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Kimuraite-(Y)

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Professor Kenjiro Kimura (1896-1988)
Formula:
Ca(Y,Nd)2(CO3)4 · 6H2O
System:
Orthorhombic
Colour:
pale purple, light pink, ...
Hardness:
Member of:
Name:
For professor Kenjiro Kimura (1896-1988), Tokyo University.
This page provides mineralogical data about Kimuraite-(Y).

Classification of Kimuraite-(Y)

Approved 1984
5.CC.15

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

15 : HYDRATED NORMAL CARBONATES
4 : AmBn(XO3)p·xH2O, with (m+n):p < 1:1
11.8.10

11 : Carbonates
8 : Carbonates of the rare earths
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http://www.mindat.org/min-2208.html
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Type Occurrence of Kimuraite-(Y)

Place of Conservation of Type Material:
Smithsonian
Geological Setting of Type Material:
Fissues in alkali olivine basalt

Physical Properties of Kimuraite-(Y)

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

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°
Max Birefringence:
δ = 0.042
Image 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(CO3)4 · 6H2O
Essential elements:
All elements listed in formula:

Relationship of Kimuraite-(Y) to other Species

Member of:
Other Members of Group:
Hizenite-(Y)Ca2Y6(CO3)11 · 14H2O
Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
Tengerite-(Y)Y2(CO3)3 · 2-3H2O
5.CC.05Donnayite-(Y)NaCaSr3Y(CO3)6 · 3H2O
5.CC.05EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
5.CC.05Mckelveyite-(Nd)(Ba,Sr)(Nd,Ce,La)(CO3)2 · 4-10H2O
5.CC.05Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2O
5.CC.05WeloganiteNa2Sr3Zr(CO3)6 · 3H2O
5.CC.10Tengerite-(Y)Y2(CO3)3 · 2-3H2O
5.CC.15Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
5.CC.20Shomiokite-(Y)Na3Y[CO3]3 · 3H2O
5.CC.25Calkinsite-(Ce)(Ce,La)2(CO3)3 · 4H2O
5.CC.25Lanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
5.CC.25Lanthanite-(La)(La,Ce)2(CO3)3 · 8H2O
5.CC.25Lanthanite-(Nd)(Nd,La)2(CO3)3 · 8H2O
5.CC.30Adamsite-(Y)NaY[CO3]2 · 6H2O
5.CC.35Decrespignyite-(Y)Cu(Y,REE)4(CO3)4(OH)5Cl · 2H2O
5.CC.40Galgenbergite-(Ce)Ca(Ce,La,Nd)2(CO3)4 · H2O
11.8.1Calkinsite-(Ce)(Ce,La)2(CO3)3 · 4H2O
11.8.2Lanthanite-(La)(La,Ce)2(CO3)3 · 8H2O
11.8.3Lanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
11.8.4Lanthanite-(Nd)(Nd,La)2(CO3)3 · 8H2O
11.8.5Hydroxylbastnäsite-(Ce)(Ce,La)(CO3)(OH,F)
11.8.6Hydroxylbastnäsite-(Nd)(Nd,Ce,La)(CO3)(OH,F)
11.8.7Hydroxylbastnäsite-(La)(La,Nd,Ce)(CO3)(OH,F)
11.8.8Rémondite-(Ce)Na3(Ce,La,Ca,Na,Sr)3(CO3)5
11.8.9Tengerite-(Y)Y2(CO3)3 · 2-3H2O
11.8.11Lokkaite-(Y)Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O
11.8.12Calcioancylite-(Nd)Ca(Nd,La,Ce)(CO3)2(OH).H2O
11.8.13Calcioancylite-(Ce)(Ca,Sr)Ce(CO3)2(OH) · H2O
11.8.14Burbankite(Na,Ca)3(Sr,Ba,Ce)3(CO3)5
11.8.15Khanneshite(Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5
11.8.16Donnayite-(Y)NaCaSr3Y(CO3)6 · 3H2O
11.8.17Carbocernaite(Ca,Na)(Sr,Ce,Ba)(CO3)2
11.8.18Ancylite-(Ce)SrCe(CO3)2(OH) · H2O
11.8.19EwalditeBa(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
11.8.20Mckelveyite-(Y)NaCaBa3Y(CO3)6 · 3H2O
11.8.21Sahamalite-(Ce)(Mg,Fe)(Ce,La,Nd)2(CO3)4

Other Names for Kimuraite-(Y)

Name in Other Languages:
Japanese:木村石
Traditional Chinese:水碳釔鈣石
水碳鈣釔石

Other Information

Bright reddish purple to purple under SW and LW
Health Risks:
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)

Localities for Kimuraite-(Y)

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Canada
 
  • Québec
    • Montérégie
      • Lajemmerais RCM
        • Varennes & St-Amable
          • Saint-Amable sill
R. Tibbit, Horváth & Can. Museum of Nature collections - XRD & EDS
Chile
 
  • Tarapacá Region
    • El Tamarugal Province
      • Pampa del Tamarugal
Gunnar Farber
Japan (TL)
 
  • Kyushu Region
    • Saga Prefecture
      • Karatsu City (Higashi-Matsuura-gun)
        • Hizen-cho
American Mineralogist: 71(7-8): 1028-1033.
Miyawaki R, Matsubara S, Yokoyama K, Iwano S, Hamasaki K, Yukinori I (2003) Kozoite-(La), La(CO3)(OH), a new mineral from Mitsukoshi, Hizen-cho, Saga Prefecture, Japan. Journal of Mineralogical and Petrological Sciences 98, 137-141
Miyawaki, R., Matsubara, S., Yokoyama, K., Takeuchi, K., Terada, Y., & Nakai, I. (2000). Kozoite-(Nd), Nd (CO3)(OH), a new mineral in an alkali olivine basalt from Hizen-cho, Saga Prefecture, Japan. American Mineralogist, 85(7-8), 1076-1081.
Russia
 
  • Far-Eastern Region
    • Primorskiy Kray
      • Khanka Lake
V.V. Seredin data
Sweden
 
  • Dalarna
    • Borlänge
      • St Tuna
Mikael Janssons Collection; Verified by Veryfied: By XRD and SEM-EDS, 2014, The Swedish Museum of Natural History.
  • Uppland
    • Vaxholm
      • Resarö
No reference listed
  • Värmland
    • Filipstad
      • Persberg district
P.M. Kartashov data
Mineral and/or Locality  
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