2.26

25 : Sulphates
2 : Sulphates of Cu and Ag
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Type Occurrence of Klyuchevskite

Type Locality:Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Year of Discovery:1989

Physical Properties of Klyuchevskite

Lustre:Vitreous
Colour:Green
Hardness (Mohs):

Crystallography of Klyuchevskite

Crystal System:Monoclinic
Cell Parameters:a = 18.41Å, b = 4.94Å, c = 18.64Å
β = 101.5°
Ratio:a:b:c = 3.727 : 1 : 3.773
Unit Cell Volume:V 1,661.19 ų (Calculated from Unit Cell)

Optical Data of Klyuchevskite

Type:Biaxial (-)
RI values: nα = 1.549 nβ = 1.550 nγ = 1.680
Maximum Birefringence:δ = 0.131

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:none

Chemical Properties of Klyuchevskite

Formula:
K
 
3
Cu
 
3
(Fe
3+
 
,Al)[O|(SO
 
4
)
 
2
]
 
2
Essential elements:Cu, Fe, K, O, S
All elements listed in formula:Al, Cu, Fe, K, O, S
Common Impurities:Pb

Relationship of Klyuchevskite to other Species

Related Minerals - Nickel-Strunz Grouping):
7.BC.05D'Ansite
Na
 
21
Mg(SO
 
4
)
 
10
Cl
 
3
7.BC.10Alunite
KAl
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Ammonioalunite
(NH
 
4
)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Ammoniojarosite
(NH
 
4
)Fe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Argentojarosite
AgFe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Beaverite
Pb(Fe
3+
 
,Cu,Al)
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Dorallcharite
(Tl,K)Fe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Huangite
CaAl
 
6
[(OH)
 
3
|SO
 
4
]
 
4
7.BC.10Hydroniumjarosite
(H
 
3
O)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Jarosite
KFe
3+
 
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Minamiite
(Na,Ca
 
0.5
,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Natroalunite
(Na,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Natrojarosite
NaFe
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Osarizawaite
Pb(Al,Cu)
 
3
[(OH,H
 
2
O)
 
3
|SO
 
4
]
 
2
7.BC.10Plumbojarosite
PbFe
3+
6
[(OH)
 
3
|SO
 
4
]
 
4
7.BC.10Walthierite
BaAl
 
6
[(OH)
 
3
|SO
 
4
]
 
4
7.BC.15Ye'elimite
Ca
 
4
Al
 
6
[O
 
12
|SO
 
4
]
7.BC.20Atlasovite
K(BiO)Cu
 
6
Fe
3+
 
[Cl|O
 
3
|(SO
 
4
)
 
5
]
7.BC.20Nabokoite
KCu
 
7
Te
4+
 
[Cl|O
 
4
|(SO
 
4
)
 
5
]
7.BC.25Chlorothionite
K
 
2
Cu[Cl
 
2
|SO
 
4
]
7.BC.30Euchlorine
KNaCu
 
3
[O|(SO
 
4
)
 
3
]
7.BC.30Fedotovite
K
 
2
Cu
 
3
[O|(SO
 
4
)
 
3
]
7.BC.35Kamchatkite
KCu
 
3
[O|Cl|(SO
 
4
)
 
2
]
7.BC.40Piypite
K
 
2
Cu
 
2
[O|(SO
 
4
)
 
2
]
7.BC.45Alumoklyuchevskite
K
 
3
Cu
 
3
(Al,Fe
3+
 
)[O|(SO
 
4
)
 
2
]
 
2
7.BC.50Caledonite
Cu
 
2
Pb
 
5
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
3
]
7.BC.55Wherryite
Pb
 
4
CuCO
 
3
(SO
 
4
)
 
2
(Cl,OH)
 
2
O
7.BC.60Mammothite
Pb
 
6
Cu
 
4
AlSb[(OH)
 
9
|Cl
 
2
|SO
 
4
]
 
2
7.BC.65Linarite
PbCu[(OH)
 
2
|SO
 
4
]
7.BC.65Schmiederite
Pb
 
2
Cu
 
2
[(OH)
 
4
|SeO
 
3
|SeO
 
4
]
7.BC.65Munakataite
Pb
 
2
Cu
 
2
(Se
4+
 
O
 
3
)(SO
 
4
)(OH)
 
4
7.BC.70Chenite
Pb
 
4
Cu[(OH)
 
3
|SO
 
4
]
 
2
7.BC.75Krivovichevite
Pb
 
3
[Al(OH)
 
6
](SO
 
4
)(OH)
7.BC.80Anhydrokainite
KMgClSO
 
4
Related Minerals - Hey's Index Grouping:
25.2.1Chalcocyanite
CuSO
 
4
25.2.2Bonattite
CuSO
 
4
·3H
 
2
O
25.2.3Chalcanthite
CuSO
 
4
·5H
 
2
O
25.2.4Boothite
CuSO
 
4
·7H
 
2
O
25.2.5Dolerophanite
Cu
 
2
[O|SO
 
4
]
25.2.6Antlerite
Cu
 
3
[(OH)
 
4
|SO
 
4
]
25.2.7Brochantite
Cu
 
4
[(OH)
 
6
|SO
 
4
]
25.2.8Posnjakite
Cu
 
4
[(OH)
 
6
|SO
 
4
] · H
 
2
O
25.2.9Langite
Cu
 
4
[(OH)
 
6
|SO
 
4
] · 2H
 
2
O
25.2.10Wroewolfeite
Cu
 
4
[(OH)
 
6
|SO
 
4
] · 2H
 
2
O
25.2.11Kröhnkite
Na
 
2
Cu(SO
 
4
)
 
2
·2H
 
2
O
25.2.12Natrochalcite
NaCu
 
2
[OH|(SO
 
4
)
 
2
] · 2H
 
2
O
25.2.13Piypite
K
 
2
Cu
 
2
[O|(SO
 
4
)
 
2
]
25.2.14Fedotovite
K
 
2
Cu
 
3
[O|(SO
 
4
)
 
3
]
25.2.15Cyanochroite
K
 
2
Cu(SO
 
4
)
 
2
·6H
 
2
O
25.2.16Euchlorine
KNaCu
 
3
[O|(SO
 
4
)
 
3
]
25.2.17Devilline
CaCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
·3H
 
2
O
25.2.18Leightonite
K
 
2
Ca
 
2
Cu(SO
 
4
)
 
4
·2H
 
2
O
25.2.19Chalcoalumite
CuAl
 
4
[(OH)
 
12
|SO
 
4
] · 3H
 
2
O
25.2.20Cyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|SO
 
4
] · 2H
 
2
O
25.2.21Woodwardite
Cu
 
4
Al
 
2
[(OH)
 
12
|SO
 
4
] · 2-4H
 
2
O
25.2.22Campigliaite
Mn
2+
 
Cu
 
4
[(OH)
 
6
|(SO
 
4
)
 
2
] · 4H
 
2
O
25.2.23Guildite
CuFe
3+
 
[OH|(SO
 
4
)
 
2
] · 4H
 
2
O
25.2.24Ransomite
CuFe
 
2
(SO
 
4
)
 
4
·6H
 
2
O
25.2.27Poitevinite
(Cu,Fe,Zn)SO
 
4
·H
 
2
O
25.2.28Argentojarosite
AgFe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2

Other Names for Klyuchevskite

Synonyms:
IMA1987-027
German names:
Klyuchevskit
Spanish names:
Klyuchevskita

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 Klyuchevskite

Reference List:American Mineralogist (1993): 78: 454.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 118(1): 70-73.

Mineralogical Magazine: 56: 411-416.

Internet Links for Klyuchevskite

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    Localities for Klyuchevskite

    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.
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
        • Tolbachik volcano
    ZVMO,(1989) 118, n1, 70-73
            • Northern Breakthrough (North Breach)
              • Second scoria cone
    Mineral and/or Locality
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