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Krivovichevite

Formula:
Pb
 
3
[Al(OH)
 
6
](SO
 
4
)(OH)
System:TrigonalColour:Colourless
Hardness:3
Name:Honouring Sergey Vladimirovich Krivovichev, Russian mineralogist and crystallographer, Professor at St. Petersburg State University.


Chemically related to minerals of the Beudantite Group and Alunite Group.

Classification of Krivovichevite

IMA status:Approved 2004
Strunz 8th edition ID:6/B.0-
Strunz 9th edition ID:7.B0.
Nickel-Strunz 10th (pending) edition ID:7.BC.75

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
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Type Occurrence of Krivovichevite

Type Locality:Lepkhe-Nel'm Mt. (Lepkhe-Nelm Mt.), Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
General Appearance of Type Material:Equant grains up to 1 cm across within galena aggregates; formed from galena by hydrothermal alteration.
Geological Setting of type material:Natrolite-aegirine-orthoclase vein within Lujavrite
Associated Minerals at type locality:
TitaniteRhabdophane-(Ce)QuartzPolylithioniteOrthoclase
OpalNatroliteMonazite-(La)MicroclineManganoneptunite
Magnesio-arfvedsoniteLeucophaniteLeadhilliteLanarkiteLamprophyllite
KupletskiteHydrocerussiteHeulandite-SrHeulandite-CaHalloysite
GalenaFluoriteApatite-(CaF)CerussiteArsenopyrite
AnglesiteAnataseAegirine

Physical Properties of Krivovichevite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless
Streak:White
Hardness (Mohs):3
Tenacity:Brittle
Cleavage:None Observed
Fracture:Conchoidal

Crystallography of Krivovichevite

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:R3c
Cell Parameters:a = 7.693(8) Å, c = 31.57(9) Å
Ratio:a:c = 1 : 4.104
Unit Cell Volume:V 1618 ų
Z:6
X-Ray Powder Diffraction:
d-spacingIntensity
3.58(100)
3.10(60)
2.591(90)
2.216(50)
2.048(70)
1.893(50)
1.859(40)
Comments:From type description.

Optical Data of Krivovichevite

Type:Uniaxial (-)
RI values: n = 1.9
Maximum Birefringence:δ = 0.000

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Pleochroism:Non-pleochroic

Chemical Properties of Krivovichevite

Formula:
Pb
 
3
[Al(OH)
 
6
](SO
 
4
)(OH)
Essential elements:
All elements listed in formula:Al, H, O, Pb, S
Analyical Data:Results from electron microprobe analysis; H2O determined by Penfield's method.
Empirical formula calculated on the basis of Pb + Ca + Al + S = 5 apfu.
PbO   (76.49)
CaO    (0.02)
Al2O3  (5.38)
SO3    (9.27)
H2O    (7.20)

Total  98.36 wt.-%
Empirical Formula:
Pb
 
3.04
Al
 
0.94
(S
 
1.03
O
 
3.98
)(OH)
 
7.08

Relationship of Krivovichevite 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.45Klyuchevskite
K
 
3
Cu
 
3
(Fe
3+
 
,Al)[O|(SO
 
4
)
 
2
]
 
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.80Anhydrokainite
KMgClSO
 
4

Other Names for Krivovichevite

Synonyms:
IMA2004-053

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 Krivovichevite

Reference List:Yakovenchuk, V.N., Pakhomovsky, Ya.A., Men’shikov, Yu.P., Mikhailova, J.A., and Ivanyuk, G.Yu. (2007): Krivovichevite, Pb3[Al(OH)6](SO4)(OH), a new mineral from the Lovozero alkaline massif, Kola Peninsula, Russia. Canadian Mineralogist 45, 451-456.

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    Localities for Krivovichevite

    (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
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
            • Seidozero Lake
    		Yakovenchuk, V.N., Pakhomovsky, Ya.A., Men’shikov, Yu.P., Mikhailova, J.A., and Ivanyuk, G.Yu. (2007): Canadian Mineralogist 45, 451-456.
    Mineral and/or Locality
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