Mineralogy Database

Kimuraite-(Y) Mineral Data

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General Kimuraite-(Y) Information

Help on Chemical  Formula: Chemical Formula: CaY2(CO3)4•6(H2O)
Help on Composition: Composition: Molecular Weight = 566.02 gm
   Calcium    7.08 %  Ca    9.91 % CaO
   Yttrium   31.41 %  Y    39.89 % Y2O3
   Hydrogen   2.14 %  H    19.10 % H2O
   Carbon     8.49 %  C    31.10 % CO2
   Oxygen    50.88 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaY2(CO3)4•6(H2O)
Help on Environment: Environment: Secondary mineral found in alkali olivine basalt.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Kirigo, Hizen, Higashi, Matsuura, Saga Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Kenjiro Kimura (1896-), Geochemist, University of Japan.
Help on Name Pronunciation: Name Pronunciation: Kimuraite-(Y) + Pronunciation Say KIMURAITE-(Y)

Kimuraite-(Y) Image

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Comments: Tiny white kimuraite-(Y) crystals in fissures in basalt.
Location: Kirigo, Hizen-Cho, Higashi, Matsuura-Gun, Saga Pref., Japan. Scale: Picture size 2cm.
© Diederik Visser

Kimuraite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3857:1:0.2518
Help on Cell Dimensions: Cell Dimensions: a = 9.25, b = 23.98, c = 6.04, Z = 4; V = 1,339.76 Den(Calc)= 2.81
Help on Crystal System: Crystal System: Orthorhombic Space Group: Imm2,I mmm,I 222,I 212121
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 12.06(1), 6.02(0.4), 3.76(0.3),

Physical Properties of Kimuraite-(Y)

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: White, Light purple pink, Light pink.
Help on Density: Density: 2.6
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=reddish purple, Long UV=purple.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white

Optical Properties of Kimuraite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.066 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2161,KPDmeas= 0.2336,KC= 0.2192
Ncalc = 1.57 - 1.62
Help on Optical Data: Optical Data: Biaxial (-), a=1.584, b=1.612, g=1.626, bire=0.0420, 2V(Calc)=68, 2V(Meas)=70.

Calculated Properties of Kimuraite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.76 gm/cc
note: Specific Gravity of Kimuraite-(Y) =2.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0012767053
Boson Index = 0.9987232947
Help on Photoelectric: Photoelectric: PEKimuraite-(Y) = 38.59 barns/electron
U=PEKimuraite-(Y) x rElectron Density= 106.53 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kimuraite-(Y) is Not Radioactive

Kimuraite-(Y) Classification

Help on  Dana Class: Dana Class: (15)Hydrated Carbonates
  (15.04)Dana Type
  (15.04.05)Dana Group Kimuraite-(Y) CaY2(CO3)4•6(H2O) Imm2,I mmm,I 222,I 212121 Ortho
Help on  Strunz Class: Strunz Class: 05.CC.50 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CC -With rare-earth elements (REE)
05.CC.50 Kimuraite-(Y) CaY2(CO3)4•6(H2O) Imm2,I mmm,I 222,I 212121 Ortho

Other Kimuraite-(Y) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.71,p1028-1033,1986)
Help on See Also: See Also: Links to other databases for Kimuraite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 05.CC.50





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