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Sergeevite

Formula:
Ca
 
2
Mg
 
11
(CO
 
3
)
 
13
·10H
 
2
O
Colour:WhiteHardness:3½
Name:Named after Evgeneii Mikhailovich Sergeev (b 1924), Professor of Geology.
This page provides mineralogical data about Sergeevite.

Classification of Sergeevite

IMA status:Approved
Strunz 8th edition ID:5/E.03-80
Nickel-Strunz 10th (pending) edition ID:5.DB.25

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
B : With large and medium-sized cations
Dana 8th edition ID:13.1.7.1

13 : ACID CARBONATES
1 : Miscellaneous
Hey's CIM Ref.:11.4.8

11 : Carbonates
4 : Carbonates of Ca
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Type Occurrence of Sergeevite

Type Locality:Malyi Mukulan Sn Mine, Tyrnyauz Mo-W deposit, Baksan Valley, Kabardino-Balkarian Republic, Northern Caucasus Region, Russia

Physical Properties of Sergeevite

Lustre:Dull
Colour:White
Hardness (Mohs):3½

Optical Data of Sergeevite

Type:Uniaxial
RI values: nα = 1.571 nβ = 1.581
Maximum Birefringence:δ = 1.571

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

Chemical Properties of Sergeevite

Formula:
Ca
 
2
Mg
 
11
(CO
 
3
)
 
13
·10H
 
2
O
Essential elements:C, Ca, H, Mg, O
All elements listed in formula:C, Ca, H, Mg, O

Relationship of Sergeevite to other Species

Related Minerals - Nickel-Strunz Grouping):
5.DB.05Alumohydrocalcite
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
·3H
 
2
O
5.DB.05Nasledovite
PbMn
 
3
Al
 
4
(CO
 
3
)
 
4
SO
 
4
O
 
5
·5H
 
2
O
5.DB.05Para-alumohydrocalcite
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
·6H
 
2
O
5.DB.10Dresserite
BaAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
5.DB.10Dundasite
PbAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
5.DB.10Montroyalite
Sr
 
4
Al
 
8
[(OH,F)
 
26
|(CO
 
3
)
 
3
] · 10-11H
 
2
O
5.DB.10Strontiodresserite
(Sr,Ca)Al
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · H
 
2
O
5.DB.10Petterdite
PbCr
3+
2
(CO
 
3
)
 
2
(OH)
 
4
·H
 
2
O
5.DB.10Kochsándorite
CaAl
 
2
(CO
 
3
)
 
2
(OH)
 
4
 · H
 
2
O
5.DB.15Hydrodresserite
BaAl
 
2
[(OH)
 
2
|CO
 
3
]
 
2
 · 3H
 
2
O
5.DB.20Schuilingite-(Nd)
PbCu(Nd,Gd,Sm,Y)(CO
 
3
)
 
3
(OH)·1.5H
 
2
O
5.DB.30Szymańskiite
Hg
 
16
(Ni,Mg)
 
6
(CO
 
3
)
 
12
(OH)
 
12
(H
 
3
O)
 
8
·3H
 
2
O
Related Minerals - Hey's Index Grouping:
11.4.1Calcite
CaCO
 
3
11.4.2Aragonite
CaCO
 
3
11.4.3Vaterite
CaCO
 
3
11.4.4Monohydrocalcite
CaCO
 
3
·H
 
2
O
11.4.5Ikaite
CaCO
 
3
·6H
 
2
O
11.4.6Dolomite
CaMg(CO
 
3
)
 
2
11.4.7Huntite
CaMg
 
3
(CO
 
3
)
 
4

Other Names for Sergeevite

Synonyms:
IMA1979-038
German names:
Sergeevit
Spanish names:
Sergeevita

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 Sergeevite

Reference List:American Mineralogist (1981): 66: 1100.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva : 109(2): 217-223.

Internet Links for Sergeevite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Sergeevite in the Natural History Museum (London) online catalogue
  • Sergeevite details from Handbook of Mineralogy (PDF)
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    Localities for Sergeevite

    (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 Caucasus Region
      • Kabardino-Balkarian Republic
        • Baksan valley
          • Tyrnyauz Mo-W deposit
    		ZVMO 109 (1980), 217; AM 66 (1981), 1100
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