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Kimuraite-(Y)

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Formula:
Ca(Y,Nd)
 
2
(CO
 
3
)
 
4
· 6H
 
2
O
System:OrthorhombicColour:pale purple, light pink, ...
Hardness:
Member of:Tengerite Group
Name:
For professor Kenjiro Kimura (1896-1988), Tokyo University.
This page provides mineralogical data about Kimuraite-(Y).

Classification of Kimuraite-(Y)

IMA status:Approved 1984
Strunz 8th edition ID:5/D.03-50
Nickel-Strunz 10th (pending) edition ID:5.CC.15

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
Dana 8th edition ID:15.4.5.1

15 : HYDRATED NORMAL CARBONATES
4 : AmBn(XO3)p·xH2O, with (m+n):p < 1:1
Hey's CIM Ref.:11.8.10

11 : Carbonates
8 : Carbonates of the rare earths
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Type Occurrence of Kimuraite-(Y)

Type Locality:Kirigo, Hizen-cho, Karatsu City (Higashi-Matsuura-gun), Saga Prefecture, Kyushu Region, Japan
Place of Conservation of Type Material:Smithsonian
Geological Setting of type material:Fissues in alkali olivine basalt

Physical Properties of Kimuraite-(Y)

Lustre:Vitreous, Silky
Diaphaneity (Transparency):Translucent
Comment:Silky on cleavages
Colour:pale purple, light pink, white
Streak:white
Hardness (Mohs):
Cleavage:Perfect
on {010}
Density (measured):2.6(1) g/cm3
Density (calculated):2.98 g/cm3

Crystallography of Kimuraite-(Y)

Crystal System:Orthorhombic
Cell Parameters:a = 9.2545(8) Å, b = 23.976(4) Å, c = 6.0433(7) Å
Ratio:a:b:c = 0.386 : 1 : 0.252
Unit Cell Volume:V 1,340.92 ų (Calculated from Unit Cell)
Z:4
Morphology:Spherulitic aggregates of scaly tabular crystals.

Optical Data of Kimuraite-(Y)

Type:Biaxial (-)
RI values: nα = 1.584(2) nβ = 1.612(2) nγ = 1.626(2)
2V:Measured: 70° (5), Calculated: 68°
Maximum Birefringence:δ = 0.042

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

Chemical Properties of Kimuraite-(Y)

Formula:
Ca(Y,Nd)
 
2
(CO
 
3
)
 
4
· 6H
 
2
O
Essential elements:C, Ca, H, O, Y
All elements listed in formula:C, Ca, H, Nd, O, Y

Relationship of Kimuraite-(Y) to other Species

Member of:Tengerite Group
Other Members of Group:

- +
Hizenite-(Y)
Ca
 
2
Y
 
6
(CO
 
3
)
 
11
· 14H
 
2
O
Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
(CO
 
3
)
 
7
· 9H
 
2
O
Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
· 2-3H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
5.CC.05Donnayite-(Y)
NaCaSr
 
3
Y(CO
 
3
)
 
6
· 3H
 
2
O
5.CC.05Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
5.CC.05Mckelveyite-(Nd)
(Ba,Sr)(Nd,Ce,La)(CO
 
3
)
 
2
· 4-10H
 
2
O
5.CC.05Mckelveyite-(Y)
NaCaBa
 
3
Y(CO
 
3
)
 
6
· 3H
 
2
O
5.CC.05Weloganite
Na
 
2
Sr
 
3
Zr(CO
 
3
)
 
6
· 3H
 
2
O
5.CC.10Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
· 2-3H
 
2
O
5.CC.15Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
(CO
 
3
)
 
7
· 9H
 
2
O
5.CC.20Shomiokite-(Y)
Na
 
3
Y[CO
 
3
]
 
3
· 3H
 
2
O
5.CC.25Calkinsite-(Ce)
(Ce,La)
 
2
(CO
 
3
)
 
3
· 4H
 
2
O
5.CC.25Lanthanite-(Ce)
(Ce,La,Nd)
 
2
(CO
 
3
)
 
3
· 8H
 
2
O
5.CC.25Lanthanite-(La)
(La,Ce)
 
2
(CO
 
3
)
 
3
· 8H
 
2
O
5.CC.25Lanthanite-(Nd)
(Nd,La)
 
2
(CO
 
3
)
 
3
· 8H
 
2
O
5.CC.30Adamsite-(Y)
NaY[CO
 
3
]
 
2
· 6H
 
2
O
5.CC.35Decrespignyite-(Y)
Cu(Y,REE)
 
4
(CO
 
3
)
 
4
(OH)
 
5
Cl · 2H
 
2
O
5.CC.40Galgenbergite-(Ce)
Ca(Ce,La,Nd)
 
2
(CO
 
3
)
 
4
· H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.8.1Calkinsite-(Ce)
(Ce,La)
 
2
(CO
 
3
)
 
3
· 4H
 
2
O
11.8.2Lanthanite-(La)
(La,Ce)
 
2
(CO
 
3
)
 
3
· 8H
 
2
O
11.8.3Lanthanite-(Ce)
(Ce,La,Nd)
 
2
(CO
 
3
)
 
3
· 8H
 
2
O
11.8.4Lanthanite-(Nd)
(Nd,La)
 
2
(CO
 
3
)
 
3
· 8H
 
2
O
11.8.5Hydroxylbastnäsite-(Ce)
(Ce,La)(CO
 
3
)(OH,F)
11.8.6Hydroxylbastnäsite-(Nd)
(Nd,Ce,La)(CO
 
3
)(OH,F)
11.8.7Hydroxylbastnäsite-(La)
(La,Nd,Ce)(CO
 
3
)(OH,F)
11.8.8Rémondite-(Ce)
Na
 
3
(Ce,La,Ca,Na,Sr)
 
3
(CO
 
3
)
 
5
11.8.9Tengerite-(Y)
Y
 
2
[CO
 
3
]
 
3
· 2-3H
 
2
O
11.8.11Lokkaite-(Y)
Ca(Y,Gd,Nd,Dy)
 
4
(CO
 
3
)
 
7
· 9H
 
2
O
11.8.12Calcioancylite-(Nd)
Ca(Nd,La,Ce)(CO
 
3
)
 
2
(OH)
 
.
H
 
2
O
11.8.13Calcioancylite-(Ce)
(Ca,Sr)Ce(CO
 
3
)
 
2
(OH) · H
 
2
O
11.8.14Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
11.8.15Khanneshite
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5
11.8.16Donnayite-(Y)
NaCaSr
 
3
Y(CO
 
3
)
 
6
· 3H
 
2
O
11.8.17Carbocernaite
(Ca,Na)(Sr,Ce,Ba)(CO
 
3
)
 
2
11.8.18Ancylite-(Ce)
SrCe(CO
 
3
)
 
2
(OH) · H
 
2
O
11.8.19Ewaldite
Ba(Ca,Y,Na,K)(CO
 
3
)
 
2
11.8.20Mckelveyite-(Y)
NaCaBa
 
3
Y(CO
 
3
)
 
6
· 3H
 
2
O
11.8.21Sahamalite-(Ce)
(Mg,Fe)(Ce,La,Nd)
 
2
(CO
 
3
)
 
4

Other Names for Kimuraite-(Y)

Synonyms:
IMA1984-073
Other Languages:
German:Kimurait-(Y)
Japanese:木村石

Other Information

Fluorescence in UV light:Bright reddish purple to purple under SW and LW
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 Kimuraite-(Y)

Reference List:

- +
American Mineralogist (1986): 71: 1028-1033.

Internet Links for Kimuraite-(Y)

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  • Raman and XRD data at RRUFF project
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  • Kimuraite-(Y) details from Handbook of Mineralogy (PDF)
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  • Localities for Kimuraite-(Y)

    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.
    (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.
    Japan
     
    • Kyushu Region
      • Saga Prefecture
        • Karatsu City (Higashi-Matsuura-gun)
          • Hizen-cho
    American Mineralogist: 71(7-8): 1028-1033.
    American Mineralogist, (2000) 85, 1076–1081
    Russia
     
    • Far-Eastern Region
      • Primorskiy Kray
        • Khanka Lake
    V.V. Seredin data
    Sweden
     
    • Uppland
      • Vaxholm
        • Resarö
    No reference listed
    • Värmland
      • Filipstad
        • Persberg district
    P.M. Kartashov data
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 11th Apr 2013 00:50:17
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