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Ikaite

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Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Adam's Minerals

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Formula:
CaCO
 
3
·6H
 
2
O
System:Monoclinic
This page provides mineralogical data about Ikaite.

Classification of Ikaite

IMA status:Approved
Strunz 8th edition ID:5/D.01-60
Nickel-Strunz 10th (pending) edition ID:5.CB.25

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
B : With large cations (alkali and alkali-earth carbonates)
Dana 8th edition ID:15.1.4.1

15 : HYDRATED NORMAL CARBONATES
1 : A(XO3)·xH2O
Hey's CIM Ref.:11.4.5

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

Type Locality:Ikka-Grønnedal complex, Ikka Firth, Ivittuut (Ivigtut), Arsuk Firth, Arsuk, Kitaa (West Greenland) Province, Greenland
Year of Discovery:1962

Crystallography of Ikaite

Crystal System:Monoclinic
Cell Parameters:a = 8.87Å, b = 8.23Å, c = 11.02Å
β = 110.2°
Ratio:a:b:c = 1.078 : 1 : 1.339
Unit Cell Volume:V 754.98 ų (Calculated from Unit Cell)

Optical Data of Ikaite

Type:Biaxial (-)
RI values: nα = 1.455 nβ = 1.538 nγ = 1.545
2V:Measured: 45° , Calculated: 30°
Maximum Birefringence:δ = 0.090

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

Chemical Properties of Ikaite

Formula:
CaCO
 
3
·6H
 
2
O
Essential elements:C, Ca, H, O
All elements listed in formula:C, Ca, H, O

Relationship of Ikaite to other Species

Related Minerals - Nickel-Strunz Grouping):
5.CB.05Thermonatrite
Na
 
2
CO
 
3
·H
 
2
O
5.CB.10Natron
Na
 
2
CO
 
3
·10H
 
2
O
5.CB.15Trona
Na
 
3
H(CO
 
3
)
 
2
·2H
 
2
O
5.CB.20Monohydrocalcite
CaCO
 
3
·H
 
2
O
5.CB.30Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
·2H
 
2
O
5.CB.35Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
·5H
 
2
O
5.CB.40Chalconatronite
Na
 
2
Cu(CO
 
3
)
 
2
·3H
 
2
O
5.CB.45Baylissite
K
 
2
Mg(CO
 
3
)
 
2
·4H
 
2
O
5.CB.50Tuliokite
Na
 
6
BaTh(CO
 
3
)
 
6
·6H
 
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
11.4.6Dolomite
CaMg(CO
 
3
)
 
2
11.4.7Huntite
CaMg
 
3
(CO
 
3
)
 
4
11.4.8Sergeevite
Ca
 
2
Mg
 
11
(CO
 
3
)
 
13
·10H
 
2
O

Other Names for Ikaite

Synonyms:
IMA1962-005
German names:
Ikait
Russian names:
Икаит
Spanish names:
Ikaita

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 Ikaite

Reference List:American Mineralogist (1964): 49: 439.

Zeitschrift für Kristallographie: 163: 227-231.

Internet Links for Ikaite

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  • Raman and XRD data at RRUFF project
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    Localities for Ikaite

    (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.
    Antarctica
     
    • Western Antarctica
      • Antarctic Peninsula
    		AmMin 86:1530-1533 (2001)
    Greenland
     
    • Kitaa (West Greenland) Province
      • Arsuk
        • Arsuk Firth
          • Ivittuut (Ivigtut)
            • Ikka Firth
    		Am Min 49 (1964), 439
    Japan
     
    • Hokkaido Island
    		Genko. 91(6). 209-219
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    		www.koeln.netsurf.de/~w.steffens/khib.htm
    USA
     
    • California
      • Mono Co.
    		Geology 21:971-974.
    Mineral and/or Locality
    Google
     
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